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authorKartik Agaram <vc@akkartik.com>2018-10-01 11:09:07 -0700
committerKartik Agaram <vc@akkartik.com>2018-10-01 11:09:07 -0700
commitca00f6b97c52262b39c28cccb76b52e059553f13 (patch)
tree3c6e1ea3e36c849a344eac03a468b3e853241bb3 /subx/014indirect_addressing.cc
parent75e30d2faa3480ae8810856d6527089ba88346a5 (diff)
downloadmu-ca00f6b97c52262b39c28cccb76b52e059553f13.tar.gz
4634
Diffstat (limited to 'subx/014indirect_addressing.cc')
-rw-r--r--subx/014indirect_addressing.cc182
1 files changed, 91 insertions, 91 deletions
diff --git a/subx/014indirect_addressing.cc b/subx/014indirect_addressing.cc
index b48cbd85..0882f4e8 100644
--- a/subx/014indirect_addressing.cc
+++ b/subx/014indirect_addressing.cc
@@ -3,15 +3,15 @@
 
 :(scenario add_r32_to_mem_at_r32)
 % Reg[EBX].i = 0x10;
-% Reg[EAX].i = 0x60;
+% Reg[EAX].i = 0x2000;
 == 0x1  # code segment
 # op  ModR/M  SIB   displacement  immediate
   01  18                                     # add EBX to *EAX
 # ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX)
-== 0x60  # data segment
+== 0x2000  # data segment
 01 00 00 00  # 1
 +run: add EBX to r/m32
-+run: effective address is 0x60 (EAX)
++run: effective address is 0x2000 (EAX)
 +run: storing 0x00000011
 
 :(before "End Mod Special-cases(addr)")
@@ -31,16 +31,16 @@ case 0:  // indirect addressing
 put(name, "03", "add rm32 to r32");
 
 :(scenario add_mem_at_r32_to_r32)
-% Reg[EAX].i = 0x60;
+% Reg[EAX].i = 0x2000;
 % Reg[EBX].i = 0x10;
 == 0x1  # code segment
 # op  ModR/M  SIB   displacement  immediate
   03  18                                      # add *EAX to EBX
 # ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX)
-== 0x60  # data segment
+== 0x2000  # data segment
 01 00 00 00  # 1
 +run: add r/m32 to EBX
-+run: effective address is 0x60 (EAX)
++run: effective address is 0x2000 (EAX)
 +run: storing 0x00000011
 
 :(before "End Single-Byte Opcodes")
@@ -56,16 +56,16 @@ case 0x03: {  // add r/m32 to r32
 //:: subtract
 
 :(scenario subtract_r32_from_mem_at_r32)
-% Reg[EAX].i = 0x60;
+% Reg[EAX].i = 0x2000;
 % Reg[EBX].i = 1;
 == 0x1  # code segment
 # op  ModR/M  SIB   displacement  immediate
   29  18                                      # subtract EBX from *EAX
 # ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX)
-== 0x60  # data segment
+== 0x2000  # data segment
 0a 00 00 00  # 10
 +run: subtract EBX from r/m32
-+run: effective address is 0x60 (EAX)
++run: effective address is 0x2000 (EAX)
 +run: storing 0x00000009
 
 //:
@@ -74,16 +74,16 @@ case 0x03: {  // add r/m32 to r32
 put(name, "2b", "subtract rm32 from r32");
 
 :(scenario subtract_mem_at_r32_from_r32)
-% Reg[EAX].i = 0x60;
+% Reg[EAX].i = 0x2000;
 % Reg[EBX].i = 10;
 == 0x1  # code segment
 # op  ModR/M  SIB   displacement  immediate
   2b  18                                      # subtract *EAX from EBX
 # ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX)
-== 0x60  # data segment
+== 0x2000  # data segment
 01 00 00 00  # 1
 +run: subtract r/m32 from EBX
-+run: effective address is 0x60 (EAX)
++run: effective address is 0x2000 (EAX)
 +run: storing 0x00000009
 
 :(before "End Single-Byte Opcodes")
@@ -99,16 +99,16 @@ case 0x2b: {  // subtract r/m32 from r32
 //:: and
 
 :(scenario and_r32_with_mem_at_r32)
-% Reg[EAX].i = 0x60;
+% Reg[EAX].i = 0x2000;
 % Reg[EBX].i = 0xff;
 == 0x1  # code segment
 # op  ModR/M  SIB   displacement  immediate
   21  18                                      # and EBX with *EAX
 # ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX)
-== 0x60  # data segment
+== 0x2000  # data segment
 0d 0c 0b 0a  # 0x0a0b0c0d
 +run: and EBX with r/m32
-+run: effective address is 0x60 (EAX)
++run: effective address is 0x2000 (EAX)
 +run: storing 0x0000000d
 
 //:
@@ -117,16 +117,16 @@ case 0x2b: {  // subtract r/m32 from r32
 put(name, "23", "r32 = bitwise AND of r32 with rm32");
 
 :(scenario and_mem_at_r32_with_r32)
-% Reg[EAX].i = 0x60;
+% Reg[EAX].i = 0x2000;
 % Reg[EBX].i = 0x0a0b0c0d;
 == 0x1  # code segment
 # op  ModR/M  SIB   displacement  immediate
   23  18                                      # and *EAX with EBX
 # ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX)
-== 0x60  # data segment
+== 0x2000  # data segment
 ff 00 00 00  # 0xff
 +run: and r/m32 with EBX
-+run: effective address is 0x60 (EAX)
++run: effective address is 0x2000 (EAX)
 +run: storing 0x0000000d
 
 :(before "End Single-Byte Opcodes")
@@ -142,16 +142,16 @@ case 0x23: {  // and r/m32 with r32
 //:: or
 
 :(scenario or_r32_with_mem_at_r32)
-% Reg[EAX].i = 0x60;
+% Reg[EAX].i = 0x2000;
 % Reg[EBX].i = 0xa0b0c0d0;
 == 0x1  # code segment
 # op  ModR/M  SIB   displacement  immediate
   09  18                                      # or EBX with *EAX
 # ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX)
-== 0x60  # data segment
+== 0x2000  # data segment
 0d 0c 0b 0a  # 0x0a0b0c0d
 +run: or EBX with r/m32
-+run: effective address is 0x60 (EAX)
++run: effective address is 0x2000 (EAX)
 +run: storing 0xaabbccdd
 
 //:
@@ -160,16 +160,16 @@ case 0x23: {  // and r/m32 with r32
 put(name, "0b", "r32 = bitwise OR of r32 with rm32");
 
 :(scenario or_mem_at_r32_with_r32)
-% Reg[EAX].i = 0x60;
+% Reg[EAX].i = 0x2000;
 % Reg[EBX].i = 0xa0b0c0d0;
 == 0x1  # code segment
 # op  ModR/M  SIB   displacement  immediate
   0b  18                                      # or *EAX with EBX
 # ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX)
-== 0x60  # data segment
+== 0x2000  # data segment
 0d 0c 0b 0a  # 0x0a0b0c0d
 +run: or r/m32 with EBX
-+run: effective address is 0x60 (EAX)
++run: effective address is 0x2000 (EAX)
 +run: storing 0xaabbccdd
 
 :(before "End Single-Byte Opcodes")
@@ -185,16 +185,16 @@ case 0x0b: {  // or r/m32 with r32
 //:: xor
 
 :(scenario xor_r32_with_mem_at_r32)
-% Reg[EAX].i = 0x60;
+% Reg[EAX].i = 0x2000;
 % Reg[EBX].i = 0xa0b0c0d0;
 == 0x1  # code segment
 # op  ModR/M  SIB   displacement  immediate
   31  18                                      # xor EBX with *EAX
 # ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX)
-== 0x60  # data segment
+== 0x2000  # data segment
 0d 0c bb aa  # 0xaabb0c0d
 +run: xor EBX with r/m32
-+run: effective address is 0x60 (EAX)
++run: effective address is 0x2000 (EAX)
 +run: storing 0x0a0bccdd
 
 //:
@@ -203,16 +203,16 @@ case 0x0b: {  // or r/m32 with r32
 put(name, "33", "r32 = bitwise XOR of r32 with rm32");
 
 :(scenario xor_mem_at_r32_with_r32)
-% Reg[EAX].i = 0x60;
+% Reg[EAX].i = 0x2000;
 % Reg[EBX].i = 0xa0b0c0d0;
 == 0x1  # code segment
 # op  ModR/M  SIB   displacement  immediate
   33  18                                      # xor *EAX with EBX
 # ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX)
-== 0x60  # data segment
+== 0x2000  # data segment
 0d 0c 0b 0a  # 0x0a0b0c0d
 +run: xor r/m32 with EBX
-+run: effective address is 0x60 (EAX)
++run: effective address is 0x2000 (EAX)
 +run: storing 0xaabbccdd
 
 :(before "End Single-Byte Opcodes")
@@ -228,57 +228,57 @@ case 0x33: {  // xor r/m32 with r32
 //:: not
 
 :(scenario not_of_mem_at_r32)
-% Reg[EBX].i = 0x60;
+% Reg[EBX].i = 0x2000;
 == 0x1  # code segment
 # op  ModR/M  SIB   displacement  immediate
   f7  13                                      # negate *EBX
 # ModR/M in binary: 00 (indirect mode) 010 (subop not) 011 (dest EBX)
-== 0x60  # data segment
+== 0x2000  # data segment
 ff 00 0f 0f  # 0x0f0f00ff
 +run: operate on r/m32
-+run: effective address is 0x60 (EBX)
++run: effective address is 0x2000 (EBX)
 +run: subop: not
 +run: storing 0xf0f0ff00
 
 //:: compare (cmp)
 
 :(scenario compare_mem_at_r32_with_r32_greater)
-% Reg[EAX].i = 0x60;
+% Reg[EAX].i = 0x2000;
 % Reg[EBX].i = 0x0a0b0c07;
 == 0x1  # code segment
 # op  ModR/M  SIB   displacement  immediate
   39  18                                      # compare EBX with *EAX
 # ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX)
-== 0x60  # data segment
+== 0x2000  # data segment
 0d 0c 0b 0a  # 0x0a0b0c0d
 +run: compare EBX with r/m32
-+run: effective address is 0x60 (EAX)
++run: effective address is 0x2000 (EAX)
 +run: SF=0; ZF=0; OF=0
 
 :(scenario compare_mem_at_r32_with_r32_lesser)
-% Reg[EAX].i = 0x60;
+% Reg[EAX].i = 0x2000;
 % Reg[EBX].i = 0x0a0b0c0d;
 == 0x1  # code segment
 # op  ModR/M  SIB   displacement  immediate
   39  18                                      # compare EBX with *EAX
 # ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX)
-== 0x60  # data segment
+== 0x2000  # data segment
 07 0c 0b 0a  # 0x0a0b0c0d
 +run: compare EBX with r/m32
-+run: effective address is 0x60 (EAX)
++run: effective address is 0x2000 (EAX)
 +run: SF=1; ZF=0; OF=0
 
 :(scenario compare_mem_at_r32_with_r32_equal)
-% Reg[EAX].i = 0x60;
+% Reg[EAX].i = 0x2000;
 % Reg[EBX].i = 0x0a0b0c0d;
 == 0x1  # code segment
 # op  ModR/M  SIB   displacement  immediate
   39  18                                      # compare EBX with *EAX
 # ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX)
-== 0x60  # data segment
+== 0x2000  # data segment
 0d 0c 0b 0a  # 0x0a0b0c0d
 +run: compare EBX with r/m32
-+run: effective address is 0x60 (EAX)
++run: effective address is 0x2000 (EAX)
 +run: SF=0; ZF=1; OF=0
 
 //:
@@ -287,16 +287,16 @@ ff 00 0f 0f  # 0x0f0f00ff
 put(name, "3b", "compare: set SF if r32 < rm32");
 
 :(scenario compare_r32_with_mem_at_r32_greater)
-% Reg[EAX].i = 0x60;
+% Reg[EAX].i = 0x2000;
 % Reg[EBX].i = 0x0a0b0c0d;
 == 0x1  # code segment
 # op  ModR/M  SIB   displacement  immediate
   3b  18                                      # compare *EAX with EBX
 # ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX)
-== 0x60  # data segment
+== 0x2000  # data segment
 07 0c 0b 0a  # 0x0a0b0c0d
 +run: compare r/m32 with EBX
-+run: effective address is 0x60 (EAX)
++run: effective address is 0x2000 (EAX)
 +run: SF=0; ZF=0; OF=0
 
 :(before "End Single-Byte Opcodes")
@@ -316,29 +316,29 @@ case 0x3b: {  // set SF if r32 < r/m32
 }
 
 :(scenario compare_r32_with_mem_at_r32_lesser)
-% Reg[EAX].i = 0x60;
+% Reg[EAX].i = 0x2000;
 % Reg[EBX].i = 0x0a0b0c07;
 == 0x1  # code segment
 # op  ModR/M  SIB   displacement  immediate
   3b  18                                      # compare *EAX with EBX
 # ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX)
-== 0x60  # data segment
+== 0x2000  # data segment
 0d 0c 0b 0a  # 0x0a0b0c0d
 +run: compare r/m32 with EBX
-+run: effective address is 0x60 (EAX)
++run: effective address is 0x2000 (EAX)
 +run: SF=1; ZF=0; OF=0
 
 :(scenario compare_r32_with_mem_at_r32_equal)
-% Reg[EAX].i = 0x60;
+% Reg[EAX].i = 0x2000;
 % Reg[EBX].i = 0x0a0b0c0d;
 == 0x1  # code segment
 # op  ModR/M  SIB   displacement  immediate
   3b  18                                      # compare *EAX with EBX
 # ModR/M in binary: 00 (indirect mode) 011 (src EAX) 000 (dest EAX)
-== 0x60  # data segment
+== 0x2000  # data segment
 0d 0c 0b 0a  # 0x0a0b0c0d
 +run: compare r/m32 with EBX
-+run: effective address is 0x60 (EAX)
++run: effective address is 0x2000 (EAX)
 +run: SF=0; ZF=1; OF=0
 
 //:: copy (mov)
@@ -360,15 +360,15 @@ case 0x3b: {  // set SF if r32 < r/m32
 put(name, "8b", "copy rm32 to r32");
 
 :(scenario copy_mem_at_r32_to_r32)
-% Reg[EAX].i = 0x60;
+% Reg[EAX].i = 0x2000;
 == 0x1  # code segment
 # op  ModR/M  SIB   displacement  immediate
   8b  18                                      # copy *EAX to EBX
 # ModR/M in binary: 00 (indirect mode) 011 (src EBX) 000 (dest EAX)
-== 0x60  # data segment
+== 0x2000  # data segment
 af 00 00 00  # 0xaf
 +run: copy r/m32 to EBX
-+run: effective address is 0x60 (EAX)
++run: effective address is 0x2000 (EAX)
 +run: storing 0x000000af
 
 :(before "End Single-Byte Opcodes")
@@ -389,17 +389,17 @@ put(name, "88", "copy r8 (lowermost byte of r32) to r8/m8-at-r32");
 
 :(scenario copy_r8_to_mem_at_r32)
 % Reg[EBX].i = 0x224488ab;
-% Reg[EAX].i = 0x60;
+% Reg[EAX].i = 0x2000;
 == 0x1
 # op  ModR/M  SIB   displacement  immediate
   88  18                                      # copy just the lowermost byte of EBX to the byte at *EAX
 # ModR/M in binary: 00 (indirect mode) 011 (src EBX) 000 (dest EAX)
-== 0x60
+== 0x2000
 f0 cc bb aa  # 0xf0 with more data in following bytes
 +run: copy lowermost byte of EBX to r8/m8-at-r32
-+run: effective address is 0x60 (EAX)
++run: effective address is 0x2000 (EAX)
 +run: storing 0xab
-% CHECK_EQ(0xaabbccab, read_mem_u32(0x60));
+% CHECK_EQ(0xaabbccab, read_mem_u32(0x2000));
 
 :(before "End Single-Byte Opcodes")
 case 0x88: {  // copy r/m8 to r8
@@ -420,15 +420,15 @@ put(name, "8a", "copy r8/m8-at-r32 to r8 (lowermost byte of r32)");
 
 :(scenario copy_mem_at_r32_to_r8)
 % Reg[EBX].i = 0xaabbcc0f;  // one nibble each of lowest byte set to all 0s and all 1s, to maximize value of this test
-% Reg[EAX].i = 0x60;
+% Reg[EAX].i = 0x2000;
 == 0x1
 # op  ModR/M  SIB   displacement  immediate
   8a  18                                      # copy just the byte at *EAX to lowermost byte of EBX (clearing remaining bytes)
 # ModR/M in binary: 00 (indirect mode) 011 (dest EBX) 000 (src EAX)
-== 0x60  # data segment
+== 0x2000  # data segment
 ab ff ff ff  # 0xab with more data in following bytes
 +run: copy r8/m8-at-r32 to lowermost byte of EBX
-+run: effective address is 0x60 (EAX)
++run: effective address is 0x2000 (EAX)
 +run: storing 0xab
 # remaining bytes of EBX are *not* cleared
 +run: EBX now contains 0xaabbccab
@@ -449,18 +449,18 @@ case 0x8a: {  // copy r/m8 to r8
 //:: jump
 
 :(scenario jump_mem_at_r32)
-% Reg[EAX].i = 0x60;
+% Reg[EAX].i = 0x2000;
 == 0x1  # code segment
 # op  ModR/M  SIB   displacement  immediate
   ff  20                                      # jump to *EAX
 # ModR/M in binary: 00 (indirect mode) 100 (jump to r/m32) 000 (src EAX)
   05                              00 00 00 01
   05                              00 00 00 02
-== 0x60  # data segment
+== 0x2000  # data segment
 08 00 00 00  # 8
 +run: inst: 0x00000001
 +run: jump to r/m32
-+run: effective address is 0x60 (EAX)
++run: effective address is 0x2000 (EAX)
 +run: jumping to 0x00000008
 +run: inst: 0x00000008
 -run: inst: 0x00000003
@@ -477,16 +477,16 @@ case 4: {  // jump to r/m32
 //:: push
 
 :(scenario push_mem_at_r32)
-% Reg[EAX].i = 0x60;
+% Reg[EAX].i = 0x2000;
 % Reg[ESP].u = 0x14;
 == 0x1  # code segment
 # op  ModR/M  SIB   displacement  immediate
   ff  30                                      # push *EAX to stack
 # ModR/M in binary: 00 (indirect mode) 110 (push r/m32) 000 (src EAX)
-== 0x60  # data segment
+== 0x2000  # data segment
 af 00 00 00  # 0xaf
 +run: push r/m32
-+run: effective address is 0x60 (EAX)
++run: effective address is 0x2000 (EAX)
 +run: decrementing ESP to 0x00000010
 +run: pushing value 0x000000af
 
@@ -505,17 +505,17 @@ put(name, "8f", "pop top of stack to rm32");
 
 :(scenario pop_mem_at_r32)
 % Reg[EAX].i = 0x60;
-% Reg[ESP].u = 0x10;
+% Reg[ESP].u = 0x2000;
 == 0x1  # code segment
 # op  ModR/M  SIB   displacement  immediate
   8f  00                                      # pop stack into *EAX
 # ModR/M in binary: 00 (indirect mode) 000 (pop r/m32) 000 (dest EAX)
-== 0x10  # data segment
+== 0x2000  # data segment
 30 00 00 00  # 0x30
 +run: pop into r/m32
 +run: effective address is 0x60 (EAX)
 +run: popping value 0x00000030
-+run: incrementing ESP to 0x00000014
++run: incrementing ESP to 0x00002004
 
 :(before "End Single-Byte Opcodes")
 case 0x8f: {  // pop stack into r/m32
@@ -538,12 +538,12 @@ case 0x8f: {  // pop stack into r/m32
 % Reg[EBX].i = 0x10;  // source
 == 0x1  # code segment
 # op  ModR/M  SIB   displacement  immediate
-  01  1d            60 00 00 00              # add EBX to *0x60
+  01  1d            00 20 00 00              # add EBX to *0x2000
 # ModR/M in binary: 00 (indirect mode) 011 (src EBX) 101 (dest in disp32)
-== 0x60  # data segment
+== 0x2000  # data segment
 01 00 00 00  # 1
 +run: add EBX to r/m32
-+run: effective address is 0x60 (disp32)
++run: effective address is 0x2000 (disp32)
 +run: storing 0x00000011
 
 :(before "End Mod 0 Special-cases(addr)")
@@ -556,16 +556,16 @@ case 5:  // exception: mod 0b00 rm 0b101 => incoming disp32
 
 :(scenario add_r32_to_mem_at_r32_plus_disp8)
 % Reg[EBX].i = 0x10;  // source
-% Reg[EAX].i = 0x5e;  // dest
+% Reg[EAX].i = 0x1ffe;  // dest
 == 0x1  # code segment
 # op  ModR/M  SIB   displacement  immediate
   01  58            02                       # add EBX to *(EAX+2)
 # ModR/M in binary: 01 (indirect+disp8 mode) 011 (src EBX) 000 (dest EAX)
-== 0x60  # data segment
+== 0x2000  # data segment
 01 00 00 00  # 1
 +run: add EBX to r/m32
-+run: effective address is initially 0x5e (EAX)
-+run: effective address is 0x60 (after adding disp8)
++run: effective address is initially 0x1ffe (EAX)
++run: effective address is 0x2000 (after adding disp8)
 +run: storing 0x00000011
 
 :(before "End Mod Special-cases(addr)")
@@ -585,32 +585,32 @@ case 1:  // indirect + disp8 addressing
 
 :(scenario add_r32_to_mem_at_r32_plus_negative_disp8)
 % Reg[EBX].i = 0x10;  // source
-% Reg[EAX].i = 0x61;  // dest
+% Reg[EAX].i = 0x2001;  // dest
 == 0x1  # code segment
 # op  ModR/M  SIB   displacement  immediate
   01  58            ff                       # add EBX to *(EAX-1)
 # ModR/M in binary: 01 (indirect+disp8 mode) 011 (src EBX) 000 (dest EAX)
-== 0x60  # data segment
+== 0x2000  # data segment
 01 00 00 00  # 1
 +run: add EBX to r/m32
-+run: effective address is initially 0x61 (EAX)
-+run: effective address is 0x60 (after adding disp8)
++run: effective address is initially 0x2001 (EAX)
++run: effective address is 0x2000 (after adding disp8)
 +run: storing 0x00000011
 
 //:
 
 :(scenario add_r32_to_mem_at_r32_plus_disp32)
 % Reg[EBX].i = 0x10;  // source
-% Reg[EAX].i = 0x5e;  // dest
+% Reg[EAX].i = 0x1ffe;  // dest
 == 0x1  # code segment
 # op  ModR/M  SIB   displacement  immediate
   01  98            02 00 00 00              # add EBX to *(EAX+2)
 # ModR/M in binary: 10 (indirect+disp32 mode) 011 (src EBX) 000 (dest EAX)
-== 0x60  # data segment
+== 0x2000  # data segment
 01 00 00 00  # 1
 +run: add EBX to r/m32
-+run: effective address is initially 0x5e (EAX)
-+run: effective address is 0x60 (after adding disp32)
++run: effective address is initially 0x1ffe (EAX)
++run: effective address is 0x2000 (after adding disp32)
 +run: storing 0x00000011
 
 :(before "End Mod Special-cases(addr)")
@@ -630,16 +630,16 @@ case 2:  // indirect + disp32 addressing
 
 :(scenario add_r32_to_mem_at_r32_plus_negative_disp32)
 % Reg[EBX].i = 0x10;  // source
-% Reg[EAX].i = 0x61;  // dest
+% Reg[EAX].i = 0x2001;  // dest
 == 0x1  # code segment
 # op  ModR/M  SIB   displacement  immediate
   01  98            ff ff ff ff              # add EBX to *(EAX-1)
 # ModR/M in binary: 10 (indirect+disp32 mode) 011 (src EBX) 000 (dest EAX)
-== 0x60  # data segment
+== 0x2000  # data segment
 01 00 00 00  # 1
 +run: add EBX to r/m32
-+run: effective address is initially 0x61 (EAX)
-+run: effective address is 0x60 (after adding disp32)
++run: effective address is initially 0x2001 (EAX)
++run: effective address is 0x2000 (after adding disp32)
 +run: storing 0x00000011
 
 //:: lea
@@ -648,13 +648,13 @@ case 2:  // indirect + disp32 addressing
 put(name, "8d", "load effective address of memory in rm32 into r32");
 
 :(scenario lea)
-% Reg[EAX].u = 0x60;
+% Reg[EAX].u = 0x2000;
 == 0x1
 # op  ModR/M  SIB   displacement  immediate
   8d  18
 # ModR/M in binary: 00 (indirect mode) 011 (dest EBX) 000 (src EAX)
 +run: lea into EBX
-+run: effective address is 0x60 (EAX)
++run: effective address is 0x2000 (EAX)
 
 :(before "End Single-Byte Opcodes")
 case 0x8d: {  // lea m32 to r32