diff options
| -rw-r--r-- | boot.subx | 30 |
1 files changed, 14 insertions, 16 deletions
diff --git a/boot.subx b/boot.subx index 3e428f0f..dcca8b2a 100644 --- a/boot.subx +++ b/boot.subx @@ -403,25 +403,23 @@ keyboard-interrupt-handler: 8a # copy m8 at rm32 to r8 80 # 10/mod/*+disp32 000/r8/al 000/rm32/eax 00 86 00 00 # disp32 [label] +== code $keyboard-interrupt-handler:select-map-done: # - if there's no character mapping, return - 3c 00 # compare al, 0 - 74 13 # jump to epilogue if = [label] -# 2c6: - # - store al in keyboard buffer - 88 # copy r8 to m8 at r32 - 81 # 10/mod/*+disp32 000/r8/al 001/rm32/ecx - 30 80 00 00 # disp32 [label] - # increment index - fe # increment byte - 05 # 00/mod/indirect 000/subop/increment 101/rm32/use-disp32 - 28 80 00 00 # disp32 [label] - # clear top nibble of index (keyboard buffer is circular) - 80 # and byte - 25 # 00/mod/indirect 100/subop/and 101/rm32/use-disp32 - 28 80 00 00 # disp32 [label] - 0f # imm8 + { + 3c/compare-al-and 0/imm8 + 74/jump-if-= break/disp8 + # - store al in keyboard buffer +== data + 88 # copy r8 to m8 at r32 + 81 # 10/mod/*+disp32 000/r8/al 001/rm32/ecx + 30 80 00 00 # disp32 [label] == code + # increment index + fe/increment-byte *Keyboard-buffer:write + # clear top nibble of index (keyboard buffer is circular) + 80 4/subop/and-byte *Keyboard-buffer:write 0x0f/imm8 + } $keyboard-interrupt-handler:epilogue: # epilogue 61/pop-all-registers |