/*
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/*
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* Copyright (c) 1999 Greg Haerr <greg@censoft.com>
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* Copyright (c) 1999 Greg Haerr <greg@censoft.com>
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*
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*
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* DOS Mouse Driver, uses int 33h
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* DOS Mouse Driver, uses int 33h
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* Added fix for DJGPP 32 bit compilation
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* Added fix for DJGPP 32 bit compilation
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*/
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*/
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#include <dos.h>
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#include <dos.h>
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#ifndef __PACIFIC__
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#ifndef __PACIFIC__
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#include <bios.h>
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#include <bios.h>
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#endif
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#endif
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#include "device.h"
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#include "device.h"
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#define SCALE 1 /* default scaling factor for acceleration WAS 3*/
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#define SCALE 1 /* default scaling factor for acceleration WAS 3*/
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#define THRESH 10 /* default threshhold for acceleration WAS 0*/
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#define THRESH 10 /* default threshhold for acceleration WAS 0*/
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static int MOU_Open(MOUSEDEVICE *pmd);
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static int MOU_Open(MOUSEDEVICE *pmd);
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static void MOU_Close(void);
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static void MOU_Close(void);
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static int MOU_GetButtonInfo(void);
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static int MOU_GetButtonInfo(void);
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static void MOU_GetDefaultAccel(int *pscale,int *pthresh);
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static void MOU_GetDefaultAccel(int *pscale,int *pthresh);
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static int MOU_Read(MWCOORD *dx, MWCOORD *dy, MWCOORD *dz,int *bp);
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static int MOU_Read(MWCOORD *dx, MWCOORD *dy, MWCOORD *dz,int *bp);
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static int MOU_Poll(void);
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static int MOU_Poll(void);
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MOUSEDEVICE mousedev = {
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MOUSEDEVICE mousedev = {
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MOU_Open,
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MOU_Open,
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MOU_Close,
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MOU_Close,
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MOU_GetButtonInfo,
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MOU_GetButtonInfo,
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MOU_GetDefaultAccel,
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MOU_GetDefaultAccel,
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MOU_Read,
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MOU_Read,
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MOU_Poll
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MOU_Poll
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};
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};
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static int mouse_fd;
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static int mouse_fd;
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/*
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/*
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* Open up the mouse device.
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* Open up the mouse device.
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*/
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*/
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static int
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static int
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MOU_Open(MOUSEDEVICE *pmd)
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MOU_Open(MOUSEDEVICE *pmd)
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{
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{
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union REGS regset;
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union REGS regset;
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/* init mouse*/
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/* init mouse*/
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regset.x.ax = 0;
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regset.x.ax = 0;
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int86(0x33, ®set, ®set);
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int86(0x33, ®set, ®set);
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/* set mickey-to-pixel ratio*/
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/* set mickey-to-pixel ratio*/
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regset.x.ax = 0x0f;
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regset.x.ax = 0x0f;
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regset.x.cx = 16; /* # mickeys per 8 pixels x direction (default 8)*/
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regset.x.cx = 16; /* # mickeys per 8 pixels x direction (default 8)*/
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regset.x.dx = 32; /* # mickeys per 8 pixels y direction (default 16)*/
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regset.x.dx = 32; /* # mickeys per 8 pixels y direction (default 16)*/
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int86(0x33, ®set, ®set);
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int86(0x33, ®set, ®set);
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/* read motion counters to reset*/
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/* read motion counters to reset*/
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regset.x.ax = 0x0b;
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regset.x.ax = 0x0b;
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int86(0x33, ®set, ®set);
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int86(0x33, ®set, ®set);
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return 1;
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return 1;
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}
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}
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/*
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/*
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* Close the mouse device.
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* Close the mouse device.
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*/
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*/
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static void
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static void
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MOU_Close(void)
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MOU_Close(void)
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{
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{
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}
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}
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/*
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/*
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* Get mouse buttons supported
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* Get mouse buttons supported
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*/
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*/
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static int
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static int
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MOU_GetButtonInfo(void)
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MOU_GetButtonInfo(void)
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{
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{
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return MWBUTTON_L | MWBUTTON_M | MWBUTTON_R;
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return MWBUTTON_L | MWBUTTON_M | MWBUTTON_R;
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}
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}
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/*
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/*
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* Get default mouse acceleration settings
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* Get default mouse acceleration settings
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*/
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*/
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static void
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static void
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MOU_GetDefaultAccel(int *pscale,int *pthresh)
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MOU_GetDefaultAccel(int *pscale,int *pthresh)
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{
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{
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*pscale = SCALE;
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*pscale = SCALE;
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*pthresh = THRESH;
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*pthresh = THRESH;
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}
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}
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/*
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/*
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* Attempt to read bytes from the mouse and interpret them.
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* Attempt to read bytes from the mouse and interpret them.
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* Returns -1 on error, 0 if either no bytes were read or not enough
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* Returns -1 on error, 0 if either no bytes were read or not enough
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* was read for a complete state, or 1 if the new state was read.
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* was read for a complete state, or 1 if the new state was read.
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* When a new state is read, the current buttons and x and y deltas
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* When a new state is read, the current buttons and x and y deltas
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* are returned. This routine does not block.
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* are returned. This routine does not block.
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*/
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*/
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static int
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static int
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MOU_Read(MWCOORD *dx, MWCOORD *dy, MWCOORD *dz, int *bp)
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MOU_Read(MWCOORD *dx, MWCOORD *dy, MWCOORD *dz, int *bp)
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{
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{
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union REGS regset;
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union REGS regset;
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int buttons;
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int buttons;
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/* read motion counters*/
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/* read motion counters*/
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regset.x.ax = 0x0b;
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regset.x.ax = 0x0b;
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int86(0x33, ®set, ®set);
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int86(0x33, ®set, ®set);
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*dx = (short)regset.x.cx;
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*dx = (short)regset.x.cx;
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*dy = (short)regset.x.dx;
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*dy = (short)regset.x.dx;
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*dz = 0;
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*dz = 0;
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/* read button status*/
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/* read button status*/
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regset.x.ax = 3;
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regset.x.ax = 3;
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int86(0x33, ®set, ®set);
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int86(0x33, ®set, ®set);
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buttons = 0;
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buttons = 0;
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if(regset.x.bx & 01)
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if(regset.x.bx & 01)
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buttons |= MWBUTTON_L;
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buttons |= MWBUTTON_L;
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if(regset.x.bx & 02)
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if(regset.x.bx & 02)
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buttons |= MWBUTTON_R;
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buttons |= MWBUTTON_R;
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if(regset.x.bx & 04)
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if(regset.x.bx & 04)
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buttons |= MWBUTTON_M;
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buttons |= MWBUTTON_M;
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*bp = buttons;
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*bp = buttons;
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return 1;
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return 1;
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}
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}
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static int
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static int
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MOU_Poll(void)
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MOU_Poll(void)
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{
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{
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return 1;
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return 1;
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}
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}
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