Mouse interrupt handler + debug
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Frater
parent
c97c844329
commit
4cf1a0b7a2
6 changed files with 389 additions and 235 deletions
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@ -1,127 +0,0 @@
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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
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int 10h
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ret
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; AL = 0..15 -> print hex digit
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scr_puthex4:
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and al, 0Fh ; mask 4 bits low
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cmp al, 9 ; is it 0..9 ?
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jbe .num ; yes
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add al, 'A' - 10 ; convert to 'A'..'F'
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jmp .pout
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.num:
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add al, '0' ; convert to '0'..'9'
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.pout:
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mov ah, 0x0E
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int 10h
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ret
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; AL = byte -> print 2 hex digits
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scr_puthex8:
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push ax
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push bx
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mov bl, al ; save al
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shr al, 4 ; 4 bits plus significatifs
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call scr_puthex4
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mov al, bl ; restore al
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call scr_puthex4
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pop bx
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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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scr_puthex16:
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push ax
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mov al, ah
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call scr_puthex8
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pop ax
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call scr_puthex8
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ret
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@ -66,6 +66,9 @@ mouse_reset:
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; experiemntal
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mov byte [fs:BDA_MOUSE + mouse.wheel],0
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; debug
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mov byte [fs:BDA_MOUSE + mouse.blinker],0
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ret
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; ------------------------------------------------------------
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@ -85,6 +88,7 @@ mouse_init:
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call ps2_wait_ready_write
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mov al, I8042_CMD_DIS_MOUSE ; Disable Mouse
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out i8042_PS2_CTRL, al
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; Vider tout ce qui traîne
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call ps2_flush_output
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; Activer le port souris (AUX)
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@ -283,6 +287,8 @@ isr_mouse_handler:
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; lire un octet depuis le contrôleur et le stocker dans le buffer
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in al, i8042_PS2_DATA ; lire octet souris
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inc byte [BDA_MOUSE + mouse.blinker]
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movzx bx, byte [BDA_MOUSE + mouse.idx]
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mov byte [BDA_MOUSE + mouse.buffer + bx], al
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inc byte [BDA_MOUSE + mouse.idx]
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@ -323,6 +329,32 @@ isr_mouse_handler:
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.y_pos:
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sub [BDA_MOUSE + mouse.y], ax
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; --- CLAMPING X ---
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; Check minimum (0)
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cmp word [fs:BDA_MOUSE + mouse.x], 0
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jge .check_x_max
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mov word [fs:BDA_MOUSE + mouse.x], 0
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jmp .done_x
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.check_x_max:
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; Check maximum (e.g., 639 for graphics, or pixel width)
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cmp word [fs:BDA_MOUSE + mouse.x], GFX_WIDTH-1 ; Replace with variable or define
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jle .done_x
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mov word [fs:BDA_MOUSE + mouse.x], GFX_WIDTH-1
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.done_x:
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; --- CLAMPING Y ---
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; Check minimum (0)
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cmp word [fs:BDA_MOUSE + mouse.y], 0
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jge .check_y_max
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mov word [fs:BDA_MOUSE + mouse.y], 0
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jmp .done_y
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.check_y_max:
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; Check maximum
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cmp word [fs:BDA_MOUSE + mouse.y], GFX_HEIGHT-1 ; Replace with variable or define
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jle .done_y
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mov word [fs:BDA_MOUSE + mouse.y], GFX_HEIGHT-1
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.done_y:
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; check si il y a un 4eme byte a traiter
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mov al, [BDA_MOUSE + mouse.packetlen]
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cmp al,4
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