199 lines
4.8 KiB
NASM
199 lines
4.8 KiB
NASM
; =============================================================================
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; Project : Custom BIOS / ROM
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; File : boot.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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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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; initial stack
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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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; definition du BDA
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%include "./common/bda.asm"
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%include "./common/debug_cga.asm"
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%include "./drivers/gfx_cgam.asm"
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%include "./services/gui_lib.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/gui_window.asm"
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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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; 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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call ivt_setvector
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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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; on vérifie que le BIOS VGA a installé une INT 10h
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call setup_check_vga
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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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; on active le mode graphique
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GFX INIT
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call mouse_init
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GFX MOUSE_MOVE
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GFX MOUSE_SHOW
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push cs
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pop ds
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; Init du système GUI
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call gui_init_system
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call build_interface
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main_loop:
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; 2. Moteur GUI (Gère tout : Loop, HitTest, Draw, Callbacks)
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; DS pointe déjà sur GUI_RAM_SEG
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call gui_process_all
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; 3. Afficher souris
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; GFX MOUSE_MOVE
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jmp main_loop
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; --- Callbacks (Fonctions appelées par le moteur) ---
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on_click_quit:
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hlt
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jmp on_click_quit
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build_interface:
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; --- CRÉATION DYNAMIQUE DES BOUTONS ---
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; On reste dans CS pour lire les arguments,
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; mais on configure DS=GUI_RAM_SEG pour l'allocation
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; Créer Bouton 1 "QUITTER"
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call gui_alloc_widget ; Retourne SI = Pointeur nouveau slot
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jc .mem_full
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; Remplir les propriétés
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mov word [gs:si + widget.x], 10
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mov word [gs:si + widget.y], 10
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mov word [gs:si + widget.w], 80
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mov word [gs:si + widget.h], 20
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mov word [gs:si + widget.text_ofs], str_quit
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mov word [gs:si + widget.text_seg], cs ; Texte est dans la ROM
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mov word [gs:si + widget.event_click], on_click_quit ; Fonction à appeler
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; Créer Bouton 2 "HELLO"
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call gui_alloc_widget
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jc .mem_full
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mov word [gs:si + widget.x], 100
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mov word [gs:si + widget.y], 50
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mov word [gs:si + widget.w], 80
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mov word [gs:si + widget.h], 20
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mov word [gs:si + widget.text_ofs], str_hello
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mov word [gs:si + widget.text_seg], cs
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; Pas de callback
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.mem_full:
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ret
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; --- Données ROM ---
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str_quit db "QUITTER", 0
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str_hello db "HELLO", 0
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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 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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pop ax
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iret
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; ------------------------------------------------------------------
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; Padding jusqu'au reset vector
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; ------------------------------------------------------------------
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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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bits 16
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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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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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