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VGA - Write

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This commit is contained in:
Frater 2026-02-17 21:04:59 +01:00
commit ddc4ef393c
9 changed files with 166 additions and 149 deletions
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46
src/drivers/gfx_cgam.asm
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@ -23,7 +23,7 @@
;
; graphics drivers pour carte video/mode CGA-Mono (640x200x2)
;
%define VIDEO_SEG 0xB800 ; ou 0xB000
%define SEG_VIDEO 0xB800 ; ou 0xB000
%define GFX_MODE 0x06 ; MCGA HiRes (B/W)
%define GFX_WIDTH 640
@ -113,7 +113,7 @@ graph_driver:
; ce mode est entrelacé, un bit/pixel, 8 pixels par octet
; ------------------------------------------------------------
cga_init:
mov ax, BDA_CUSTOM_SEG
mov ax, SEG_BDA_CUSTOM
mov ds, ax
; init graphics mode
@ -132,7 +132,7 @@ cga_none:
; ------------------------------------------------------------
; Calcule DI + AH=mask pour (CX=x, DX=y) en mode CGA 640x200
;
; Out: ES=VIDEO_SEG, DI=offset, AH=bitmask (0x80 >> (x&7))
; Out: ES=SEG_VIDEO, DI=offset, AH=bitmask (0x80 >> (x&7))
; ------------------------------------------------------------
cga_calc_addr:
; calcul de l'offset 'y':
@ -180,7 +180,7 @@ cga_set_writemode:
push fs
push ax
mov ax, BDA_CUSTOM_SEG
mov ax, SEG_BDA_CUSTOM
mov fs,ax
mov ax, .mode
@ -212,7 +212,7 @@ cga_set_charpos:
pusha
push fs
mov ax,BDA_CUSTOM_SEG
mov ax,SEG_BDA_CUSTOM
mov fs,ax
; store x,y en pixel
@ -313,9 +313,9 @@ cga_putc:
call cga_mouse_hide ; Protection souris
mov bx, VIDEO_SEG
mov bx, SEG_VIDEO
mov es, bx
mov bx, BDA_CUSTOM_SEG
mov bx, SEG_BDA_CUSTOM
mov fs, bx
mov ax, .car
@ -441,7 +441,7 @@ cga_write:
;
; CX = x (0..639)
; DX = y (0..199)
; ES = Target Segment (usually VIDEO_SEG)
; ES = Target Segment (usually SEG_VIDEO)
; BL = color (0=black, !=0=white)
; ------------------------------------------------------------
; --- Définition des arguments ---
@ -453,7 +453,7 @@ cga_putpixel:
mov bp, sp
pusha
mov ax, VIDEO_SEG
mov ax, SEG_VIDEO
mov es, ax
call cga_mouse_hide ; Protection souris
@ -503,7 +503,7 @@ cga_getpixel:
mov cx, .x
mov dx, .y
mov ax, VIDEO_SEG
mov ax, SEG_VIDEO
mov es, ax
call cga_calc_addr
@ -525,7 +525,7 @@ cga_getpixel:
;
; ------------------------------------------------------------
cga_background:
mov ax,VIDEO_SEG
mov ax,SEG_VIDEO
mov es,ax
mov di,0x0000
mov eax,0xaaaaaaaa
@ -554,7 +554,7 @@ cga_line_vertical:
push es
; Setup ES = Video Segment
mov ax, VIDEO_SEG ; Utiliser AX plutot que SI pour setup ES
mov ax, SEG_VIDEO ; Utiliser AX plutot que SI pour setup ES
mov es, ax
call cga_mouse_hide
@ -637,7 +637,7 @@ cga_line_horizontal:
push es
; Setup ES = Video Segment
mov ax, VIDEO_SEG
mov ax, SEG_VIDEO
mov es, ax
call cga_mouse_hide
@ -790,7 +790,7 @@ cga_line:
je .do_vert
; --- Bresenham ---
mov ax, VIDEO_SEG
mov ax, SEG_VIDEO
mov es, ax
call cga_mouse_hide
@ -1009,7 +1009,7 @@ cga_fill_rect:
pusha
push es
mov ax, VIDEO_SEG
mov ax, SEG_VIDEO
mov es, ax
; calcul de l'offset de départ du pattern
@ -1268,7 +1268,7 @@ cga_mouse_hide:
pusha ; Sauvegarder TOUS les registres 32-bits
push ds
mov ax, BDA_CUSTOM_SEG
mov ax, SEG_BDA_CUSTOM
mov ds, ax
; Décrémenter le compteur
@ -1296,7 +1296,7 @@ cga_mouse_show:
pusha
push ds
mov ax, BDA_CUSTOM_SEG
mov ax, SEG_BDA_CUSTOM
mov ds, ax
; Incrémenter le compteur
@ -1328,7 +1328,7 @@ cga_mouse_cursor_move:
push es
; move Data Segment
mov ax, BDA_CUSTOM_SEG
mov ax, SEG_BDA_CUSTOM
mov ds, ax
cmp byte [PTR_MOUSE + mouse.cur_counter], 0
@ -1339,7 +1339,7 @@ cga_mouse_cursor_move:
mov byte [PTR_MOUSE + mouse.cur_drawing],1
mov ax, VIDEO_SEG
mov ax, SEG_VIDEO
mov es, ax
call cga_cursor_restorebg
@ -1364,7 +1364,7 @@ cga_cursor_savebg:
jne .done
push es
mov ax, VIDEO_SEG
mov ax, SEG_VIDEO
mov es, ax
; mémoriser position courante (utilisée pour restore)
@ -1410,7 +1410,7 @@ cga_cursor_restorebg:
je .done
push es
mov ax, VIDEO_SEG
mov ax, SEG_VIDEO
mov es, ax
; restaurer depuis la dernière position sauvegardée
@ -1456,9 +1456,9 @@ cga_cursor_draw:
push gs
cld ; Sécurité : Direction avant
mov ax, BDA_CUSTOM_SEG
mov ax, SEG_BDA_CUSTOM
mov ds, ax
mov ax, VIDEO_SEG
mov ax, SEG_VIDEO
mov es, ax
; --- CLIPPING VERTICAL ---