nivirx/stevia
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use gs for vesa framebuffer (was fs)

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Elaina Claus
2024-10-08 20:23:16 -04:00
parent 13ff42a7d1
commit d88b1bcb70
1 changed files with 4 additions and 5 deletions
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9
include/util/error_func.nasm
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@@ -30,10 +30,6 @@
; pass error as ascii character in al, errors a-zA-Z or 0-9 ; pass error as ascii character in al, errors a-zA-Z or 0-9
ALIGN 4, db 0x90 ALIGN 4, db 0x90
error: error:
; fs = 0xb800 => fs:0x0000 = 0xb8000
mov dx, 0xB800
mov fs, dx ; F segment to 0xB800 = video memory
cmp al, STEVIA_DEBUG_OK cmp al, STEVIA_DEBUG_OK
jge short .debug ; the 'letter >= W' (W, X, Y, Z) are used as special debug codes jge short .debug ; the 'letter >= W' (W, X, Y, Z) are used as special debug codes
mov ah, 0x4F ; color 0x4F is white text/red background mov ah, 0x4F ; color 0x4F is white text/red background
@@ -41,8 +37,11 @@ error:
.debug: .debug:
mov ah, 0x5F ; debug case is white text/purple background mov ah, 0x5F ; debug case is white text/purple background
.print: .print:
mov word [fs:0x0000], ax mov dx, 0xB800
mov gs, dx
mov word [gs:0x0000], ax ; 0xB8000 = video memory
.halt: .halt:
cli
hlt hlt
jmp short .halt jmp short .halt