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This commit is contained in:
Frater 2026-01-15 08:58:56 +01:00
commit ccf3ae1dd1
6 changed files with 144 additions and 39 deletions
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32
src/bda.asm
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@ -70,8 +70,6 @@
%define BDA_CURSOR_PTR 0x001B ; pointeur vers l'image du curseur
%define BDA_CURSOR_BG 0x0020 ; 48 bytes max (3*16)
; -----------------------------------------------------------------------------------
; PC components I/O ports
; -----------------------------------------------------------------------------------
@ -84,4 +82,32 @@
%define i8259_MASTER_CMD 0x20
%define i8259_MASTER_DATA 0x21
%define i8259_SLAVE_CMD 0xA0
%define i8259_SLAVE_DATA 0xA1
%define i8259_SLAVE_DATA 0xA1
; -----------------------------------------------------------------------------------
; bda_setup
; Initialise la BDA à zéro
; -----------------------------------------------------------------------------------
bda_setup:
pusha
push ds
mov ax, BDA_SEGMENT
mov es, ax
mov ax, 0
mov cx,0xFF
xor di, di
rep stosb ; clear BDA area
mov ax, BDA_MOUSE_SEG
mov es, ax
mov ax, 0
mov cx,0xFF
xor di, di
rep stosb ; clear BDA area
pop ds
popa
ret