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| author | Kartik Agaram <vc@akkartik.com> | 2021-01-24 19:38:10 -0800 |
|---|---|---|
| committer | Kartik Agaram <vc@akkartik.com> | 2021-01-24 20:16:27 -0800 |
| commit | 3844651e49258a400ed81273f7cd620a14264386 (patch) | |
| tree | ec050e286314f49945dd0b3f97e4aa839b1a67f5 /baremetal/103grapheme.subx | |
| parent | 1c77be68d75d8134bea72305057eb9ce523e9748 (diff) | |
| download | mu-3844651e49258a400ed81273f7cd620a14264386.tar.gz | |
7559 - reorganize sectors built in raw hex
This was tedious for three reasons beyond the usual one of having to
track and update offsets several time while I debug:
- The Bochs troubles of the previous commit kept polluting my brain
even though they were irrelevant.
- I had to keep some changes locally to allow myself to use Bochs,
which polluted my working directory.
- I had to travel the long way to the realization that I'm not
actually initializing the stack anywhere. BIOS was starting my stack
off at 0x10000, which was promptly clobbered by my second read from
disk.
The good news: while I'm here I grow the interrupt descriptor table. So
I don't have to go through this exercise when I get back to supporting
the mouse.
Diffstat (limited to 'baremetal/103grapheme.subx')
| -rw-r--r-- | baremetal/103grapheme.subx | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/baremetal/103grapheme.subx b/baremetal/103grapheme.subx index 16a44fbc..841abf6c 100644 --- a/baremetal/103grapheme.subx +++ b/baremetal/103grapheme.subx @@ -25,9 +25,9 @@ draw-grapheme-on-real-screen: # g: grapheme, x: int, y: int, color: int, backgr # var letter-bitmap/esi = font[g] 8b/-> *(ebp+8) 6/r32/esi c1 4/subop/shift-left %esi 4/imm8 - 8d/copy-address *(esi+0x8800) 6/r32/esi # font-start - # if (letter-bitmap >= 0x9000) return # characters beyond ASCII currently not supported - 81 7/subop/compare %esi 0x9000/imm32 + 8d/copy-address *(esi+0x8c00) 6/r32/esi # font-start + # if (letter-bitmap >= 0x9400) return # characters beyond ASCII currently not supported + 81 7/subop/compare %esi 0x9400/imm32 7d/jump-if->= $draw-grapheme-on-real-screen:end/disp8 # var ycurr/edx: int = y*16 8b/-> *(ebp+0x10) 2/r32/edx |