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Diffstat (limited to 'headers/instructions/definitions.h')
| -rw-r--r-- | headers/instructions/definitions.h | 360 |
1 files changed, 0 insertions, 360 deletions
diff --git a/headers/instructions/definitions.h b/headers/instructions/definitions.h deleted file mode 100644 index 937ca10..0000000 --- a/headers/instructions/definitions.h +++ /dev/null @@ -1,360 +0,0 @@ -// instructions.h -// Definition of all instruction functions, handling effect of instruction and flags. - -AddData idata; - - -/* TO DO - -!!!!!!!! CHECK THAT idata.value IS USED ACROSS ALL FUNCTIONS, NOT VAL !!!!!!!!!!!!!! - ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -Fix all functions before performing testing - -*/ - -// Load and Store Instructions - -void fLDA(Addressing addr, address val){ idata = fAddress(addr, val); - acc = idata.value; -} - -void fLDX(Addressing addr, address val){ idata = fAddress(addr, val); - X = idata.value; -} - -void fLDY(Addressing addr, address val){ idata = fAddress(addr, val); - Y = idata.value; -} - -void fSTA(Addressing addr, address val){ idata = fAddress(addr, val); - setMemory(idata.add, acc); -} - -void fSTX(Addressing addr, address val){ idata = fAddress(addr, val); - setMemory(idata.add, X); -} - -void fSTY(Addressing addr, address val){ idata = fAddress(addr, val); - setMemory(idata.add, Y); -} - -// Arithmetic Instructions - -void fADC(Addressing addr, address val){ idata = fAddress(addr, val); - int buffer = acc + idata.value; - setFlagV(buffer, acc); - - if (buffer > 255) - flagSet(flag_C); - else - flagClear(flag_C); - - acc += idata.value; - setFlagN(acc); - setFlagZ(acc); -} - -void fSBC(Addressing addr, address val){ idata = fAddress(addr, val); - int buffer = acc - idata.value; - setFlagV(buffer, acc); - - if (buffer < 0) - flagSet(flag_C); - else - flagClear(flag_C); - - acc -= idata.value; - setFlagN(acc); - setFlagZ(acc); -} - -//Increment and Decrement Instructions - -void fINC(Addressing addr, address val){ idata = fAddress(addr, val); - byte a = getMemory(idata.add); - a++; - setMemory(idata.add, a); - setFlagN(Memory[idata.add]); - setFlagZ(Memory[idata.add]); -} - -void fINX(Addressing addr, address val){ idata = fAddress(addr, val); - X++; - setFlagN(X); - setFlagZ(X); -} - -void fINY(Addressing addr, address val){ idata = fAddress(addr, val); - Y++; - setFlagN(Y); - setFlagZ(Y); -} - -void fDEC(Addressing addr, address val){ idata = fAddress(addr, val); - byte a = getMemory(idata.add); - a--; - setMemory(idata.add, a); - setFlagN(Memory[idata.add]); - setFlagZ(Memory[idata.add]); -} - -void fDEX(Addressing addr, address val){ idata = fAddress(addr, val); - X--; - setFlagN(X); - setFlagZ(X); -} - -void fDEY(Addressing addr, address val){ idata = fAddress(addr, val); - Y--; - setFlagN(Y); - setFlagZ(Y); -} - -// Logical Instructions - -void fAND(Addressing addr, address val){ idata = fAddress(addr, val); - acc &= idata.value; - setFlagN(acc); - setFlagZ(acc); -} - -void fORA(Addressing addr, address val){ idata = fAddress(addr, val); - acc |= idata.value; - setFlagN(acc); - setFlagZ(acc); -} - -void fEOR(Addressing addr, address val){ idata = fAddress(addr, val); - acc ^= idata.value; - setFlagN(acc); - setFlagZ(acc); -} - -// Jump, Branch, Compare, and Test Bits - -void fJMP(Addressing addr, address val){ idata = fAddress(addr, val); - PC = val; -} - -void fBCC(Addressing addr, address val){ idata = fAddress(addr, val); //FINISH ALL BRANCH INSTRUCTIONS - //signed char val down to BVC - if (getFlag(flag_C) == 0) PC += val; -} - -void fBCS(Addressing addr, address val){ idata = fAddress(addr, val); - if (getFlag(flag_C) == 1) PC += val; -} - -void fBEQ(Addressing addr, address val){ idata = fAddress(addr, val); - if (getFlag(flag_Z) == 1) PC += val; -} - -void fBNE(Addressing addr, address val){ idata = fAddress(addr, val); - if (getFlag(flag_Z) == 0) PC += val; -} - -void fBMI(Addressing addr, address val){ idata = fAddress(addr, val); - if (getFlag(flag_N) == 1) PC += val; -} - -void fBPL(Addressing addr, address val){ idata = fAddress(addr, val); - if (getFlag(flag_N) == 0) PC += val; -} - -void fBVS(Addressing addr, address val){ idata = fAddress(addr, val); - if (getFlag(flag_V) == 1) PC += val; -} - -void fBVC(Addressing addr, address val){ idata = fAddress(addr, val); - if (getFlag(flag_V) == 0) PC += val; -} - -void fCMP(Addressing addr, address val){ idata = fAddress(addr, val); - if (acc < idata.value){ - flagSet(flag_N); flagClear(flag_Z); flagClear(flag_C); - }if (acc == idata.value){ - flagClear(flag_N); flagSet(flag_Z); flagClear(flag_C); - }if (acc > idata.value){ - flagClear(flag_N); flagClear(flag_Z); flagSet(flag_C); - } -} - -void fCPX(Addressing addr, address val){ idata = fAddress(addr, val); - if (X < idata.value){ - flagSet(flag_N); flagClear(flag_Z); flagClear(flag_C); - }if (X == idata.value){ - flagClear(flag_N); flagSet(flag_Z); flagClear(flag_C); - }if (X > idata.value){ - flagClear(flag_N); flagClear(flag_Z); flagSet(flag_C); - } -} - -void fCPY(Addressing addr, address val){ idata = fAddress(addr, val); - if (Y < idata.value){ - flagSet(flag_N); flagClear(flag_Z); flagClear(flag_C); - }if (Y == idata.value){ - flagClear(flag_N); flagSet(flag_Z); flagClear(flag_C); - }if (Y > idata.value){ - flagClear(flag_N); flagClear(flag_Z); flagSet(flag_C); - } -} - -//NEED TO DOUBLE CHECK THIS INSTRUCTION -void fBIT(Addressing addr, address val){ idata = fAddress(addr, val); - setFlag(flag_N, (idata.value & flag_N)); - setFlag(flag_V, (idata.value & flag_V)); - - if (((idata.value & flag_N) & (idata.value & flag_V)) == 0) { - flagSet(flag_Z); - } else { - flagSet(flag_Z); - } -} - -// Shift and Rotate Instructions - -void fASL(Addressing addr, address val){ idata = fAddress(addr, val); - setFlag(flag_C, (idata.value & 0x80)); - acc = (idata.value << 1); - setFlagN(acc); - setFlagZ(acc); -} - -void fLSR(Addressing addr, address val){ idata = fAddress(addr, val); - setFlag(flag_C, (idata.value & 0x01)); - acc = (idata.value >> 1); - setFlagN(acc); - setFlagZ(acc); -} - -void fROL(Addressing addr, address val){ idata = fAddress(addr, val); - setFlag(flag_C, (val & 0x80)); - acc = (val << 1); - acc |= (getFlag(flag_C) * 0x01); - setFlagN(acc); - setFlagZ(acc); -} - -void fROR(Addressing addr, address val){ idata = fAddress(addr, val); - setFlag(flag_C, (val & 0x01)); - acc = (val >> 1); - acc |= (getFlag(flag_C) * 0x80); - setFlagN(acc); - setFlagZ(acc); -} - -// Transfer Instructions - -void fTAX(Addressing addr, address val){ idata = fAddress(addr, val); - X = acc; - //setFlagN(X); - //setFlagZ(X); -} - -void fTAY(Addressing addr, address val){ idata = fAddress(addr, val); - Y = acc; - //setFlagN(Y); - //setFlagZ(Y); -} - -void fTXA(Addressing addr, address val){ idata = fAddress(addr, val); - acc = X; - setFlagN(acc); - setFlagZ(acc); -} - -void fTYA(Addressing addr, address val){ idata = fAddress(addr, val); - acc = Y; - setFlagN(acc); - setFlagZ(acc); -} - -// Stack Instructions - -void fTSX(Addressing addr, address val){ idata = fAddress(addr, val); - X = S; -} - -void fTXS(Addressing addr, address val){ idata = fAddress(addr, val); - S = X; -} - -void fPHA(Addressing addr, address val){ idata = fAddress(addr, val); - setMemory(0x01FF-S, acc); - S++; -} - -void fPHP(Addressing addr, address val){ idata = fAddress(addr, val); - setMemory(0x01FF-S, P); - S++; -} - -void fPLA(Addressing addr, address val){ idata = fAddress(addr, val); - S--; - acc = getMemory(0x01FF-S); -} - -void fPLP(Addressing addr, address val){ idata = fAddress(addr, val); - S--; - P = getMemory(0x01FF-S); -} - -// Subroutine Instructions -// NEED TO FINISH THESE - -void fJSR(Addressing addr, address val){ idata = fAddress(addr, val); - Memory[0x01FF-S] = (idata.add-1); - S++; - PC = idata.add; -} - -void fRTS(Addressing addr, address val){ idata = fAddress(addr, val); - -} - -void fRTI(Addressing addr, address val){ idata = fAddress(addr, val); - -} - -// Set/Reset Insutrctions - -void fCLC(Addressing addr, address val){ idata = fAddress(addr, val); - flagClear(flag_C); -} - -void fCLD(Addressing addr, address val){ idata = fAddress(addr, val); - flagClear(flag_D); -} - -void fCLI(Addressing addr, address val){ idata = fAddress(addr, val); - flagClear(flag_I); -} - -void fCLV(Addressing addr, address val){ idata = fAddress(addr, val); - flagClear(flag_V); -} - -void fSEC(Addressing addr, address val){ idata = fAddress(addr, val); - flagSet(flag_C); -} - -void fSED(Addressing addr, address val){ idata = fAddress(addr, val); - flagSet(flag_D); -} - -void fSEI(Addressing addr, address val){ idata = fAddress(addr, val); - flagSet(flag_I); -} - -// NOP/BRK Instructions - -void fNOP(Addressing addr, address val){ idata = fAddress(addr, val); -} - -void fBRK(Addressing addr, address val){ idata = fAddress(addr, val); - flagSet(flag_B); -} - -#ifdef ILLEGAL -#include"illegal/definitions.h" -#endif
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