Mouse interrupt handler + debug
This commit is contained in:
Frater
parent
c97c844329
commit
4cf1a0b7a2
6 changed files with 389 additions and 235 deletions
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@ -58,6 +58,7 @@ struc mouse
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.buffer resb 4 ; i8042 input buffer 0..3
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.idx resb 1 ; index in the buffer 4
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.packetlen resb 1 ; max buffer len (3 ou 4) 5
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.blinker resb 1 ;
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.status resb 1 ; mouse status (button etc) 6
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.wheel resb 1 ; if a packet size is 4; experimental 7
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@ -85,11 +86,7 @@ struc gfx
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.cur_y resw 1
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.cur_offset resw 1 ; offset calculé pour le prochain caractère
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.cur_line_ofs resw 1 ; "interligne" +2000h ou -2000h
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; .cur_xbyte resb 1 ; x>>3 (0..79)
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.cur_shift resb 1 ; x&7 (0..7)
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; .cur_parity resb 1
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; .cur_color resb 1 ; 0 = texte en noir, autre = texte en blanc
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; .cur_trans resb 1 ; 0 = fond transparent, autre = fond inversé .txt_color
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.cur_mode resb 1 ;
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endstruc
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228
src/boot.asm
228
src/boot.asm
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@ -20,158 +20,178 @@
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;
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; =============================================================================
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bits 16
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bits 16
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; ---------------------------------------------------------------------------
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;
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; configuration du bios
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;
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; ---------------------------------------------------------------------------
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%define DEBUG_PORT 0xe9 ; 0x402 ou 0xe9
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%define DEBUG_PORT 0xe9 ; 0x402 ou 0xe9
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; initial stack
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%define STACK_SEG 0x0800 ; segment de base
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%define STACK_SEG 0x0800 ; segment de base
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;section .text
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; bits 16
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;
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; db 'EXTRA CODE Section',0
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;
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; times 0xFFFF - ($ - $$) db 0xFF
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section .text
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bits 16
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;%include "./common/chartable.asm"
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;%include "./common/cursor.asm"
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;%include "./common/chartable.asm"
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;%include "./common/cursor.asm"
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; definition du BDA
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%include "./bda.asm"
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%include "./bda.asm"
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; %include "./services/macros.asm"
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%include "./drivers/debug.asm"
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%include "./drivers/gfx_cgam.asm"
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%include "./drivers/mouse_ps2.asm"
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%include "./drivers/keyboard_ps2.asm"
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%include "./services/generic.asm"
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; %include "./services/macros.asm"
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%include "./common/debug_cga.asm"
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%include "./drivers/gfx_cgam.asm"
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%include "./drivers/mouse_ps2.asm"
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%include "./drivers/keyboard_ps2.asm"
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%include "./services/generic.asm"
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err_vganok db 'VGA Not Initialized',0
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err_vganok db 'VGA Not Initialized',0
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cpt_txt db '0123456789A123456789B123456789C123456789D123456789E123456789F123456789G123456789',0
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helloworld db 'Hello World !',0
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centre db 'TEXTEAUCENTR',0
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cpt_txt db '0123456789A123456789B123456789C123456789D123456789E123456789F123456789G123456789',0
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helloworld db 'Hello World !',0
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centre db 'TEXTEAUCENTR',0
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reset:
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cli
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; il n'existe aucun 'stack' par défaut
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mov ax, STACK_SEG
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mov ss, ax
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mov sp, 0xFFFE ; haut du segment (64ko de stack), mot-aligné
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cld
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cli
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; il n'existe aucun 'stack' par défaut
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mov ax, STACK_SEG
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mov ss, ax
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mov sp, 0xFFFE ; haut du segment (64ko de stack), mot-aligné
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cld
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; installé une table d'interruption "dummy"
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call ivt_setup
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call bda_setup
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; installé une table d'interruption "dummy"
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call ivt_setup
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call bda_setup
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; Install IRQ 0 : timer_isr
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mov ax,cs
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mov dx,ax
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mov bx,timer_isr
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mov ax,i8259_MASTER_INT
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; Install IRQ 0 : timer_isr
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mov ax,cs
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mov dx,ax
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mov bx,timer_isr
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mov ax,i8259_MASTER_INT
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call ivt_setvector
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call ivt_setvector
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; initialisation des PIC 8259A
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call pic_init
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; initialisation des PIC 8259A
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call pic_init
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; load Roms
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call setup_load_rom
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; load Roms
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call setup_load_rom
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; on vérifie que le BIOS VGA a installé une INT 10h
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call setup_check_vga
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; on vérifie que le BIOS VGA a installé une INT 10h
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call setup_check_vga
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; on initialise le mode texte 80x25 par défaut DEBUG
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;mov ax, 0x0003
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;int 10h
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; enable IRQ 0
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mov ah,IRQ_ENABLED
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mov al,0
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call pic_set_irq_mask
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; enable IRQ 0
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mov ah,IRQ_ENABLED
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mov al,0
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call pic_set_irq_mask
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call kbd_init
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sti
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call kbd_init
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sti
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; on active le mode graphique
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GFX_DRV GFX_INIT
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; on active le mode graphique
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GFX_DRV GFX_INIT
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mov cx, 300
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mov dx, 102
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GFX_DRV GFX_GOTOXY
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mov cx, 300
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mov dx, 102
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GFX_DRV GFX_GOTOXY
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GFX_SET_WRTIE_MODE GFX_TXT_WHITE_TRANSPARENT
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GFX_SET_WRTIE_MODE GFX_TXT_WHITE_TRANSPARENT
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push cs
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pop ds
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mov si, centre
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GFX_DRV GFX_WRITE
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push cs
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pop ds
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mov si, centre
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GFX_DRV GFX_WRITE
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; call mouse_reset
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call mouse_init
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; call mouse_reset
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call mouse_init
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GFX_DRV GFX_CRS_UPDATE
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GFX_DRV GFX_CRS_UPDATE
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GFX_SET_WRTIE_MODE GFX_TXT_BLACK_ON_WHITE
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GFX_SET_WRTIE_MODE GFX_TXT_BLACK_ON_WHITE
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xor cx,cx
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mov dx,0
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GFX_DRV GFX_GOTOXY
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xor cx,cx
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mov dx,0
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GFX_DRV GFX_GOTOXY
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push cs
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pop ds
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mov si, cpt_txt
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GFX_DRV GFX_WRITE
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push cs
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pop ds
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mov si, cpt_txt
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GFX_DRV GFX_WRITE
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GFX_SET_WRTIE_MODE GFX_TXT_WHITE_TRANSPARENT
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GFX_SET_WRTIE_MODE GFX_TXT_WHITE_TRANSPARENT
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mov cx,8
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mov dx,8
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GFX_DRV GFX_GOTOXY
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mov cx,8
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mov dx,8
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GFX_DRV GFX_GOTOXY
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mov si, helloworld
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GFX_DRV GFX_WRITE
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mov si, helloworld
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GFX_DRV GFX_WRITE
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mov cx,8
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mov dx,24
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GFX_SET_WRTIE_MODE 0
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mov cx,8
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mov dx,24
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GFX_SET_WRTIE_MODE 0
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.loopshift:
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GFX_DRV GFX_GOTOXY
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mov si, helloworld
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GFX_DRV GFX_WRITE
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add dx,8
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inc cx
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cmp cx,16
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jbe .loopshift
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GFX_DRV GFX_GOTOXY
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mov si, helloworld
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GFX_DRV GFX_WRITE
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add dx,8
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inc cx
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cmp cx,16
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jbe .loopshift
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mov ax,BDA_DATA_SEG
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mov ds,ax
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endless:
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mov ax,BDA_DATA_SEG
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mov ds,ax
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mov ax,0
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xor cx,cx
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mov dx,180
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GFX_DRV GFX_GOTOXY
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jmp endless
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mov ax, [BDA_MOUSE + mouse.x]
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call print_word_hex
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mov al,' '
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call cga_putc
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mov ax, [BDA_MOUSE + mouse.y]
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call print_word_hex
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mov al,' '
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call cga_putc
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xor ah,ah
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mov al, [BDA_MOUSE + mouse.blinker]
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call print_word_hex
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jmp endless
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; -----------------------------------------------------------
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; timer ISR (IRQ -> INT)
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; -----------------------------------------------------------
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timer_isr:
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push ax
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push ax
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push fs
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mov ax,BDA_DATA_SEG
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mov fs,ax
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push fs
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mov ax,BDA_DATA_SEG
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mov fs,ax
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; inc byte [fs:BDA_TIMER]
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mov al, PIC_EOI ; EOI master
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out i8259_MASTER_CMD, al
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pop fs
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mov al, PIC_EOI ; EOI master
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out i8259_MASTER_CMD, al
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pop fs
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pop ax
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iret
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pop ax
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iret
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; ------------------------------------------------------------------
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; Padding jusqu'au reset vector
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@ -181,16 +201,16 @@ times 0xFFF0 - ($ - $$) db 0xFF
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; ------------------------------------------------------------------
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; RESET VECTOR (exécuté par le CPU)
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; ------------------------------------------------------------------
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section .resetvect
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section .resetvect
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bits 16
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global reset_vector
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global reset_vector
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reset_vector:
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; code minimal au reset
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jmp 0xF000:reset
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; code minimal au reset
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jmp 0xF000:reset
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builddate:
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db '06/01/2026'
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times 16-($-$$) db 0 ; le stub tient dans 16 octets (ou moins)
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db '06/01/2026'
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times 16-($-$$) db 0 ; le stub tient dans 16 octets (ou moins)
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105
src/common/debug_cga.asm
Normal file
105
src/common/debug_cga.asm
Normal file
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@ -0,0 +1,105 @@
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; =============================================================================
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; Project : Custom BIOS / ROM
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; File : cga_debug.asm
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; Author : frater
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;
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; License : GNU General Public License v3.0 or later (GPL-3.0+)
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;
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; This program is free software: you can redistribute it and/or modify
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; it under the terms of the GNU General Public License as published by
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; the Free Software Foundation, either version 3 of the License, or
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; (at your option) any later version.
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;
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; This program is distributed in the hope that it will be useful,
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; but WITHOUT ANY WARRANTY; without even the implied warranty of
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; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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; GNU General Public License for more details.
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;
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; You should have received a copy of the GNU General Public License
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; along with this program. If not, see <https://www.gnu.org/licenses/>.
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;
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; =============================================================================
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; =============================================================================
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; Fonction : dump_ram_words
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; Description : Lit des mots (16 bits) depuis DS:SI et les affiche en Hexa
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; Entrées :
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; DS:SI = Adresse de départ en RAM
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; CX = Nombre de mots (words) à lire et afficher
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; =============================================================================
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dump_ram_words:
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jcxz .done ; Sécurité : si CX=0, on sort
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.loop:
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lodsw ; Charge [DS:SI] dans AX et incrémente SI de 2
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; Note: x86 est Little Endian. Si RAM = 12 34,
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; AX vaudra 0x3412.
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push cx ; Sauvegarde le compteur de boucle principal
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push si ; Sauvegarde le pointeur (si cga_putc le modifie)
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call print_word_hex ; Affiche AX sous forme "XXXX"
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; (Optionnel) Ajouter un espace entre chaque mot pour la lisibilité
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mov al, ' '
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call cga_putc
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pop si ; Restaure SI
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pop cx ; Restaure CX
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loop .loop ; Décrémente CX et boucle si != 0
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.done:
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ret
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; =============================================================================
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; Fonction : print_word_hex
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; Description : Convertit AX en 4 caractères Hexa et les affiche
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; Entrée : AX = Valeur 16 bits (ex: 0x1A2B)
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; Sortie : Affiche "1A2B" via cga_putc
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; =============================================================================
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print_word_hex:
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push ax ; Sauvegarde AX car on va le modifier (rotation)
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push cx
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push bx
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mov cx, 4 ; 4 caractères hex dans un mot de 16 bits
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.next_digit:
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; On veut afficher les bits 12-15 d'abord.
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; L'astuce est de faire une rotation à gauche de 4 bits.
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; Le quartet de poids fort se retrouve en bas (bits 0-3).
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rol ax, 4
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mov bx, ax ; Copie temporaire
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and bl, 0x0F ; On isole les 4 derniers bits (0 à 15)
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mov al, bl ; AL contient la valeur numérique (0-15)
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call nibble_to_ascii ; Convertit AL en caractère ASCII
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call cga_putc ; Affiche le caractère
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loop .next_digit ; Répète 4 fois
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pop bx
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pop cx
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pop ax ; Restaure l'état original de AX
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ret
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; =============================================================================
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; Fonction : nibble_to_ascii
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; Description : Convertit les 4 bits de poids faible de AL en ASCII Hex
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; Entrée : AL (valeur 0-15)
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; Sortie : AL (caractère '0'-'9' ou 'A'-'F')
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; =============================================================================
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nibble_to_ascii:
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cmp al, 9
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ja .letter ; Si > 9, c'est une lettre (A-F)
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add al, '0' ; Sinon c'est un chiffre : 0x0 -> '0'
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ret
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.letter:
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add al, 'A' - 10 ; Convertit 10 -> 'A', 11 -> 'B', etc.
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ret
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127
src/common/debug_txt.asm
Normal file
127
src/common/debug_txt.asm
Normal file
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@ -0,0 +1,127 @@
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; =============================================================================
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; Project : Custom BIOS / ROM
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; File : debug.asm
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; Author : frater
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; Created : 06 jan 2026
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;
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; License : GNU General Public License v3.0 or later (GPL-3.0+)
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;
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; This program is free software: you can redistribute it and/or modify
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; it under the terms of the GNU General Public License as published by
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; the Free Software Foundation, either version 3 of the License, or
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; (at your option) any later version.
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;
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; This program is distributed in the hope that it will be useful,
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; but WITHOUT ANY WARRANTY; without even the implied warranty of
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; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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; GNU General Public License for more details.
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;
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; You should have received a copy of the GNU General Public License
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; along with this program. If not, see <https://www.gnu.org/licenses/>.
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;
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; =============================================================================
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debug_puts:
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.next:
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push dx
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mov dx, DEBUG_PORT
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lodsb ; AL = *SI++
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test al, al
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jz .done
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out dx, al
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jmp .next
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.done:
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pop dx
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ret
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debug_putc:
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push dx
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mov dx, DEBUG_PORT
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out dx, al
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pop dx
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ret
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; AL = 0..15 -> print hex digit
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debug_puthex4:
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and al, 0Fh
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cmp al, 9
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jbe .num
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add al, 'A' - 10
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jmp .pout
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.num:
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add al, '0'
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.pout:
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call debug_putc
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ret
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; AL = byte -> print 2 hex digits
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debug_puthex8:
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push ax
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mov ah, al
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shr al, 4
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call debug_puthex4
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mov al, ah
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call debug_puthex4
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pop ax
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ret
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; AX = word -> print 4 hex digits
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debug_puthex16:
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push ax
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mov al, ah
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call debug_puthex8
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pop ax
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call debug_puthex8
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ret
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; --- screen text functions ---
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; AH = page
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; DH = row
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; DL = column
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scr_gotoxy:
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mov ah, 02h
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mov bh, 0 ; page 0
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int 10h
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ret
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scr_putc:
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mov ah, 0x0E
|
||||
int 10h
|
||||
ret
|
||||
|
||||
; AL = 0..15 -> print hex digit
|
||||
scr_puthex4:
|
||||
and al, 0Fh ; mask 4 bits low
|
||||
cmp al, 9 ; is it 0..9 ?
|
||||
jbe .num ; yes
|
||||
add al, 'A' - 10 ; convert to 'A'..'F'
|
||||
jmp .pout
|
||||
.num:
|
||||
add al, '0' ; convert to '0'..'9'
|
||||
.pout:
|
||||
mov ah, 0x0E
|
||||
int 10h
|
||||
ret
|
||||
|
||||
; AL = byte -> print 2 hex digits
|
||||
scr_puthex8:
|
||||
push ax
|
||||
push bx
|
||||
mov bl, al ; save al
|
||||
shr al, 4 ; 4 bits plus significatifs
|
||||
call scr_puthex4
|
||||
mov al, bl ; restore al
|
||||
call scr_puthex4
|
||||
pop bx
|
||||
pop ax
|
||||
ret
|
||||
|
||||
; AX = word -> print 4 hex digits
|
||||
scr_puthex16:
|
||||
push ax
|
||||
mov al, ah
|
||||
call scr_puthex8
|
||||
pop ax
|
||||
call scr_puthex8
|
||||
ret
|
||||
|
|
@ -1,127 +0,0 @@
|
|||
; =============================================================================
|
||||
; Project : Custom BIOS / ROM
|
||||
; File : debug.asm
|
||||
; Author : frater
|
||||
; Created : 06 jan 2026
|
||||
;
|
||||
; License : GNU General Public License v3.0 or later (GPL-3.0+)
|
||||
;
|
||||
; This program is free software: you can redistribute it and/or modify
|
||||
; it under the terms of the GNU General Public License as published by
|
||||
; the Free Software Foundation, either version 3 of the License, or
|
||||
; (at your option) any later version.
|
||||
;
|
||||
; This program is distributed in the hope that it will be useful,
|
||||
; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
; GNU General Public License for more details.
|
||||
;
|
||||
; You should have received a copy of the GNU General Public License
|
||||
; along with this program. If not, see <https://www.gnu.org/licenses/>.
|
||||
;
|
||||
; =============================================================================
|
||||
|
||||
debug_puts:
|
||||
.next:
|
||||
push dx
|
||||
mov dx, DEBUG_PORT
|
||||
lodsb ; AL = *SI++
|
||||
test al, al
|
||||
jz .done
|
||||
out dx, al
|
||||
jmp .next
|
||||
.done:
|
||||
pop dx
|
||||
ret
|
||||
|
||||
debug_putc:
|
||||
push dx
|
||||
mov dx, DEBUG_PORT
|
||||
out dx, al
|
||||
pop dx
|
||||
ret
|
||||
|
||||
; AL = 0..15 -> print hex digit
|
||||
debug_puthex4:
|
||||
and al, 0Fh
|
||||
cmp al, 9
|
||||
jbe .num
|
||||
add al, 'A' - 10
|
||||
jmp .pout
|
||||
.num:
|
||||
add al, '0'
|
||||
.pout:
|
||||
call debug_putc
|
||||
ret
|
||||
|
||||
; AL = byte -> print 2 hex digits
|
||||
debug_puthex8:
|
||||
push ax
|
||||
mov ah, al
|
||||
shr al, 4
|
||||
call debug_puthex4
|
||||
mov al, ah
|
||||
call debug_puthex4
|
||||
pop ax
|
||||
ret
|
||||
|
||||
; AX = word -> print 4 hex digits
|
||||
debug_puthex16:
|
||||
push ax
|
||||
mov al, ah
|
||||
call debug_puthex8
|
||||
pop ax
|
||||
call debug_puthex8
|
||||
ret
|
||||
|
||||
|
||||
; --- screen text functions ---
|
||||
; AH = page
|
||||
; DH = row
|
||||
; DL = column
|
||||
scr_gotoxy:
|
||||
mov ah, 02h
|
||||
mov bh, 0 ; page 0
|
||||
int 10h
|
||||
ret
|
||||
|
||||
scr_putc:
|
||||
mov ah, 0x0E
|
||||
int 10h
|
||||
ret
|
||||
|
||||
; AL = 0..15 -> print hex digit
|
||||
scr_puthex4:
|
||||
and al, 0Fh ; mask 4 bits low
|
||||
cmp al, 9 ; is it 0..9 ?
|
||||
jbe .num ; yes
|
||||
add al, 'A' - 10 ; convert to 'A'..'F'
|
||||
jmp .pout
|
||||
.num:
|
||||
add al, '0' ; convert to '0'..'9'
|
||||
.pout:
|
||||
mov ah, 0x0E
|
||||
int 10h
|
||||
ret
|
||||
|
||||
; AL = byte -> print 2 hex digits
|
||||
scr_puthex8:
|
||||
push ax
|
||||
push bx
|
||||
mov bl, al ; save al
|
||||
shr al, 4 ; 4 bits plus significatifs
|
||||
call scr_puthex4
|
||||
mov al, bl ; restore al
|
||||
call scr_puthex4
|
||||
pop bx
|
||||
pop ax
|
||||
ret
|
||||
|
||||
; AX = word -> print 4 hex digits
|
||||
scr_puthex16:
|
||||
push ax
|
||||
mov al, ah
|
||||
call scr_puthex8
|
||||
pop ax
|
||||
call scr_puthex8
|
||||
ret
|
||||
|
|
@ -66,6 +66,9 @@ mouse_reset:
|
|||
|
||||
; experiemntal
|
||||
mov byte [fs:BDA_MOUSE + mouse.wheel],0
|
||||
|
||||
; debug
|
||||
mov byte [fs:BDA_MOUSE + mouse.blinker],0
|
||||
ret
|
||||
|
||||
; ------------------------------------------------------------
|
||||
|
|
@ -85,6 +88,7 @@ mouse_init:
|
|||
call ps2_wait_ready_write
|
||||
mov al, I8042_CMD_DIS_MOUSE ; Disable Mouse
|
||||
out i8042_PS2_CTRL, al
|
||||
|
||||
; Vider tout ce qui traîne
|
||||
call ps2_flush_output
|
||||
; Activer le port souris (AUX)
|
||||
|
|
@ -283,6 +287,8 @@ isr_mouse_handler:
|
|||
; lire un octet depuis le contrôleur et le stocker dans le buffer
|
||||
in al, i8042_PS2_DATA ; lire octet souris
|
||||
|
||||
inc byte [BDA_MOUSE + mouse.blinker]
|
||||
|
||||
movzx bx, byte [BDA_MOUSE + mouse.idx]
|
||||
mov byte [BDA_MOUSE + mouse.buffer + bx], al
|
||||
inc byte [BDA_MOUSE + mouse.idx]
|
||||
|
|
@ -323,6 +329,32 @@ isr_mouse_handler:
|
|||
.y_pos:
|
||||
sub [BDA_MOUSE + mouse.y], ax
|
||||
|
||||
; --- CLAMPING X ---
|
||||
; Check minimum (0)
|
||||
cmp word [fs:BDA_MOUSE + mouse.x], 0
|
||||
jge .check_x_max
|
||||
mov word [fs:BDA_MOUSE + mouse.x], 0
|
||||
jmp .done_x
|
||||
.check_x_max:
|
||||
; Check maximum (e.g., 639 for graphics, or pixel width)
|
||||
cmp word [fs:BDA_MOUSE + mouse.x], GFX_WIDTH-1 ; Replace with variable or define
|
||||
jle .done_x
|
||||
mov word [fs:BDA_MOUSE + mouse.x], GFX_WIDTH-1
|
||||
.done_x:
|
||||
|
||||
; --- CLAMPING Y ---
|
||||
; Check minimum (0)
|
||||
cmp word [fs:BDA_MOUSE + mouse.y], 0
|
||||
jge .check_y_max
|
||||
mov word [fs:BDA_MOUSE + mouse.y], 0
|
||||
jmp .done_y
|
||||
.check_y_max:
|
||||
; Check maximum
|
||||
cmp word [fs:BDA_MOUSE + mouse.y], GFX_HEIGHT-1 ; Replace with variable or define
|
||||
jle .done_y
|
||||
mov word [fs:BDA_MOUSE + mouse.y], GFX_HEIGHT-1
|
||||
.done_y:
|
||||
|
||||
; check si il y a un 4eme byte a traiter
|
||||
mov al, [BDA_MOUSE + mouse.packetlen]
|
||||
cmp al,4
|
||||
|
|
|
|||
Loading…
Reference in a new issue