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authorKartik Agaram <vc@akkartik.com>2019-10-26 23:51:14 -0700
committerKartik Agaram <vc@akkartik.com>2019-10-26 23:51:14 -0700
commit999c529cb972079df3bc693945be34a77336ddf4 (patch)
tree866ef92e03a5206ec95c75996788d9f4ae207981 /html/061read-byte.subx.html
parent0fba3393a5becfb38dea19464e02dc17a64b7574 (diff)
downloadmu-999c529cb972079df3bc693945be34a77336ddf4.tar.gz
5716
Diffstat (limited to 'html/061read-byte.subx.html')
-rw-r--r--html/061read-byte.subx.html522
1 files changed, 259 insertions, 263 deletions
diff --git a/html/061read-byte.subx.html b/html/061read-byte.subx.html
index 262ac137..6b6603bc 100644
--- a/html/061read-byte.subx.html
+++ b/html/061read-byte.subx.html
@@ -72,99 +72,99 @@ if ('onhashchange' in window) {
 <span id="L10" class="LineNr"> 10 </span>== data
 <span id="L11" class="LineNr"> 11 </span>
 <span id="L12" class="LineNr"> 12 </span><span class="subxComment"># The buffered file for standard input. Also illustrates the layout for</span>
-<span id="L13" class="LineNr"> 13 </span><span class="subxComment"># buffered-file.</span>
+<span id="L13" class="LineNr"> 13 </span><span class="subxComment"># buffered-file: a pointer to the backing store, followed by a 'buffer' stream</span>
 <span id="L14" class="LineNr"> 14 </span><span class="SpecialChar">Stdin</span>:
 <span id="L15" class="LineNr"> 15 </span>    <span class="subxComment"># file descriptor or (address stream)</span>
 <span id="L16" class="LineNr"> 16 </span>    0/imm32  <span class="subxComment"># standard input</span>
-<span id="L17" class="LineNr"> 17 </span>    <span class="subxComment"># current write index</span>
-<span id="L18" class="LineNr"> 18 </span>    0/imm32
-<span id="L19" class="LineNr"> 19 </span>    <span class="subxComment"># current read index</span>
+<span id="L17" class="LineNr"> 17 </span>Stdin-&gt;buffer:
+<span id="L18" class="LineNr"> 18 </span>    <span class="subxComment"># inlined fields for a stream</span>
+<span id="L19" class="LineNr"> 19 </span>    <span class="subxComment">#   current write index</span>
 <span id="L20" class="LineNr"> 20 </span>    0/imm32
-<span id="L21" class="LineNr"> 21 </span>    <span class="subxComment"># length</span>
-<span id="L22" class="LineNr"> 22 </span>    8/imm32
-<span id="L23" class="LineNr"> 23 </span>    <span class="subxComment"># data</span>
-<span id="L24" class="LineNr"> 24 </span>    00 00 00 00 00 00 00 00  <span class="subxComment"># 8 bytes</span>
-<span id="L25" class="LineNr"> 25 </span>
-<span id="L26" class="LineNr"> 26 </span><span class="subxComment"># TODO: 8 bytes is too small. We'll need to grow the buffer for efficiency. But</span>
-<span id="L27" class="LineNr"> 27 </span><span class="subxComment"># I don't want to type in 1024 bytes here.</span>
-<span id="L28" class="LineNr"> 28 </span>
-<span id="L29" class="LineNr"> 29 </span>== code
-<span id="L30" class="LineNr"> 30 </span><span class="subxComment">#   instruction                     effective address                                                   register    displacement    immediate</span>
-<span id="L31" class="LineNr"> 31 </span><span class="subxS1Comment"># . op          subop               mod             rm32          base        index         scale       r32</span>
-<span id="L32" class="LineNr"> 32 </span><span class="subxS1Comment"># . 1-3 bytes   3 bits              2 bits          3 bits        3 bits      3 bits        2 bits      2 bits      0/1/2/4 bytes   0/1/2/4 bytes</span>
-<span id="L33" class="LineNr"> 33 </span>
-<span id="L34" class="LineNr"> 34 </span><span class="subxComment"># return next byte value in eax, with top 3 bytes cleared.</span>
-<span id="L35" class="LineNr"> 35 </span><span class="subxComment"># On reaching end of file, return 0xffffffff (Eof).</span>
-<span id="L36" class="LineNr"> 36 </span><span class="subxFunction">read-byte-buffered</span>:  <span class="subxComment"># f : (address buffered-file) -&gt; byte-or-Eof/eax</span>
-<span id="L37" class="LineNr"> 37 </span>    <span class="subxS1Comment"># . prologue</span>
-<span id="L38" class="LineNr"> 38 </span>    55/push-ebp
-<span id="L39" class="LineNr"> 39 </span>    89/copy                         3/mod/direct    5/rm32/ebp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          4/r32/esp  <span class="Normal"> . </span>             <span class="Normal"> . </span>                <span class="subxComment"># copy esp to ebp</span>
-<span id="L40" class="LineNr"> 40 </span>    <span class="subxS1Comment"># . save registers</span>
-<span id="L41" class="LineNr"> 41 </span>    51/push-ecx
-<span id="L42" class="LineNr"> 42 </span>    56/push-esi
-<span id="L43" class="LineNr"> 43 </span>    <span class="subxComment"># esi = f</span>
-<span id="L44" class="LineNr"> 44 </span>    8b/copy                         1/mod/*+disp8   5/rm32/ebp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          6/r32/esi   8/disp8        <span class="Normal"> . </span>                <span class="subxComment"># copy *(ebp+8) to esi</span>
-<span id="L45" class="LineNr"> 45 </span>    <span class="subxComment"># ecx = f-&gt;read</span>
-<span id="L46" class="LineNr"> 46 </span>    8b/copy                         1/mod/*+disp8   6/rm32/esi   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          1/r32/ecx   8/disp8        <span class="Normal"> . </span>                <span class="subxComment"># copy *(esi+8) to ecx</span>
-<span id="L47" class="LineNr"> 47 </span>    <span class="subxComment"># if (f-&gt;read &gt;= f-&gt;write) populate stream from file</span>
-<span id="L48" class="LineNr"> 48 </span>    3b/compare                      1/mod/*+disp8   6/rm32/esi   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          1/r32/ecx   4/disp8        <span class="Normal"> . </span>                <span class="subxComment"># compare ecx with *(esi+4)</span>
-<span id="L49" class="LineNr"> 49 </span>    7c/jump-if-lesser  $read-byte-buffered:from-stream/disp8
-<span id="L50" class="LineNr"> 50 </span>    <span class="subxS1Comment"># . clear-stream(stream = f+4)</span>
-<span id="L51" class="LineNr"> 51 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L52" class="LineNr"> 52 </span>    8d/copy-address                 1/mod/*+disp8   6/rm32/esi   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          0/r32/eax   4/disp8        <span class="Normal"> . </span>                <span class="subxComment"># copy esi+4 to eax</span>
-<span id="L53" class="LineNr"> 53 </span>    50/push-eax
-<span id="L54" class="LineNr"> 54 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L55" class="LineNr"> 55 </span>    e8/call  <a href='055stream.subx.html#L17'>clear-stream</a>/disp32
-<span id="L56" class="LineNr"> 56 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L57" class="LineNr"> 57 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
-<span id="L58" class="LineNr"> 58 </span>    <span class="subxS1Comment"># . f-&gt;read must now be 0; update its cache at ecx</span>
-<span id="L59" class="LineNr"> 59 </span>    31/xor                          3/mod/direct    1/rm32/ecx   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          1/r32/ecx  <span class="Normal"> . </span>             <span class="Normal"> . </span>                <span class="subxComment"># clear ecx</span>
-<span id="L60" class="LineNr"> 60 </span>    <span class="subxS1Comment"># . eax = read(f-&gt;fd, stream = f+4)</span>
-<span id="L61" class="LineNr"> 61 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L62" class="LineNr"> 62 </span>    50/push-eax
-<span id="L63" class="LineNr"> 63 </span>    ff          6/subop/push        0/mod/indirect  6/rm32/esi   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>             <span class="Normal"> . </span>                <span class="subxComment"># push *esi</span>
-<span id="L64" class="LineNr"> 64 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L65" class="LineNr"> 65 </span>    e8/call  <a href='060read.subx.html#L48'>read</a>/disp32
-<span id="L66" class="LineNr"> 66 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L67" class="LineNr"> 67 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              8/imm32           <span class="subxComment"># add to esp</span>
-<span id="L68" class="LineNr"> 68 </span>    <span class="subxComment"># if (eax == 0) return 0xffffffff</span>
-<span id="L69" class="LineNr"> 69 </span>    3d/compare-eax-and  0/imm32
-<span id="L70" class="LineNr"> 70 </span>    75/jump-if-not-equal  $read-byte-buffered:from-stream/disp8
-<span id="L71" class="LineNr"> 71 </span>    b8/copy-to-eax  0xffffffff/imm32/Eof
-<span id="L72" class="LineNr"> 72 </span>    eb/jump  $read-byte-buffered:end/disp8
-<span id="L73" class="LineNr"> 73 </span><span class="Constant">$read-byte-buffered:from-stream</span>:
-<span id="L74" class="LineNr"> 74 </span>    <span class="subxComment"># read byte from stream</span>
-<span id="L75" class="LineNr"> 75 </span>    <span class="subxComment"># AL = f-&gt;data[f-&gt;read]</span>
-<span id="L76" class="LineNr"> 76 </span>    31/xor                          3/mod/direct    0/rm32/eax   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          0/r32/eax  <span class="Normal"> . </span>             <span class="Normal"> . </span>                <span class="subxComment"># clear eax</span>
-<span id="L77" class="LineNr"> 77 </span>    8a/copy-byte                    1/mod/*+disp8   4/rm32/sib    6/base/esi  1/index/ecx  <span class="Normal"> . </span>          0/r32/AL    0x10/disp8     <span class="Normal"> . </span>                <span class="subxComment"># copy byte at *(esi+ecx+16) to AL</span>
-<span id="L78" class="LineNr"> 78 </span>    <span class="subxComment"># ++f-&gt;read</span>
-<span id="L79" class="LineNr"> 79 </span>    ff          0/subop/increment   1/mod/*+disp8   6/rm32/esi   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>          8/disp8        <span class="Normal"> . </span>                <span class="subxComment"># increment *(esi+8)</span>
-<span id="L80" class="LineNr"> 80 </span><span class="Constant">$read-byte-buffered:end</span>:
-<span id="L81" class="LineNr"> 81 </span>    <span class="subxS1Comment"># . restore registers</span>
-<span id="L82" class="LineNr"> 82 </span>    5e/pop-to-esi
-<span id="L83" class="LineNr"> 83 </span>    59/pop-to-ecx
-<span id="L84" class="LineNr"> 84 </span>    <span class="subxS1Comment"># . epilogue</span>
-<span id="L85" class="LineNr"> 85 </span>    89/copy                         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          5/r32/ebp  <span class="Normal"> . </span>             <span class="Normal"> . </span>                <span class="subxComment"># copy ebp to esp</span>
-<span id="L86" class="LineNr"> 86 </span>    5d/pop-to-ebp
-<span id="L87" class="LineNr"> 87 </span>    c3/return
-<span id="L88" class="LineNr"> 88 </span>
-<span id="L89" class="LineNr"> 89 </span><span class="subxH1Comment"># - tests</span>
+<span id="L21" class="LineNr"> 21 </span>    <span class="subxComment">#   current read index</span>
+<span id="L22" class="LineNr"> 22 </span>    0/imm32
+<span id="L23" class="LineNr"> 23 </span>    <span class="subxComment">#   length</span>
+<span id="L24" class="LineNr"> 24 </span>    8/imm32
+<span id="L25" class="LineNr"> 25 </span>    <span class="subxComment">#   data</span>
+<span id="L26" class="LineNr"> 26 </span>    00 00 00 00 00 00 00 00  <span class="subxComment"># 8 bytes</span>
+<span id="L27" class="LineNr"> 27 </span>
+<span id="L28" class="LineNr"> 28 </span><span class="subxComment"># TODO: 8 bytes is too small. We'll need to grow the buffer for efficiency. But</span>
+<span id="L29" class="LineNr"> 29 </span><span class="subxComment"># I don't want to type in 1024 bytes here.</span>
+<span id="L30" class="LineNr"> 30 </span>
+<span id="L31" class="LineNr"> 31 </span>== code
+<span id="L32" class="LineNr"> 32 </span><span class="subxComment">#   instruction                     effective address                                                   register    displacement    immediate</span>
+<span id="L33" class="LineNr"> 33 </span><span class="subxS1Comment"># . op          subop               mod             rm32          base        index         scale       r32</span>
+<span id="L34" class="LineNr"> 34 </span><span class="subxS1Comment"># . 1-3 bytes   3 bits              2 bits          3 bits        3 bits      3 bits        2 bits      2 bits      0/1/2/4 bytes   0/1/2/4 bytes</span>
+<span id="L35" class="LineNr"> 35 </span>
+<span id="L36" class="LineNr"> 36 </span><span class="subxComment"># return next byte value in eax, with top 3 bytes cleared.</span>
+<span id="L37" class="LineNr"> 37 </span><span class="subxComment"># On reaching end of file, return 0xffffffff (Eof).</span>
+<span id="L38" class="LineNr"> 38 </span><span class="subxFunction">read-byte-buffered</span>:  <span class="subxComment"># f : (address buffered-file) -&gt; byte-or-Eof/eax</span>
+<span id="L39" class="LineNr"> 39 </span>    <span class="subxS1Comment"># . prologue</span>
+<span id="L40" class="LineNr"> 40 </span>    55/push-ebp
+<span id="L41" class="LineNr"> 41 </span>    89/copy                         3/mod/direct    5/rm32/ebp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          4/r32/esp  <span class="Normal"> . </span>             <span class="Normal"> . </span>                <span class="subxComment"># copy esp to ebp</span>
+<span id="L42" class="LineNr"> 42 </span>    <span class="subxS1Comment"># . save registers</span>
+<span id="L43" class="LineNr"> 43 </span>    51/push-ecx
+<span id="L44" class="LineNr"> 44 </span>    56/push-esi
+<span id="L45" class="LineNr"> 45 </span>    <span class="subxComment"># esi = f</span>
+<span id="L46" class="LineNr"> 46 </span>    8b/copy                         1/mod/*+disp8   5/rm32/ebp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          6/r32/esi   8/disp8        <span class="Normal"> . </span>                <span class="subxComment"># copy *(ebp+8) to esi</span>
+<span id="L47" class="LineNr"> 47 </span>    <span class="subxComment"># ecx = f-&gt;read</span>
+<span id="L48" class="LineNr"> 48 </span>    8b/copy                         1/mod/*+disp8   6/rm32/esi   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          1/r32/ecx   8/disp8        <span class="Normal"> . </span>                <span class="subxComment"># copy *(esi+8) to ecx</span>
+<span id="L49" class="LineNr"> 49 </span>    <span class="subxComment"># if (f-&gt;read &gt;= f-&gt;write) populate stream from file</span>
+<span id="L50" class="LineNr"> 50 </span>    3b/compare                      1/mod/*+disp8   6/rm32/esi   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          1/r32/ecx   4/disp8        <span class="Normal"> . </span>                <span class="subxComment"># compare ecx with *(esi+4)</span>
+<span id="L51" class="LineNr"> 51 </span>    7c/jump-if-lesser  $read-byte-buffered:from-stream/disp8
+<span id="L52" class="LineNr"> 52 </span>    <span class="subxS1Comment"># . clear-stream(stream = f+4)</span>
+<span id="L53" class="LineNr"> 53 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L54" class="LineNr"> 54 </span>    8d/copy-address                 1/mod/*+disp8   6/rm32/esi   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          0/r32/eax   4/disp8        <span class="Normal"> . </span>                <span class="subxComment"># copy esi+4 to eax</span>
+<span id="L55" class="LineNr"> 55 </span>    50/push-eax
+<span id="L56" class="LineNr"> 56 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L57" class="LineNr"> 57 </span>    e8/call  <a href='055stream.subx.html#L17'>clear-stream</a>/disp32
+<span id="L58" class="LineNr"> 58 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L59" class="LineNr"> 59 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
+<span id="L60" class="LineNr"> 60 </span>    <span class="subxS1Comment"># . f-&gt;read must now be 0; update its cache at ecx</span>
+<span id="L61" class="LineNr"> 61 </span>    31/xor                          3/mod/direct    1/rm32/ecx   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          1/r32/ecx  <span class="Normal"> . </span>             <span class="Normal"> . </span>                <span class="subxComment"># clear ecx</span>
+<span id="L62" class="LineNr"> 62 </span>    <span class="subxS1Comment"># . eax = read(f-&gt;fd, stream = f+4)</span>
+<span id="L63" class="LineNr"> 63 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L64" class="LineNr"> 64 </span>    50/push-eax
+<span id="L65" class="LineNr"> 65 </span>    ff          6/subop/push        0/mod/indirect  6/rm32/esi   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>             <span class="Normal"> . </span>                <span class="subxComment"># push *esi</span>
+<span id="L66" class="LineNr"> 66 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L67" class="LineNr"> 67 </span>    e8/call  <a href='060read.subx.html#L48'>read</a>/disp32
+<span id="L68" class="LineNr"> 68 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L69" class="LineNr"> 69 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              8/imm32           <span class="subxComment"># add to esp</span>
+<span id="L70" class="LineNr"> 70 </span>    <span class="subxComment"># if (eax == 0) return 0xffffffff</span>
+<span id="L71" class="LineNr"> 71 </span>    3d/compare-eax-and  0/imm32
+<span id="L72" class="LineNr"> 72 </span>    75/jump-if-not-equal  $read-byte-buffered:from-stream/disp8
+<span id="L73" class="LineNr"> 73 </span>    b8/copy-to-eax  0xffffffff/imm32/Eof
+<span id="L74" class="LineNr"> 74 </span>    eb/jump  $read-byte-buffered:end/disp8
+<span id="L75" class="LineNr"> 75 </span><span class="Constant">$read-byte-buffered:from-stream</span>:
+<span id="L76" class="LineNr"> 76 </span>    <span class="subxComment"># read byte from stream</span>
+<span id="L77" class="LineNr"> 77 </span>    <span class="subxComment"># AL = f-&gt;data[f-&gt;read]</span>
+<span id="L78" class="LineNr"> 78 </span>    31/xor                          3/mod/direct    0/rm32/eax   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          0/r32/eax  <span class="Normal"> . </span>             <span class="Normal"> . </span>                <span class="subxComment"># clear eax</span>
+<span id="L79" class="LineNr"> 79 </span>    8a/copy-byte                    1/mod/*+disp8   4/rm32/sib    6/base/esi  1/index/ecx  <span class="Normal"> . </span>          0/r32/AL    0x10/disp8     <span class="Normal"> . </span>                <span class="subxComment"># copy byte at *(esi+ecx+16) to AL</span>
+<span id="L80" class="LineNr"> 80 </span>    <span class="subxComment"># ++f-&gt;read</span>
+<span id="L81" class="LineNr"> 81 </span>    ff          0/subop/increment   1/mod/*+disp8   6/rm32/esi   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>          8/disp8        <span class="Normal"> . </span>                <span class="subxComment"># increment *(esi+8)</span>
+<span id="L82" class="LineNr"> 82 </span><span class="Constant">$read-byte-buffered:end</span>:
+<span id="L83" class="LineNr"> 83 </span>    <span class="subxS1Comment"># . restore registers</span>
+<span id="L84" class="LineNr"> 84 </span>    5e/pop-to-esi
+<span id="L85" class="LineNr"> 85 </span>    59/pop-to-ecx
+<span id="L86" class="LineNr"> 86 </span>    <span class="subxS1Comment"># . epilogue</span>
+<span id="L87" class="LineNr"> 87 </span>    89/copy                         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          5/r32/ebp  <span class="Normal"> . </span>             <span class="Normal"> . </span>                <span class="subxComment"># copy ebp to esp</span>
+<span id="L88" class="LineNr"> 88 </span>    5d/pop-to-ebp
+<span id="L89" class="LineNr"> 89 </span>    c3/return
 <span id="L90" class="LineNr"> 90 </span>
-<span id="L91" class="LineNr"> 91 </span><span class="subxTest">test-read-byte-buffered-single</span>:
-<span id="L92" class="LineNr"> 92 </span>    <span class="subxH1Comment"># - check that read-byte-buffered returns first byte of 'file'</span>
-<span id="L93" class="LineNr"> 93 </span>    <span class="subxComment"># setup</span>
-<span id="L94" class="LineNr"> 94 </span>    <span class="subxS1Comment"># . clear-stream(_test-stream)</span>
-<span id="L95" class="LineNr"> 95 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L96" class="LineNr"> 96 </span>    68/push  <a href='057write.subx.html#L148'>_test-stream</a>/imm32
-<span id="L97" class="LineNr"> 97 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L98" class="LineNr"> 98 </span>    e8/call  <a href='055stream.subx.html#L17'>clear-stream</a>/disp32
-<span id="L99" class="LineNr"> 99 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L100" class="LineNr">100 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
-<span id="L101" class="LineNr">101 </span>    <span class="subxS1Comment"># . clear-stream(_test-buffered-file+4)</span>
-<span id="L102" class="LineNr">102 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L103" class="LineNr">103 </span>    b8/copy-to-eax  <a href='061read-byte.subx.html#L281'>_test-buffered-file</a>/imm32
-<span id="L104" class="LineNr">104 </span>    05/add-to-eax  4/imm32
-<span id="L105" class="LineNr">105 </span>    50/push-eax
+<span id="L91" class="LineNr"> 91 </span><span class="subxH1Comment"># - tests</span>
+<span id="L92" class="LineNr"> 92 </span>
+<span id="L93" class="LineNr"> 93 </span><span class="subxTest">test-read-byte-buffered-single</span>:
+<span id="L94" class="LineNr"> 94 </span>    <span class="subxH1Comment"># - check that read-byte-buffered returns first byte of 'file'</span>
+<span id="L95" class="LineNr"> 95 </span>    <span class="subxComment"># setup</span>
+<span id="L96" class="LineNr"> 96 </span>    <span class="subxS1Comment"># . clear-stream(_test-stream)</span>
+<span id="L97" class="LineNr"> 97 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L98" class="LineNr"> 98 </span>    68/push  <a href='057write.subx.html#L148'>_test-stream</a>/imm32
+<span id="L99" class="LineNr"> 99 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L100" class="LineNr">100 </span>    e8/call  <a href='055stream.subx.html#L17'>clear-stream</a>/disp32
+<span id="L101" class="LineNr">101 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L102" class="LineNr">102 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
+<span id="L103" class="LineNr">103 </span>    <span class="subxS1Comment"># . clear-stream(_test-buffered-file-&gt;buffer)</span>
+<span id="L104" class="LineNr">104 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L105" class="LineNr">105 </span>    68/push  <a href='061read-byte.subx.html#L278'>_test-buffered-file-&gt;buffer</a>/imm32
 <span id="L106" class="LineNr">106 </span>    <span class="subxS2Comment"># . . call</span>
 <span id="L107" class="LineNr">107 </span>    e8/call  <a href='055stream.subx.html#L17'>clear-stream</a>/disp32
 <span id="L108" class="LineNr">108 </span>    <span class="subxS2Comment"># . . discard args</span>
@@ -179,9 +179,9 @@ if ('onhashchange' in window) {
 <span id="L117" class="LineNr">117 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              8/imm32           <span class="subxComment"># add to esp</span>
 <span id="L118" class="LineNr">118 </span>    <span class="subxComment"># read-byte-buffered(_test-buffered-file)</span>
 <span id="L119" class="LineNr">119 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L120" class="LineNr">120 </span>    68/push  <a href='061read-byte.subx.html#L281'>_test-buffered-file</a>/imm32
+<span id="L120" class="LineNr">120 </span>    68/push  <a href='061read-byte.subx.html#L275'>_test-buffered-file</a>/imm32
 <span id="L121" class="LineNr">121 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L122" class="LineNr">122 </span>    e8/call  <a href='061read-byte.subx.html#L36'>read-byte-buffered</a>/disp32
+<span id="L122" class="LineNr">122 </span>    e8/call  <a href='061read-byte.subx.html#L38'>read-byte-buffered</a>/disp32
 <span id="L123" class="LineNr">123 </span>    <span class="subxS2Comment"># . . discard args</span>
 <span id="L124" class="LineNr">124 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
 <span id="L125" class="LineNr">125 </span>    <span class="subxComment"># check-ints-equal(eax, 'A', msg)</span>
@@ -206,160 +206,160 @@ if ('onhashchange' in window) {
 <span id="L144" class="LineNr">144 </span>    e8/call  <a href='055stream.subx.html#L17'>clear-stream</a>/disp32
 <span id="L145" class="LineNr">145 </span>    <span class="subxS2Comment"># . . discard args</span>
 <span id="L146" class="LineNr">146 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
-<span id="L147" class="LineNr">147 </span>    <span class="subxS1Comment"># . clear-stream(_test-buffered-file+4)</span>
+<span id="L147" class="LineNr">147 </span>    <span class="subxS1Comment"># . clear-stream(_test-buffered-file-&gt;buffer)</span>
 <span id="L148" class="LineNr">148 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L149" class="LineNr">149 </span>    b8/copy-to-eax  <a href='061read-byte.subx.html#L281'>_test-buffered-file</a>/imm32
-<span id="L150" class="LineNr">150 </span>    05/add-to-eax  4/imm32
-<span id="L151" class="LineNr">151 </span>    50/push-eax
-<span id="L152" class="LineNr">152 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L153" class="LineNr">153 </span>    e8/call  <a href='055stream.subx.html#L17'>clear-stream</a>/disp32
-<span id="L154" class="LineNr">154 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L155" class="LineNr">155 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
-<span id="L156" class="LineNr">156 </span>    <span class="subxS1Comment"># . write(_test-stream, &quot;Ab&quot;)</span>
-<span id="L157" class="LineNr">157 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L158" class="LineNr">158 </span>    68/push  <span class="Constant">&quot;Ab&quot;</span>/imm32
-<span id="L159" class="LineNr">159 </span>    68/push  <a href='057write.subx.html#L148'>_test-stream</a>/imm32
-<span id="L160" class="LineNr">160 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L161" class="LineNr">161 </span>    e8/call  <a href='057write.subx.html#L24'>write</a>/disp32
-<span id="L162" class="LineNr">162 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L163" class="LineNr">163 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              8/imm32           <span class="subxComment"># add to esp</span>
-<span id="L164" class="LineNr">164 </span>    <span class="subxComment"># read-byte-buffered(_test-buffered-file)</span>
-<span id="L165" class="LineNr">165 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L166" class="LineNr">166 </span>    68/push  <a href='061read-byte.subx.html#L281'>_test-buffered-file</a>/imm32
-<span id="L167" class="LineNr">167 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L168" class="LineNr">168 </span>    e8/call  <a href='061read-byte.subx.html#L36'>read-byte-buffered</a>/disp32
-<span id="L169" class="LineNr">169 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L170" class="LineNr">170 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
-<span id="L171" class="LineNr">171 </span>    <span class="subxComment"># read-byte-buffered(_test-buffered-file)</span>
-<span id="L172" class="LineNr">172 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L173" class="LineNr">173 </span>    68/push  <a href='061read-byte.subx.html#L281'>_test-buffered-file</a>/imm32
-<span id="L174" class="LineNr">174 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L175" class="LineNr">175 </span>    e8/call  <a href='061read-byte.subx.html#L36'>read-byte-buffered</a>/disp32
-<span id="L176" class="LineNr">176 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L177" class="LineNr">177 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
-<span id="L178" class="LineNr">178 </span>    <span class="subxComment"># check-ints-equal(eax, 'b', msg)</span>
-<span id="L179" class="LineNr">179 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L180" class="LineNr">180 </span>    68/push  <span class="Constant">&quot;F - test-read-byte-buffered-multiple&quot;</span>/imm32
-<span id="L181" class="LineNr">181 </span>    68/push  0x62/imm32
-<span id="L182" class="LineNr">182 </span>    50/push-eax
-<span id="L183" class="LineNr">183 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L184" class="LineNr">184 </span>    e8/call  <a href='051test.subx.html#L24'>check-ints-equal</a>/disp32
-<span id="L185" class="LineNr">185 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L186" class="LineNr">186 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              0xc/imm32         <span class="subxComment"># add to esp</span>
-<span id="L187" class="LineNr">187 </span>    <span class="subxS1Comment"># . end</span>
-<span id="L188" class="LineNr">188 </span>    c3/return
-<span id="L189" class="LineNr">189 </span>
-<span id="L190" class="LineNr">190 </span><span class="subxTest">test-read-byte-buffered-end-of-file</span>:
-<span id="L191" class="LineNr">191 </span>    <span class="subxH1Comment"># - call read-byte-buffered on an empty 'file', check that it returns Eof</span>
-<span id="L192" class="LineNr">192 </span>    <span class="subxComment"># setup</span>
-<span id="L193" class="LineNr">193 </span>    <span class="subxS1Comment"># . clear-stream(_test-stream)</span>
-<span id="L194" class="LineNr">194 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L195" class="LineNr">195 </span>    68/push  <a href='057write.subx.html#L148'>_test-stream</a>/imm32
-<span id="L196" class="LineNr">196 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L197" class="LineNr">197 </span>    e8/call  <a href='055stream.subx.html#L17'>clear-stream</a>/disp32
-<span id="L198" class="LineNr">198 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L199" class="LineNr">199 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
-<span id="L200" class="LineNr">200 </span>    <span class="subxS1Comment"># . clear-stream(_test-buffered-file+4)</span>
-<span id="L201" class="LineNr">201 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L202" class="LineNr">202 </span>    b8/copy-to-eax  <a href='061read-byte.subx.html#L281'>_test-buffered-file</a>/imm32
-<span id="L203" class="LineNr">203 </span>    05/add-to-eax  4/imm32
-<span id="L204" class="LineNr">204 </span>    50/push-eax
-<span id="L205" class="LineNr">205 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L206" class="LineNr">206 </span>    e8/call  <a href='055stream.subx.html#L17'>clear-stream</a>/disp32
-<span id="L207" class="LineNr">207 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L208" class="LineNr">208 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
-<span id="L209" class="LineNr">209 </span>    <span class="subxComment"># read-byte-buffered(_test-buffered-file)</span>
-<span id="L210" class="LineNr">210 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L211" class="LineNr">211 </span>    68/push  <a href='061read-byte.subx.html#L281'>_test-buffered-file</a>/imm32
-<span id="L212" class="LineNr">212 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L213" class="LineNr">213 </span>    e8/call  <a href='061read-byte.subx.html#L36'>read-byte-buffered</a>/disp32
-<span id="L214" class="LineNr">214 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L215" class="LineNr">215 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
-<span id="L216" class="LineNr">216 </span>    <span class="subxComment"># check-ints-equal(eax, 0xffffffff, msg)</span>
-<span id="L217" class="LineNr">217 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L218" class="LineNr">218 </span>    68/push  <span class="Constant">&quot;F - test-read-byte-buffered-end-of-file&quot;</span>/imm32
-<span id="L219" class="LineNr">219 </span>    68/push  0xffffffff/imm32/Eof
-<span id="L220" class="LineNr">220 </span>    50/push-eax
-<span id="L221" class="LineNr">221 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L222" class="LineNr">222 </span>    e8/call  <a href='051test.subx.html#L24'>check-ints-equal</a>/disp32
-<span id="L223" class="LineNr">223 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L224" class="LineNr">224 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              0xc/imm32         <span class="subxComment"># add to esp</span>
-<span id="L225" class="LineNr">225 </span>    <span class="subxS1Comment"># . end</span>
-<span id="L226" class="LineNr">226 </span>    c3/return
-<span id="L227" class="LineNr">227 </span>
-<span id="L228" class="LineNr">228 </span><span class="subxTest">test-read-byte-buffered-refills-buffer</span>:
-<span id="L229" class="LineNr">229 </span>    <span class="subxH1Comment"># - consume buffered-file's buffer, check that next read-byte-buffered still works</span>
-<span id="L230" class="LineNr">230 </span>    <span class="subxComment"># setup</span>
-<span id="L231" class="LineNr">231 </span>    <span class="subxS1Comment"># . clear-stream(_test-stream)</span>
-<span id="L232" class="LineNr">232 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L233" class="LineNr">233 </span>    68/push  <a href='057write.subx.html#L148'>_test-stream</a>/imm32
-<span id="L234" class="LineNr">234 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L235" class="LineNr">235 </span>    e8/call  <a href='055stream.subx.html#L17'>clear-stream</a>/disp32
-<span id="L236" class="LineNr">236 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L237" class="LineNr">237 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
-<span id="L238" class="LineNr">238 </span>    <span class="subxS1Comment"># . clear-stream(_test-buffered-file+4)</span>
-<span id="L239" class="LineNr">239 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L240" class="LineNr">240 </span>    b8/copy-to-eax  <a href='061read-byte.subx.html#L281'>_test-buffered-file</a>/imm32
-<span id="L241" class="LineNr">241 </span>    05/add-to-eax  4/imm32
-<span id="L242" class="LineNr">242 </span>    50/push-eax
-<span id="L243" class="LineNr">243 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L244" class="LineNr">244 </span>    e8/call  <a href='055stream.subx.html#L17'>clear-stream</a>/disp32
-<span id="L245" class="LineNr">245 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L246" class="LineNr">246 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
-<span id="L247" class="LineNr">247 </span>    <span class="subxS1Comment"># . write(_test-stream, &quot;Abcdefgh&quot;)</span>
-<span id="L248" class="LineNr">248 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L249" class="LineNr">249 </span>    68/push  <span class="Constant">&quot;Abcdefgh&quot;</span>/imm32
-<span id="L250" class="LineNr">250 </span>    68/push  <a href='057write.subx.html#L148'>_test-stream</a>/imm32
-<span id="L251" class="LineNr">251 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L252" class="LineNr">252 </span>    e8/call  <a href='057write.subx.html#L24'>write</a>/disp32
-<span id="L253" class="LineNr">253 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L254" class="LineNr">254 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              8/imm32           <span class="subxComment"># add to esp</span>
-<span id="L255" class="LineNr">255 </span>    <span class="subxComment"># pretend buffer is full</span>
-<span id="L256" class="LineNr">256 </span>    <span class="subxS1Comment"># . _test-buffered-file-&gt;read = 6  # &gt;= _test-buffered-file-&gt;length</span>
-<span id="L257" class="LineNr">257 </span>    b8/copy-to-eax  <a href='061read-byte.subx.html#L281'>_test-buffered-file</a>/imm32
-<span id="L258" class="LineNr">258 </span>    c7          0/subop/copy        1/mod/*+disp8   0/rm32/eax   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>          8/disp8         6/imm32           <span class="subxComment"># copy to *(eax+8)</span>
-<span id="L259" class="LineNr">259 </span>    <span class="subxComment"># read-byte-buffered(_test-buffered-file)</span>
-<span id="L260" class="LineNr">260 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L261" class="LineNr">261 </span>    68/push  <a href='061read-byte.subx.html#L281'>_test-buffered-file</a>/imm32
-<span id="L262" class="LineNr">262 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L263" class="LineNr">263 </span>    e8/call  <a href='061read-byte.subx.html#L36'>read-byte-buffered</a>/disp32
-<span id="L264" class="LineNr">264 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L265" class="LineNr">265 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
-<span id="L266" class="LineNr">266 </span>    <span class="subxComment"># check-ints-equal(eax, 'A', msg)</span>
-<span id="L267" class="LineNr">267 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L268" class="LineNr">268 </span>    68/push  <span class="Constant">&quot;F - test-read-byte-buffered-refills-buffer&quot;</span>/imm32
-<span id="L269" class="LineNr">269 </span>    68/push  0x41/imm32
-<span id="L270" class="LineNr">270 </span>    50/push-eax
-<span id="L271" class="LineNr">271 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L272" class="LineNr">272 </span>    e8/call  <a href='051test.subx.html#L24'>check-ints-equal</a>/disp32
-<span id="L273" class="LineNr">273 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L274" class="LineNr">274 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              0xc/imm32         <span class="subxComment"># add to esp</span>
-<span id="L275" class="LineNr">275 </span>    <span class="subxS1Comment"># . end</span>
-<span id="L276" class="LineNr">276 </span>    c3/return
-<span id="L277" class="LineNr">277 </span>
-<span id="L278" class="LineNr">278 </span>== data
-<span id="L279" class="LineNr">279 </span>
-<span id="L280" class="LineNr">280 </span><span class="subxComment"># a test buffered file for _test-stream</span>
-<span id="L281" class="LineNr">281 </span><span class="subxMinorFunction">_test-buffered-file</span>:
-<span id="L282" class="LineNr">282 </span>    <span class="subxComment"># file descriptor or (address stream)</span>
-<span id="L283" class="LineNr">283 </span>    <a href='057write.subx.html#L148'>_test-stream</a>/imm32
-<span id="L284" class="LineNr">284 </span>    <span class="subxComment"># current write index</span>
-<span id="L285" class="LineNr">285 </span>    0/imm32
-<span id="L286" class="LineNr">286 </span>    <span class="subxComment"># current read index</span>
-<span id="L287" class="LineNr">287 </span>    0/imm32
-<span id="L288" class="LineNr">288 </span>    <span class="subxComment"># length</span>
-<span id="L289" class="LineNr">289 </span>    6/imm32
-<span id="L290" class="LineNr">290 </span>    <span class="subxComment"># data</span>
-<span id="L291" class="LineNr">291 </span>    00 00 00 00 00 00  <span class="subxComment"># 6 bytes</span>
-<span id="L292" class="LineNr">292 </span>
-<span id="L293" class="LineNr">293 </span><span class="subxMinorFunction">_test-input-stream</span>:
-<span id="L294" class="LineNr">294 </span>    <span class="subxComment"># current write index</span>
-<span id="L295" class="LineNr">295 </span>    0/imm32
-<span id="L296" class="LineNr">296 </span>    <span class="subxComment"># current read index</span>
-<span id="L297" class="LineNr">297 </span>    0/imm32
-<span id="L298" class="LineNr">298 </span>    <span class="subxComment"># length</span>
-<span id="L299" class="LineNr">299 </span>    0x100/imm32  <span class="subxComment"># 256 bytes</span>
-<span id="L300" class="LineNr">300 </span>    <span class="subxComment"># data (16 lines x 16 bytes/line)</span>
+<span id="L149" class="LineNr">149 </span>    68/push  <a href='061read-byte.subx.html#L278'>_test-buffered-file-&gt;buffer</a>/imm32
+<span id="L150" class="LineNr">150 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L151" class="LineNr">151 </span>    e8/call  <a href='055stream.subx.html#L17'>clear-stream</a>/disp32
+<span id="L152" class="LineNr">152 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L153" class="LineNr">153 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
+<span id="L154" class="LineNr">154 </span>    <span class="subxS1Comment"># . write(_test-stream, &quot;Ab&quot;)</span>
+<span id="L155" class="LineNr">155 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L156" class="LineNr">156 </span>    68/push  <span class="Constant">&quot;Ab&quot;</span>/imm32
+<span id="L157" class="LineNr">157 </span>    68/push  <a href='057write.subx.html#L148'>_test-stream</a>/imm32
+<span id="L158" class="LineNr">158 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L159" class="LineNr">159 </span>    e8/call  <a href='057write.subx.html#L24'>write</a>/disp32
+<span id="L160" class="LineNr">160 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L161" class="LineNr">161 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              8/imm32           <span class="subxComment"># add to esp</span>
+<span id="L162" class="LineNr">162 </span>    <span class="subxComment"># read-byte-buffered(_test-buffered-file)</span>
+<span id="L163" class="LineNr">163 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L164" class="LineNr">164 </span>    68/push  <a href='061read-byte.subx.html#L275'>_test-buffered-file</a>/imm32
+<span id="L165" class="LineNr">165 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L166" class="LineNr">166 </span>    e8/call  <a href='061read-byte.subx.html#L38'>read-byte-buffered</a>/disp32
+<span id="L167" class="LineNr">167 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L168" class="LineNr">168 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
+<span id="L169" class="LineNr">169 </span>    <span class="subxComment"># read-byte-buffered(_test-buffered-file)</span>
+<span id="L170" class="LineNr">170 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L171" class="LineNr">171 </span>    68/push  <a href='061read-byte.subx.html#L275'>_test-buffered-file</a>/imm32
+<span id="L172" class="LineNr">172 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L173" class="LineNr">173 </span>    e8/call  <a href='061read-byte.subx.html#L38'>read-byte-buffered</a>/disp32
+<span id="L174" class="LineNr">174 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L175" class="LineNr">175 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
+<span id="L176" class="LineNr">176 </span>    <span class="subxComment"># check-ints-equal(eax, 'b', msg)</span>
+<span id="L177" class="LineNr">177 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L178" class="LineNr">178 </span>    68/push  <span class="Constant">&quot;F - test-read-byte-buffered-multiple&quot;</span>/imm32
+<span id="L179" class="LineNr">179 </span>    68/push  0x62/imm32
+<span id="L180" class="LineNr">180 </span>    50/push-eax
+<span id="L181" class="LineNr">181 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L182" class="LineNr">182 </span>    e8/call  <a href='051test.subx.html#L24'>check-ints-equal</a>/disp32
+<span id="L183" class="LineNr">183 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L184" class="LineNr">184 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              0xc/imm32         <span class="subxComment"># add to esp</span>
+<span id="L185" class="LineNr">185 </span>    <span class="subxS1Comment"># . end</span>
+<span id="L186" class="LineNr">186 </span>    c3/return
+<span id="L187" class="LineNr">187 </span>
+<span id="L188" class="LineNr">188 </span><span class="subxTest">test-read-byte-buffered-end-of-file</span>:
+<span id="L189" class="LineNr">189 </span>    <span class="subxH1Comment"># - call read-byte-buffered on an empty 'file', check that it returns Eof</span>
+<span id="L190" class="LineNr">190 </span>    <span class="subxComment"># setup</span>
+<span id="L191" class="LineNr">191 </span>    <span class="subxS1Comment"># . clear-stream(_test-stream)</span>
+<span id="L192" class="LineNr">192 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L193" class="LineNr">193 </span>    68/push  <a href='057write.subx.html#L148'>_test-stream</a>/imm32
+<span id="L194" class="LineNr">194 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L195" class="LineNr">195 </span>    e8/call  <a href='055stream.subx.html#L17'>clear-stream</a>/disp32
+<span id="L196" class="LineNr">196 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L197" class="LineNr">197 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
+<span id="L198" class="LineNr">198 </span>    <span class="subxS1Comment"># . clear-stream(_test-buffered-file-&gt;buffer)</span>
+<span id="L199" class="LineNr">199 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L200" class="LineNr">200 </span>    68/push  <a href='061read-byte.subx.html#L278'>_test-buffered-file-&gt;buffer</a>/imm32
+<span id="L201" class="LineNr">201 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L202" class="LineNr">202 </span>    e8/call  <a href='055stream.subx.html#L17'>clear-stream</a>/disp32
+<span id="L203" class="LineNr">203 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L204" class="LineNr">204 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
+<span id="L205" class="LineNr">205 </span>    <span class="subxComment"># read-byte-buffered(_test-buffered-file)</span>
+<span id="L206" class="LineNr">206 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L207" class="LineNr">207 </span>    68/push  <a href='061read-byte.subx.html#L275'>_test-buffered-file</a>/imm32
+<span id="L208" class="LineNr">208 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L209" class="LineNr">209 </span>    e8/call  <a href='061read-byte.subx.html#L38'>read-byte-buffered</a>/disp32
+<span id="L210" class="LineNr">210 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L211" class="LineNr">211 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
+<span id="L212" class="LineNr">212 </span>    <span class="subxComment"># check-ints-equal(eax, 0xffffffff, msg)</span>
+<span id="L213" class="LineNr">213 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L214" class="LineNr">214 </span>    68/push  <span class="Constant">&quot;F - test-read-byte-buffered-end-of-file&quot;</span>/imm32
+<span id="L215" class="LineNr">215 </span>    68/push  0xffffffff/imm32/Eof
+<span id="L216" class="LineNr">216 </span>    50/push-eax
+<span id="L217" class="LineNr">217 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L218" class="LineNr">218 </span>    e8/call  <a href='051test.subx.html#L24'>check-ints-equal</a>/disp32
+<span id="L219" class="LineNr">219 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L220" class="LineNr">220 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              0xc/imm32         <span class="subxComment"># add to esp</span>
+<span id="L221" class="LineNr">221 </span>    <span class="subxS1Comment"># . end</span>
+<span id="L222" class="LineNr">222 </span>    c3/return
+<span id="L223" class="LineNr">223 </span>
+<span id="L224" class="LineNr">224 </span><span class="subxTest">test-read-byte-buffered-refills-buffer</span>:
+<span id="L225" class="LineNr">225 </span>    <span class="subxH1Comment"># - consume buffered-file's buffer, check that next read-byte-buffered still works</span>
+<span id="L226" class="LineNr">226 </span>    <span class="subxComment"># setup</span>
+<span id="L227" class="LineNr">227 </span>    <span class="subxS1Comment"># . clear-stream(_test-stream)</span>
+<span id="L228" class="LineNr">228 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L229" class="LineNr">229 </span>    68/push  <a href='057write.subx.html#L148'>_test-stream</a>/imm32
+<span id="L230" class="LineNr">230 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L231" class="LineNr">231 </span>    e8/call  <a href='055stream.subx.html#L17'>clear-stream</a>/disp32
+<span id="L232" class="LineNr">232 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L233" class="LineNr">233 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
+<span id="L234" class="LineNr">234 </span>    <span class="subxS1Comment"># . clear-stream(_test-buffered-file-&gt;buffer)</span>
+<span id="L235" class="LineNr">235 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L236" class="LineNr">236 </span>    68/push  <a href='061read-byte.subx.html#L278'>_test-buffered-file-&gt;buffer</a>/imm32
+<span id="L237" class="LineNr">237 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L238" class="LineNr">238 </span>    e8/call  <a href='055stream.subx.html#L17'>clear-stream</a>/disp32
+<span id="L239" class="LineNr">239 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L240" class="LineNr">240 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
+<span id="L241" class="LineNr">241 </span>    <span class="subxS1Comment"># . write(_test-stream, &quot;Abcdefgh&quot;)</span>
+<span id="L242" class="LineNr">242 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L243" class="LineNr">243 </span>    68/push  <span class="Constant">&quot;Abcdefgh&quot;</span>/imm32
+<span id="L244" class="LineNr">244 </span>    68/push  <a href='057write.subx.html#L148'>_test-stream</a>/imm32
+<span id="L245" class="LineNr">245 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L246" class="LineNr">246 </span>    e8/call  <a href='057write.subx.html#L24'>write</a>/disp32
+<span id="L247" class="LineNr">247 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L248" class="LineNr">248 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              8/imm32           <span class="subxComment"># add to esp</span>
+<span id="L249" class="LineNr">249 </span>    <span class="subxComment"># pretend buffer is full</span>
+<span id="L250" class="LineNr">250 </span>    <span class="subxS1Comment"># . _test-buffered-file-&gt;read = 6  # &gt;= _test-buffered-file-&gt;length</span>
+<span id="L251" class="LineNr">251 </span>    b8/copy-to-eax  <a href='061read-byte.subx.html#L275'>_test-buffered-file</a>/imm32
+<span id="L252" class="LineNr">252 </span>    c7          0/subop/copy        1/mod/*+disp8   0/rm32/eax   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>          8/disp8         6/imm32           <span class="subxComment"># copy to *(eax+8)</span>
+<span id="L253" class="LineNr">253 </span>    <span class="subxComment"># read-byte-buffered(_test-buffered-file)</span>
+<span id="L254" class="LineNr">254 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L255" class="LineNr">255 </span>    68/push  <a href='061read-byte.subx.html#L275'>_test-buffered-file</a>/imm32
+<span id="L256" class="LineNr">256 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L257" class="LineNr">257 </span>    e8/call  <a href='061read-byte.subx.html#L38'>read-byte-buffered</a>/disp32
+<span id="L258" class="LineNr">258 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L259" class="LineNr">259 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
+<span id="L260" class="LineNr">260 </span>    <span class="subxComment"># check-ints-equal(eax, 'A', msg)</span>
+<span id="L261" class="LineNr">261 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L262" class="LineNr">262 </span>    68/push  <span class="Constant">&quot;F - test-read-byte-buffered-refills-buffer&quot;</span>/imm32
+<span id="L263" class="LineNr">263 </span>    68/push  0x41/imm32
+<span id="L264" class="LineNr">264 </span>    50/push-eax
+<span id="L265" class="LineNr">265 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L266" class="LineNr">266 </span>    e8/call  <a href='051test.subx.html#L24'>check-ints-equal</a>/disp32
+<span id="L267" class="LineNr">267 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L268" class="LineNr">268 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              0xc/imm32         <span class="subxComment"># add to esp</span>
+<span id="L269" class="LineNr">269 </span>    <span class="subxS1Comment"># . end</span>
+<span id="L270" class="LineNr">270 </span>    c3/return
+<span id="L271" class="LineNr">271 </span>
+<span id="L272" class="LineNr">272 </span>== data
+<span id="L273" class="LineNr">273 </span>
+<span id="L274" class="LineNr">274 </span><span class="subxComment"># a test buffered file for _test-stream</span>
+<span id="L275" class="LineNr">275 </span><span class="subxMinorFunction">_test-buffered-file</span>:
+<span id="L276" class="LineNr">276 </span>    <span class="subxComment"># file descriptor or (address stream)</span>
+<span id="L277" class="LineNr">277 </span>    <a href='057write.subx.html#L148'>_test-stream</a>/imm32
+<span id="L278" class="LineNr">278 </span><span class="subxMinorFunction">_test-buffered-file-&gt;buffer</span>:
+<span id="L279" class="LineNr">279 </span>    <span class="subxComment"># current write index</span>
+<span id="L280" class="LineNr">280 </span>    0/imm32
+<span id="L281" class="LineNr">281 </span>    <span class="subxComment"># current read index</span>
+<span id="L282" class="LineNr">282 </span>    0/imm32
+<span id="L283" class="LineNr">283 </span>    <span class="subxComment"># length</span>
+<span id="L284" class="LineNr">284 </span>    6/imm32
+<span id="L285" class="LineNr">285 </span>    <span class="subxComment"># data</span>
+<span id="L286" class="LineNr">286 </span>    00 00 00 00 00 00  <span class="subxComment"># 6 bytes</span>
+<span id="L287" class="LineNr">287 </span>
+<span id="L288" class="LineNr">288 </span><span class="subxMinorFunction">_test-input-stream</span>:
+<span id="L289" class="LineNr">289 </span>    <span class="subxComment"># current write index</span>
+<span id="L290" class="LineNr">290 </span>    0/imm32
+<span id="L291" class="LineNr">291 </span>    <span class="subxComment"># current read index</span>
+<span id="L292" class="LineNr">292 </span>    0/imm32
+<span id="L293" class="LineNr">293 </span>    <span class="subxComment"># length</span>
+<span id="L294" class="LineNr">294 </span>    0x100/imm32  <span class="subxComment"># 256 bytes</span>
+<span id="L295" class="LineNr">295 </span>    <span class="subxComment"># data (16 lines x 16 bytes/line)</span>
+<span id="L296" class="LineNr">296 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+<span id="L297" class="LineNr">297 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+<span id="L298" class="LineNr">298 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+<span id="L299" class="LineNr">299 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
+<span id="L300" class="LineNr">300 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 <span id="L301" class="LineNr">301 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 <span id="L302" class="LineNr">302 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 <span id="L303" class="LineNr">303 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
@@ -371,26 +371,22 @@ if ('onhashchange' in window) {
 <span id="L309" class="LineNr">309 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 <span id="L310" class="LineNr">310 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 <span id="L311" class="LineNr">311 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-<span id="L312" class="LineNr">312 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-<span id="L313" class="LineNr">313 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-<span id="L314" class="LineNr">314 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-<span id="L315" class="LineNr">315 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-<span id="L316" class="LineNr">316 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
-<span id="L317" class="LineNr">317 </span>
-<span id="L318" class="LineNr">318 </span><span class="subxComment"># a test buffered file for _test-input-stream</span>
-<span id="L319" class="LineNr">319 </span><span class="subxMinorFunction">_test-input-buffered-file</span>:
-<span id="L320" class="LineNr">320 </span>    <span class="subxComment"># file descriptor or (address stream)</span>
-<span id="L321" class="LineNr">321 </span>    <a href='061read-byte.subx.html#L293'>_test-input-stream</a>/imm32
-<span id="L322" class="LineNr">322 </span>    <span class="subxComment"># current write index</span>
-<span id="L323" class="LineNr">323 </span>    0/imm32
-<span id="L324" class="LineNr">324 </span>    <span class="subxComment"># current read index</span>
-<span id="L325" class="LineNr">325 </span>    0/imm32
-<span id="L326" class="LineNr">326 </span>    <span class="subxComment"># length</span>
-<span id="L327" class="LineNr">327 </span>    6/imm32
-<span id="L328" class="LineNr">328 </span>    <span class="subxComment"># data</span>
-<span id="L329" class="LineNr">329 </span>    00 00 00 00 00 00  <span class="subxComment"># 6 bytes</span>
-<span id="L330" class="LineNr">330 </span>
-<span id="L331" class="LineNr">331 </span><span class="subxS2Comment"># . . vim&#0058;nowrap:textwidth=0</span>
+<span id="L312" class="LineNr">312 </span>
+<span id="L313" class="LineNr">313 </span><span class="subxComment"># a test buffered file for _test-input-stream</span>
+<span id="L314" class="LineNr">314 </span><span class="subxMinorFunction">_test-input-buffered-file</span>:
+<span id="L315" class="LineNr">315 </span>    <span class="subxComment"># file descriptor or (address stream)</span>
+<span id="L316" class="LineNr">316 </span>    <a href='061read-byte.subx.html#L288'>_test-input-stream</a>/imm32
+<span id="L317" class="LineNr">317 </span><span class="subxMinorFunction">_test-input-buffered-file-&gt;buffer</span>:
+<span id="L318" class="LineNr">318 </span>    <span class="subxComment"># current write index</span>
+<span id="L319" class="LineNr">319 </span>    0/imm32
+<span id="L320" class="LineNr">320 </span>    <span class="subxComment"># current read index</span>
+<span id="L321" class="LineNr">321 </span>    0/imm32
+<span id="L322" class="LineNr">322 </span>    <span class="subxComment"># length</span>
+<span id="L323" class="LineNr">323 </span>    6/imm32
+<span id="L324" class="LineNr">324 </span>    <span class="subxComment"># data</span>
+<span id="L325" class="LineNr">325 </span>    00 00 00 00 00 00  <span class="subxComment"># 6 bytes</span>
+<span id="L326" class="LineNr">326 </span>
+<span id="L327" class="LineNr">327 </span><span class="subxS2Comment"># . . vim&#0058;nowrap:textwidth=0</span>
 </pre>
 </body>
 </html>