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fix mouse management

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This commit is contained in:
saintfrater 2026-01-20 14:55:09 +01:00
commit 9621566036
4 changed files with 98 additions and 88 deletions
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41
src/bda.asm
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@ -49,26 +49,31 @@
;
%define BDA_DATA_SEG 0x0050
%define BDA_MOUSE 0x0000
%define BDA_MOUSE_BUFFER 0x0000 ; dword; buffer (jusqu'à 4 octets)
%define BDA_MOUSE_IDX 0x0004 ; byte 0..3
%define DBA_MOUSE_PACKETLEN 0x0005
%define DBA_CURSOR_MASK 0x0006 ; byte pixels mask (bit per pixel)
%define BDA_MOUSE_STATUS 0x0007 ; byte
%define BDA_MOUSE_X 0x0008 ; word
%define BDA_MOUSE_Y 0x000A ; word
%define BDA_MOUSE_WHEEL 0x000C ; word
struc mouse
.buffer resb 4 ; i8042 input buffer
.idx resb 1 ; index in the buffer
.packetlen resb 1 ; max buffer len (3 ou 4)
%define BDA_CURSOR_VISIBLE 0x000E ; byte (0/1)
%define BDA_CURSOR_OLDX 0x000F ; word
%define BDA_CURSOR_OLDY 0x0011 ; word
%define BDA_CURSOR_NEWX 0x0013 ; word
%define BDA_CURSOR_NEWY 0x0015 ; word
%define BDA_CURSOR_BITOFF 0x0017 ; byte 0..7 bits d'offset (x&7)
%define BDA_CURSOR_BYTES 0x0019 ; byte 2 ou 3 bytes as source for cursor image
%define BDA_CURSOR_SAVED 0x001A ; flag if image saved
%define BDA_CURSOR_PTR 0x001B ; pointeur vers l'image du curseur
%define BDA_CURSOR_BG 0x0020 ; 48 bytes max (3*16)
.status resb 1 ; mouse status (button etc)
.wheel resb 1 ; if a packet size is 4; experimental
.x resw 1 ;
.y resw 1
; cursor management
.cur_oldx resw 1
.cur_oldy resw 1
.cur_newx resw 1
.cur_newy resw 1
.cur_visible resb 1
.cur_seg resw 1 ; segment / offset of the pointer
.cur_ofs resw 1
.cur_mask resb 1 ; pixels mask (bit per pixel)
.cur_bit_ofs resb 1 ; 0..7 bits d'offset (x&7)
.cur_bytes resb 1 ; byte 2 ou 3 bytes as source for cursor image
.bkg_saved resb 1 ; background saved
.bkg_buffer resb 48 ; buffer for saved background
endstruc
; -----------------------------------------------------------------------------------
; PC components I/O ports