frater/bios-OS
Watch
1
0
Fork
You've already forked bios-OS
 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

add comment / corrections

Browse source
This commit is contained in:
Frater 2026-01-08 11:46:04 +01:00
commit 3a7382c761
8 changed files with 247 additions and 41 deletions
Download patch file Download diff file Expand all files Collapse all files

23
src/drivers/debug.asm
View file

@ -1,4 +1,25 @@
; =============================================================================
; 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:

24
src/drivers/gfx.asm
View file

@ -1,3 +1,27 @@
; =============================================================================
; Project : Custom BIOS / ROM
; File : boot.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/>.
;
; =============================================================================
%define GFX_MODE 0x06 ; MCGA HiRes (B/W)
%define GFX_WIDTH 640
%define GFX_HEIGHT 200

104
src/drivers/gfx_cgam.asm
View file

@ -1,6 +1,31 @@
; =============================================================================
; Project : Custom BIOS / ROM
; File : gfx_cgam.asm
; Author : frater
; Created : 06 jan 2026
;
; graphics drivers for CGA 640x200x2
; 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/>.
;
; =============================================================================
;
; graphics drivers pour carte video/mode CGA-Mono (640x200x2)
;
%define VIDEO_SEG 0xB800 ; ou 0xB000
%define GFX_MODE 0x06 ; MCGA HiRes (B/W)
%define GFX_WIDTH 640
%define GFX_HEIGHT 200
@ -9,8 +34,12 @@
%define CGA_ODD_BANK 0x2000
%define BG16_SIZE 48
; ce mode est entrelacé, un bit/pixel, 8 pixels par octet
; ------------------------------------------------------------
; initialise le mode graphique (via l'int 10h)
;
; ce mode est entrelacé, un bit/pixel, 8 pixels par octet
; ------------------------------------------------------------
gfx_init:
; init graphics mode
mov ah, 0x00 ; AH=00h set video mode
@ -21,17 +50,72 @@ gfx_init:
ret
; PutPixel(x=cx, y=dx, color=al) sur page bh
; ------------------------------------------------------------
; Dessine un pixel, accès VRAM direct.
;
; In:
; CX = x (0..639)
; DX = y (0..199)
; AL = color (0=black, !=0=white)
;
; ------------------------------------------------------------
gfx_putpixel:
mov ah, 0Ch
;mov al, 0Fh ; couleur (0..15)
;mov bh, 00h ; page
;mov cx, 100 ; x
;mov dx, 50 ; y
int 10h
push bx
push di
push es
mov ax, VIDEO_SEG
mov es, ax
; DI = (y>>1)*80 + (x>>3) + (y&1)*0x2000
mov bx, dx
and bx, 1 ; BX = y&1
mov ax, dx
shr ax, 1 ; AX = y>>1
mov di, ax
mov ax, di
mov di, CGA_STRIDE
mul di ; DX:AX = (y>>1)*80
mov di, ax
test bx, 1
jz .bank_ok
add di, CGA_ODD_BANK
.bank_ok:
mov ax, cx
shr ax, 3 ; AX = x>>3
add di, ax
; masque bit = 0x80 >> (x&7)
mov bl, cl
and bl, 7 ; BL = x&7
mov ah, 080h
mov cl, bl
shr ah, cl ; AH = bitmask
; write
cmp al, 0
je .clear
.set:
or byte [es:di], ah
jmp .done
.clear:
not ah
and byte [es:di], ah
.done:
pop es
pop di
pop bx
ret
; draw background pattern
; ------------------------------------------------------------
; Dessine un background "check-board", accès VRAM direct.
;
; ------------------------------------------------------------
gfx_background:
mov ax,VIDEO_SEG
mov es,ax

26
src/drivers/mouse_ps2.asm
View file

@ -1,5 +1,29 @@
; =============================================================================
; Project : Custom BIOS / ROM
; File : mouse_ps2.asm
; Author : frater
; Created : 06 jan 2026
;
; controlleur de souris via le i8042 (PC Classique)
; 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/>.
;
; =============================================================================
;
; controleur de souris via le i8042 (PC Classique)
;
%define PS2_PORT_BUFFER 0x60

23
src/drivers/textmode.asm
View file

@ -1,3 +1,26 @@
; =============================================================================
; Project : Custom BIOS / ROM
; File : textmode.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/>.
;
; =============================================================================
;
; text mod functions
;