void SDL_AtariXbios_InstallVectors(int vectors_mask)
{
void *oldpile;
/* Clear variables */
SDL_AtariXbios_mouselock =
SDL_AtariXbios_mouseb =
SDL_AtariXbios_mousex =
SDL_AtariXbios_mousey =
SDL_AtariXbios_joystick =
atari_prevmouseb = 0;
if (vectors_mask==0) {
SDL_AtariXbios_enabled=0;
return;
}
/* Read IKBD vectors base */
kbdvecs=Kbdvbase();
/* Go to supervisor mode */
oldpile=(void *)Super(0);
/* Install our vectors */
SDL_AtariXbios_Install(
kbdvecs,
(vectors_mask & ATARI_XBIOS_MOUSEEVENTS) ? SDL_AtariXbios_MouseVector : NULL,
(vectors_mask & ATARI_XBIOS_JOYSTICKEVENTS) ? SDL_AtariXbios_JoystickVector : NULL
);
/* Back to user mode */
Super(oldpile);
SDL_AtariXbios_enabled=1;
}
void SDL_AtariXbios_RestoreVectors(void)
{
void *oldpile;
if (SDL_AtariXbios_enabled==0) {
return;
}
/* Read IKBD vectors base */
kbdvecs=Kbdvbase();
/* Go to supervisor mode */
oldpile=(void *)Super(NULL);
/* Reinstall system vector */
SDL_AtariXbios_Restore(kbdvecs);
/* Back to user mode */
Super(oldpile);
}
void
sethooks( void )
{
unsigned int wOriginalValue;
int i;
/* find out if we're on Stacy */
wOriginalValue = *SHADOW;
for(i=0; (i<NPATTERNS)&&(isStacy); ++i){
*SHADOW = wPattern[i];
isStacy = ((*SHADOW & 0xF) == wPattern[i]);
}
*SHADOW = wOriginalValue;
ma_info->stacy = isStacy;
#ifdef CLICK_CONFIG
/* get kbshift address */
if( sysbase->os_version == 0x100 ) kbshift = KBS10;
else kbshift = sysbase->kbshift;
#endif
/* install maccel vectors */
kbase = Kbdvbase();
mvloc = &kbase->kb_mousevec;
/* IPL7();*/
oldrvec = resvector;
oldrval = resvalid;
resvector = myreset;
resvalid = RESMAGIC;
oldmvec = kbase->kb_mousevec;
kbase->kb_mousevec = mouse;
oldkbd = kbase->kb_kbdsys;
kbase->kb_kbdsys = ikbd;
oldrs = Setexc( 76, rs232 );
vbentry = VBLQUEUE;
while( *(++vbentry) ); /* skip the VDI entry */
*(void(**)())vbentry = myvbl;
/* IPL_RESTORE();*/
}
