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add generic functions & affine mouse drivers

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This commit is contained in:
Frater 2026-01-08 21:36:51 +01:00
commit 892da28db7
6 changed files with 443 additions and 235 deletions
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23
src/bda.asm
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@ -32,12 +32,6 @@
%define BDA_INFO_MEM_SIZE 0x0014 ; Memory size in Kbytes
%define BDA_INFO_MEM_SEG BDA_INFO_MEM_SIZE+2 ; highest Memory Segment
%define BDA_MOUSE_BUFFER 0x0068 ; dword
%define BDA_MOUSE_IDX BDA_MOUSE_BUFFER+4 ; byte
%define BDA_MOUSE_X BDA_MOUSE_BUFFER+5 ; word
%define BDA_MOUSE_Y BDA_MOUSE_BUFFER+7 ; word
; video related information (compatible with VGA bios)
%define BDA_VIDEO_CURR_MODE 0x0049
%define BDA_VIDEO_COLUMNS 0x004A
@ -51,4 +45,19 @@
; 40:62 byte Active display page number
; 40:63 word Base port address for active 6845 CRT controller 3B4h = mono, 3D4h = color
; 40:65 byte 6845 CRT mode control register value (port 3x8h) ; EGA/VGA values emulate those of the MDA/CGA
; 40:66 byte CGA current color palette mask setting (port 3d9h) ; EGA and VGA values emulate the CGA
; 40:66 byte CGA current color palette mask setting (port 3d9h) ; EGA and VGA values emulate the CGA
;
; information relative à la souris
;
%define BDA_MOUSE_SEG 0x0050
%define BDA_MOUSE_BUFFER 0x0000 ; dword; buffer (jusqu'à 4 octets)
%define BDA_MOUSE_IDX 0x0004 ; byte 0..3
%define DBA_MOUSE_PACKETLEN 0x0005
; 0x0006
%define BDA_MOUSE_STATUS 0x0007 ; byte
%define BDA_MOUSE_X 0x0008 ; word
%define BDA_MOUSE_Y 0x000A ; word