bool DSP_ProcessIRQ(void)
{
if (bDspHostInterruptPending && regs.intmask < 6)
{
M68000_Exception(IoMem_ReadByte(0xffa203)*4, M68000_EXC_SRC_INT_DSP);
bDspHostInterruptPending = false;
// M68000_UnsetSpecial(SPCFLAG_DSP);
return true;
}
return false;
}
/**
* Do given Native Feature, if it is supported
* and set 'retval' accordingly.
*
* Return true if caller is to proceed normally,
* false if there was an exception.
*/
bool NatFeat_Call(Uint32 stack, bool super, Uint32 *retval)
{
Uint32 subid = STMemory_ReadLong(stack);
unsigned int idx = MASTERID2IDX(subid);
subid = MASKOUTMASTERID(subid);
if (idx >= ARRAYSIZE(features)) {
LOG_TRACE(TRACE_NATFEATS, "ERROR: invalid NF ID %d requested\n", idx);
return true; /* undefined */
}
if (features[idx].super && !super) {
LOG_TRACE(TRACE_NATFEATS, "ERROR: NF function %d called without supervisor mode\n", idx);
#ifndef WINUAE_FOR_HATARI
M68000_Exception(8, M68000_EXC_SRC_CPU);
#else
M68000_Exception(8, M68000_EXC_SRC_CPU);
#endif
return false;
}
stack += SIZE_LONG;
return features[idx].cb(stack, subid, retval);
}
