void _interrupt _far newkbisr(void)
#endif
{
static extkey;
BYTE scancode = (BYTE)keyport(); /* read keyboard scan code */
if (scancode == 0xe0)
extkey = 1; /* use ekey array on next scan code */
else
{
if (scancode & 0x80) /* key released */
(extkey ? ekeys : keys)[scancode & 0x7f] = 0;
else (extkey ? ekeys : keys)[scancode] = 1;
extkey = 0;
}
#ifdef __ZTC__
return 0; /* chain to previous keyboard ISR */
#else
oldkbisr(); /* chain to previous keyboard ISR */
#endif
}
static void INTERRUPT FAR newkbisr(void)
{
static int count = 0;
int key = keyport();
if (KBtrap_active)
{
if (count)
{
unsigned char kbin;
--count;
if (PRTSCRNSCAN == key)
PrtScrnPending = True_;
IGNORE:
kbin = (unsigned char)inp(KEYPORT+1); /* reset keyboard */
outp(KEYPORT+1, kbin|0x80);
outp(KEYPORT+1, kbin);
disable();
outp(CONTROLLERPORT,0x20); /* tell controller to shut up */
enable();
return;
}
else switch (key)
{
case MULTI2SCAN:
count = 1;
goto IGNORE;
case MULTI3SCAN:
count = 2;
goto IGNORE;
case DELSCAN:
if (CTRLALT == (kbstat() & CTRLALT))
goto IGNORE;
break;
case PRTSCRNSCAN:
PrtScrnPending = True_;
goto IGNORE;
case CSCAN:
case BREAKSCAN:
if (CTRL == (kbstat() & CTRL))
goto IGNORE;
break;
case SYSREQSCAN:
goto IGNORE;
}
}
else
{
if (count)
{
--count;
return;
}
}
oldkbisr(); /* chain to old keyboard isr */
}