diff options
| author | Kartik K. Agaram <vc@akkartik.com> | 2021-02-21 00:22:48 -0800 |
|---|---|---|
| committer | Kartik K. Agaram <vc@akkartik.com> | 2021-02-21 01:17:00 -0800 |
| commit | b21f1787a0eafecee244a913e4dc7eb3e7a7cc06 (patch) | |
| tree | 035a4c1dca40e32d4e33d16c21f1842c7a0c809d /baremetal | |
| parent | b70748960e48fb6d762cb900d7088a9e99dde535 (diff) | |
| download | mu-b21f1787a0eafecee244a913e4dc7eb3e7a7cc06.tar.gz | |
7764
Diffstat (limited to 'baremetal')
| -rw-r--r-- | baremetal/boot.hex | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/baremetal/boot.hex b/baremetal/boot.hex index bf5ea9fb..2419b37f 100644 --- a/baremetal/boot.hex +++ b/baremetal/boot.hex @@ -351,7 +351,7 @@ e9 fd ff # loop forever # $1: # if (al == 0xb6) shift = false # right shift is being lifted 3c b6 # compare al, 0xb6 - 75 0a # jump to $1 if != [label] + 75 0a # jump to $2 if != [label] # *shift = 0 c7 # copy imm32 to rm32 05 # 00/mod/indirect 000/subop/copy 101/rm32/use-disp32 @@ -389,13 +389,12 @@ e9 fd ff # loop forever # 276: # $4: # - convert key to character - # if (shift) use keyboard normal map + # if (shift) use keyboard shift map 81 # operate on rm32 and imm32 3d # 00/mod/indirect 111/subop/compare 101/rm32/use-disp32 10 80 00 00 # disp32 = shift [label] 00 00 00 00 # imm32 74 08 # jump to $5 if = [label] - # otherwise use keyboard shift map # al <- *(keyboard shift map + eax) 8a # copy m8 at rm32 to r8 80 # 10/mod/*+disp32 000/r8/al 000/rm32/eax @@ -403,6 +402,7 @@ e9 fd ff # loop forever eb 06 # jump to $6 [label] # 28a: # $5: + # otherwise use keyboard normal map # al <- *(keyboard normal map + eax) 8a # copy m8 at rm32 to r8 80 # 10/mod/*+disp32 000/r8/al 000/rm32/eax @@ -425,7 +425,7 @@ e9 fd ff # loop forever 25 # 00/mod/indirect 100/subop/and 101/rm32/use-disp32 28 80 00 00 # disp32 [label] 0f # imm8 -# 2a9: +# 2a7: # epilogue 61 # pop all registers fb # enable interrupts |