//void fXXX(ADDRESSING addr, int val) // Load and Store Instructions void fLDA(Addressing addr, int val){ acc = fAddressing(addr, val); } void fLDX(Addressing addr, int val){ X = fAddressing(addr, val); } void fLDY(Addressing addr, int val){ Y = fAddressing(addr, val); } void fSTA(Addressing addr, int val){ Memory[(fAddressing(addr, val))] = acc; } void fSTX(Addressing addr, int val){ Memory[(fAddressing(addr, val))] = X; } void fSTY(Addressing addr, int val){ Memory[(fAddressing(addr, val))] = Y; } // Arithmetic Instructions //Increment and Decrement Instructions // Logical Instructions void fAND(Addressing addr, int val){ acc = acc & fAddressing(addr, val); setFlagN(); setFlagZ(acc); } void fORA(Addressing addr, int val){ acc = acc | fAddressing(addr, val); setFlagN(); setFlagZ(acc); } void fEOR(Addressing addr, int val){ acc = acc ^ fAddressing(addr, val); setFlagN(); setFlagZ(acc); } // Jump, Branch, Compare, and Test Bits // Shift and Rotate Instructions void fASL(Addressing addr, int val){ setFlag(flag_C, (val & 0x80)); acc = (val << 1); setFlagN(); setFlagZ(acc); } // Transfer Instructions // Stack Instructions // Subroutine Instructions // Set/Reset Insutrctions void fCLC(){ setFlag(flag_C, 0); } void fCLD(){ setFlag(flag_D, 0); } void fCLI(){ setFlag(flag_I, 0); } void fCLV(){ setFlag(flag_V, 0); } void fSEC(){ setFlag(flag_C, 1); } void fSED(){ setFlag(flag_D, 1); } void fSEI(){ setFlag(flag_I, 1); } // NOP/BRK Instructions /* Disabled for the purpose of testing functions. this will become relevant towards the end of project. // Instruction Meta // Alternative would be to make all functions pointer functions, and then look them up //according to the code in such a way. It may be more readable that way. void runInstruction(int code, int val){ switch(code){ // 0x0. case 0x0 case 0x0 case 0x0 case 0x0 case 0x0 case 0x0 case 0x0 case 0x0 case 0x0 case 0x0 case 0x0 case 0x0 case 0x0 case 0x0 case 0x0 case 0x0 // 0x1. case 0x10 case 0x11 case 0x12 case 0x13 case 0x14 case 0x15 case 0x16 case 0x17 case 0x18: fCLC(); case 0x1 case 0x1 case 0x1 case 0x1 case 0x1 case 0x1 case 0x1 // 0x2. case 0x2 case 0x2 case 0x2 case 0x2 case 0x2 case 0x2 case 0x2 case 0x2 case 0x2 case 0x2 case 0x2 case 0x2 case 0x2 case 0x2 case 0x2 case 0x2 // 0x3. case 0x30 case 0x31 case 0x32 case 0x33 case 0x34 case 0x35 case 0x36 case 0x37 case 0x38: fSEC(); case 0x case 0x case 0x case 0x case 0x case 0x case 0x // 0x4. case 0x40: case 0x41: case 0x42: case 0x43: case 0x44: case 0x45: case 0x46: case 0x47: case 0x48: case 0x49: case 0x4A: case 0x4B: case 0x4C: case 0x4D: case 0x4E: case 0x4F: // 0x5. case 0x50: case 0x51: case 0x52: case 0x53: case 0x54: case 0x55: case 0x56: case 0x57: case 0x58: fCLI(); case 0x59: case 0x5A: case 0x5B: case 0x5C: case 0x5D: case 0x5E: case 0x5F: // 0x6. case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x // 0x7. case 0x70 case 0x71 case 0x72 case 0x73 case 0x74 case 0x75 case 0x76 case 0x77 case 0x78: fSEI(); case 0x case 0x case 0x case 0x case 0x case 0x case 0x // 0x8. case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x // 0x9. case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x // 0xA. case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x // 0xB. case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0xB8: fCLV(); case 0x case 0x case 0x case 0x case 0x case 0x case 0x // 0xC. case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x // 0xD. case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0xD8: fCLD(); case 0x case 0x case 0x case 0x case 0x case 0x case 0x // 0xE. case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x // 0xF. case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0x case 0xF8: fSED(); case 0x case 0x case 0x case 0x case 0x case 0x case 0x default: //Error } } */