#include "system.h" //#include namespace MDFN_IEN_WSWAN { void Interrupt::Recalc() { IOn_Cache = FALSE; IOn_Which = 0; IVector_Cache = 0; for(int i = 0; i < 8; i++) { if(IStatus & IEnable & (1 << i)) { IOn_Cache = TRUE; IOn_Which = i; IVector_Cache = (IVectorBase + i) * 4; break; } } } void Interrupt::DebugForce(unsigned int level) { sys->cpu.interrupt((IVectorBase + level) * 4, TRUE); } void Interrupt::DoInterrupt(int which) { if(IEnable & (1 << which)) IStatus |= 1 << which; //printf("Interrupt: %d\n", which); Recalc(); } void Interrupt::Write(uint32 A, uint8 V) { //printf("Write: %04x %02x\n", A, V); switch(A) { case 0xB0: IVectorBase = V; Recalc(); break; case 0xB2: IEnable = V; IStatus &= IEnable; Recalc(); break; case 0xB6: /*printf("IStatus: %02x\n", V);*/ IStatus &= ~V; Recalc(); break; } } uint8 Interrupt::Read(uint32 A) { //printf("Read: %04x\n", A); switch(A) { case 0xB0: return(IVectorBase); case 0xB2: return(IEnable); case 0xB6: return(1 << IOn_Which); //return(IStatus); } return(0); } void Interrupt::Check() { if(IOn_Cache) { sys->cpu.interrupt(IVector_Cache, FALSE); } } void Interrupt::Reset() { IEnable = 0x00; IStatus = 0x00; IVectorBase = 0x00; Recalc(); } SYNCFUNC(Interrupt) { NSS(IStatus); NSS(IEnable); NSS(IVectorBase); NSS(IOn_Cache); NSS(IOn_Which); NSS(IVector_Cache); } }