auto R65816::op_jsr_addr() {
aa.l = readPC();
aa.h = readPC();
idle();
r.pc.w--;
writeSP(r.pc.h);
L writeSP(r.pc.l);
r.pc.w = aa.w;
}
int runCPUCycle(){
//Both used in DAA
char correction;
char beforeA;
unsigned short beforeHL;
char temp;
opcodeInstruction instruction;
unsigned char currentInterrupts;
if(delayCyclesLeft!=0){
delayCyclesLeft--;
return 0;
}
//Check for Interrupts
if(IME == 1){
currentInterrupts = (*interruptFlags)&interruptER;
if(currentInterrupts&INT_VBLANK){
writeSP(getSP()-2);
writeShortToMem(getSP(),getPC());
writePC(0x40);
IME = 0;
*interruptFlags = (*interruptFlags)& ~(INT_VBLANK);
} else if(currentInterrupts&INT_LCD){
writeSP(getSP()-2);
writeShortToMem(getSP(),getPC());
writePC(0x48);
IME = 0;
*interruptFlags = (*interruptFlags)& ~(INT_LCD);
} else if(currentInterrupts&INT_TIMER){
writeSP(getSP()-2);
writeShortToMem(getSP(),getPC());
writePC(0x50);
IME = 0;
*interruptFlags = (*interruptFlags)& ~(INT_TIMER);
} else if(currentInterrupts&INT_SERIAL){
writeSP(getSP()-2);
writeShortToMem(getSP(),getPC());
writePC(0x58);
IME = 0;
*interruptFlags = (*interruptFlags)& ~(INT_SERIAL);
} else if(currentInterrupts&INT_JOYPAD){
writeSP(getSP()-2);
writeShortToMem(getSP(),getPC());
writePC(0x60);
IME = 0;
*interruptFlags = (*interruptFlags)& ~(INT_JOYPAD);
}
}
delayCyclesLeft = instructionClockCycles[readCharFromMem(getPC())]; //Will be overwritten is instruction is CB
if(delayCyclesLeft == -1){
delayCyclesLeft = 20; //My not need any actual implementation
}
//Add the instruction to the list of called instructions
PCRecallAdd(PCRecallHead,getPC());
//Get the instruction from the jump table
if((readCharFromMem(getPC())&0xFF)==0xCB){
instruction = opcodes[readCharFromMem(getPC()+1)+0x100];
writePC(getPC()+1);
incrementInstructionCount(readCharFromMem(getPC())+0x100);
delayCyclesLeft = CBInstructionClockCycles[readCharFromMem(getPC())];
//printf("Using CB instruction at PC: %hX\n",getPC());
} else {
if((readCharFromMem(getPC())&0xFF)==0x10){
return 0x10;
}
//printf("Instruction Index: %hhX PC: %hX\n",readCharFromMem(getPC()),getPC());
incrementInstructionCount(readCharFromMem(getPC()));
instruction = opcodes[readCharFromMem(getPC())];
}
//Call the instruction
if(instruction!=0){
instruction();
} else {
printf("Unknown Instruction: %hhX at PC: %hhX\n",readCharFromMem(getPC()),getPC());
return 0x10; //Stop
writePC(getPC()+1);
}
return 0;
}
auto R65816::op_sta_sr_w() {
sp = readPC();
idle();
writeSP(sp + 0, r.a.l);
L writeSP(sp + 1, r.a.h);
}
uint32_t DebugProtocolWriter::writeBinary(
const std::unique_ptr<folly::IOBuf>& str) {
writeSP(folly::StringPiece(str->clone()->coalesce()));
return 0;
}
auto R65816::op_sta_sr_b() {
sp = readPC();
idle();
L writeSP(sp, r.a.l);
}
