diff options
| author | Kartik Agaram <vc@akkartik.com> | 2020-12-26 23:38:52 -0800 |
|---|---|---|
| committer | Kartik Agaram <vc@akkartik.com> | 2020-12-26 23:38:52 -0800 |
| commit | e5b2f3f1694bca4e9fe54937e78fdb211fafe153 (patch) | |
| tree | 91f355175f82917c80336e1bde2a0855e3e3c9a1 /baremetal | |
| parent | 88d2df2f96c8cb86d1d61b32b47f03a7ff42efbf (diff) | |
| download | mu-e5b2f3f1694bca4e9fe54937e78fdb211fafe153.tar.gz | |
7421 - baremetal: beginnings of keyboard map
First keypress is detected, but we need to ack it somehow.
Diffstat (limited to 'baremetal')
| -rw-r--r-- | baremetal/boot.hex | 53 |
1 files changed, 37 insertions, 16 deletions
diff --git a/baremetal/boot.hex b/baremetal/boot.hex index d3e7f135..eedaa7c0 100644 --- a/baremetal/boot.hex +++ b/baremetal/boot.hex @@ -232,24 +232,30 @@ e9 fb ff # loop forever # read keycode into eax 31 c0 # eax <- xor eax; 11/direct 000/r32/eax 000/rm32/eax e4 60 # al <- port 0x60 - # map key '1' to ascii; if eax == 2, eax = 0x31 - 3d 02 00 00 00 # compare eax with 0x02 - 75 0b # if not equal, goto epilogue - b8 31 0f 00 00 # eax <- 0x0f31 - # print eax to top-left of screen (*0xb8000) - 89 # copy r32 to rm32 - 05 # 00/mod/indirect 000/r32/eax 101/rm32/use-disp32 - # disp32 - 00 80 0b 00 + # eax <- *(keyboard normal map + eax) + 8a # copy m8 at rm32 to r8 + 80 # 10/*+disp32 000/r8/al 000/rm32/eax + 00 80 00 00 # disp32 + # store eax in 'keyboard buffer' + 89 # copy rm32 to r32 + 05 # 00/indirect 000/r32/eax 101/rm32/use-disp32 + 30 70 00 00 # disp32 # epilogue 61 # pop all registers fb # enable interrupts cf # iret # padding -# 12f: - 00 -00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +# 129: + 00 00 00 00 00 00 00 + +# 130: +# keyboard buffer +00 00 00 00 + +# padding +# 134: + 00 00 00 00 00 00 00 00 00 00 00 00 # 140: # video mode info: @@ -386,10 +392,25 @@ e9 fb ff # loop forever # offset 400 (address 0x8000): # keyboard normal map: -00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +00 +# es + 1b +# |<--- digits -------------->| - = bs + 31 32 33 34 35 36 37 38 39 30 2d 3d 08 +# offset 40f +# tb q w e r t y u i o p [ ] + 09 71 77 65 72 74 79 75 69 6f 70 5b 5d +# offset 41c +# enter + 0a 00 +# offset 41e +# a s d f g h j k l ; ' ` \ + 61 73 64 66 67 68 6a 6b 6c 3b 27 60 00 5c +# offset 42c +# z x c v b n m , . / + 7a 78 63 76 62 6e 6d 2c 2e 2f +# offset 436 + 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |