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-rw-r--r--src/cpu/instructions.c114
1 files changed, 57 insertions, 57 deletions
diff --git a/src/cpu/instructions.c b/src/cpu/instructions.c
index 1a94386..abe6365 100644
--- a/src/cpu/instructions.c
+++ b/src/cpu/instructions.c
@@ -16,39 +16,39 @@ AddData idata;
// Load and Store Instructions
-void fLDA(Addressing addr, address val){
+void fLDA(Addressing addr){
acc = idata.value;
SetFlagN(acc);
SetFlagZ(acc);
}
-void fLDX(Addressing addr, address val){
+void fLDX(Addressing addr){
X = idata.value;
SetFlagN(X);
SetFlagZ(X);
}
-void fLDY(Addressing addr, address val){
+void fLDY(Addressing addr){
Y = idata.value;
SetFlagN(Y);
SetFlagZ(Y);
}
-void fSTA(Addressing addr, address val){
+void fSTA(Addressing addr){
SetMemory(idata.add, acc);
}
-void fSTX(Addressing addr, address val){
+void fSTX(Addressing addr){
SetMemory(idata.add, X);
}
-void fSTY(Addressing addr, address val){
+void fSTY(Addressing addr){
SetMemory(idata.add, Y);
}
// Arithmetic Instructions
-void fADC(Addressing addr, address val){
+void fADC(Addressing addr){
byte buffer = acc + idata.value + getFlag(flag_C);
SetFlagV(buffer, acc);
@@ -60,7 +60,7 @@ void fADC(Addressing addr, address val){
SetFlagZ(acc);
}
-void fSBC(Addressing addr, address val){
+void fSBC(Addressing addr){
byte buffer = acc - idata.value - !getFlag(flag_C);
SetFlagV(buffer, acc);
@@ -75,39 +75,39 @@ void fSBC(Addressing addr, address val){
//Increment and Decrement Instructions
-void fINC(Addressing addr, address val){
+void fINC(Addressing addr){
byte a = idata.value;
SetMemory(idata.add, ++a);
SetFlagN(a);
SetFlagZ(a);
}
-void fINX(Addressing addr, address val){
+void fINX(Addressing addr){
X++;
SetFlagN(X);
SetFlagZ(X);
}
-void fINY(Addressing addr, address val){
+void fINY(Addressing addr){
Y++;
SetFlagN(Y);
SetFlagZ(Y);
}
-void fDEC(Addressing addr, address val){
+void fDEC(Addressing addr){
byte a = idata.value;
SetMemory(idata.add, --a);
SetFlagN(a);
SetFlagZ(a);
}
-void fDEX(Addressing addr, address val){
+void fDEX(Addressing addr){
X--;
SetFlagN(X);
SetFlagZ(X);
}
-void fDEY(Addressing addr, address val){
+void fDEY(Addressing addr){
Y--;
SetFlagN(Y);
SetFlagZ(Y);
@@ -115,19 +115,19 @@ void fDEY(Addressing addr, address val){
// Logical Instructions
-void fAND(Addressing addr, address val){
+void fAND(Addressing addr){
acc &= idata.value;
SetFlagN(acc);
SetFlagZ(acc);
}
-void fORA(Addressing addr, address val){
+void fORA(Addressing addr){
acc |= idata.value;
SetFlagN(acc);
SetFlagZ(acc);
}
-void fEOR(Addressing addr, address val){
+void fEOR(Addressing addr){
acc ^= idata.value;
SetFlagN(acc);
SetFlagZ(acc);
@@ -135,61 +135,61 @@ void fEOR(Addressing addr, address val){
// Jump, Branch, Compare, and Test Bits
-void fJMP(Addressing addr, address val){
- PC = idata.value - idata.length;
+void fJMP(Addressing addr){
+ PC = idata.add - idata.length;
}
-void fBCC(Addressing addr, address val){
+void fBCC(Addressing addr){
if (getFlag(flag_C) == 0) PC += (char)idata.value;
}
-void fBCS(Addressing addr, address val){
+void fBCS(Addressing addr){
if (getFlag(flag_C) == 1) PC += (char)idata.value;
}
-void fBEQ(Addressing addr, address val){
+void fBEQ(Addressing addr){
if (getFlag(flag_Z) == 1) PC += (char)idata.value;
}
-void fBNE(Addressing addr, address val){
+void fBNE(Addressing addr){
if (getFlag(flag_Z) == 0) PC += (char)idata.value;
}
-void fBMI(Addressing addr, address val){
+void fBMI(Addressing addr){
if (getFlag(flag_N) == 1) PC += (char)idata.value;
}
-void fBPL(Addressing addr, address val){
+void fBPL(Addressing addr){
if (getFlag(flag_N) == 0) PC += (char)idata.value;
}
-void fBVS(Addressing addr, address val){
+void fBVS(Addressing addr){
if (getFlag(flag_V) == 1) PC += (char)idata.value;
}
-void fBVC(Addressing addr, address val){
+void fBVC(Addressing addr){
if (getFlag(flag_V) == 0) PC += (char)idata.value;
}
-void fCMP(Addressing addr, address val){
+void fCMP(Addressing addr){
SetFlag(flag_C, (acc >= idata.value) ? 1 : 0);
SetFlag(flag_Z, (acc == idata.value) ? 1 : 0);
SetFlag(flag_N, (acc < idata.value) ? 1 : 0);
}
-void fCPX(Addressing addr, address val){
+void fCPX(Addressing addr){
SetFlag(flag_C, (X >= idata.value) ? 1 : 0);
SetFlag(flag_Z, (X == idata.value) ? 1 : 0);
SetFlag(flag_N, (X < idata.value) ? 1 : 0);
}
-void fCPY(Addressing addr, address val){
+void fCPY(Addressing addr){
SetFlag(flag_C, (Y >= idata.value) ? 1 : 0);
SetFlag(flag_Z, (Y == idata.value) ? 1 : 0);
SetFlag(flag_N, (Y < idata.value) ? 1 : 0);
}
-void fBIT(Addressing addr, address val){
+void fBIT(Addressing addr){
SetFlag(flag_N, ((idata.value & flag_N) != 0) ? 1 : 0);
SetFlag(flag_V, ((idata.value & flag_V) != 0) ? 1 : 0);
SetFlag(flag_Z, ((idata.value & acc) == 0) ? 1 : 0);
@@ -197,7 +197,7 @@ void fBIT(Addressing addr, address val){
// Shift and Rotate Instructions
-void fASL(Addressing addr, address val){
+void fASL(Addressing addr){
if (addr == eAccumulator) {
SetFlag(flag_C, (acc & 0x80));
acc = (idata.value << 1) & 0xFE;
@@ -213,7 +213,7 @@ void fASL(Addressing addr, address val){
}
}
-void fLSR(Addressing addr, address val){
+void fLSR(Addressing addr){
if (addr == eAccumulator) {
SetFlag(flag_C, (acc & 0x01));
acc = (idata.value >> 1) & 0x7F;
@@ -229,7 +229,7 @@ void fLSR(Addressing addr, address val){
}
}
-void fROL(Addressing addr, address val){
+void fROL(Addressing addr){
if (addr == eAccumulator) {
SetFlag(flag_C, (idata.value & 0x80));
acc = (idata.value << 1) & 0xFE;
@@ -248,7 +248,7 @@ void fROL(Addressing addr, address val){
}
}
-void fROR(Addressing addr, address val){
+void fROR(Addressing addr){
if (addr == eAccumulator) {
SetFlag(flag_C, (idata.value & 0x01));
acc = (idata.value >> 1) & 0x7F;
@@ -269,25 +269,25 @@ void fROR(Addressing addr, address val){
// Transfer Instructions
-void fTAX(Addressing addr, address val){
+void fTAX(Addressing addr){
X = acc;
SetFlagN(X);
SetFlagZ(X);
}
-void fTAY(Addressing addr, address val){
+void fTAY(Addressing addr){
Y = acc;
SetFlagN(Y);
SetFlagZ(Y);
}
-void fTXA(Addressing addr, address val){
+void fTXA(Addressing addr){
acc = X;
SetFlagN(acc);
SetFlagZ(acc);
}
-void fTYA(Addressing addr, address val){
+void fTYA(Addressing addr){
acc = Y;
SetFlagN(acc);
SetFlagZ(acc);
@@ -295,46 +295,46 @@ void fTYA(Addressing addr, address val){
// Stack Instructions
-void fTSX(Addressing addr, address val){
+void fTSX(Addressing addr){
X = S;
}
-void fTXS(Addressing addr, address val){
+void fTXS(Addressing addr){
S = X;
}
-void fPHA(Addressing addr, address val){
+void fPHA(Addressing addr){
SetStack(acc);
}
-void fPHP(Addressing addr, address val){
+void fPHP(Addressing addr){
SetStack(P);
}
-void fPLA(Addressing addr, address val){
+void fPLA(Addressing addr){
acc = GetStack();
}
-void fPLP(Addressing addr, address val){
+void fPLP(Addressing addr){
P = GetStack();
}
// Subroutine Instructions
-void fJSR(Addressing addr, address val){
+void fJSR(Addressing addr){
SetStack ((PC+idata.length) >> 8);
SetStack(((PC+idata.length) & 0x00FF) - 1);
PC = idata.add;
PC -= idata.length;
}
-void fRTS(Addressing addr, address val){
+void fRTS(Addressing addr){
PC = (address)(GetStack()) + 1;
PC += ((address)(GetStack())) << 8;
PC -= idata.length;
}
-void fRTI(Addressing addr, address val){
+void fRTI(Addressing addr){
P = GetStack(); //NEED TO FIX
PC = (address)(GetStack());
PC += (address)(GetStack() << 8);
@@ -342,40 +342,40 @@ void fRTI(Addressing addr, address val){
// Set/Reset Insutrctions
-void fCLC(Addressing addr, address val){
+void fCLC(Addressing addr){
SetFlag(flag_C, 0);
}
-void fCLD(Addressing addr, address val){
+void fCLD(Addressing addr){
SetFlag(flag_D, 0);
}
-void fCLI(Addressing addr, address val){
+void fCLI(Addressing addr){
SetFlag(flag_I, 0);
}
-void fCLV(Addressing addr, address val){
+void fCLV(Addressing addr){
SetFlag(flag_V, 0);
}
-void fSEC(Addressing addr, address val){
+void fSEC(Addressing addr){
SetFlag(flag_C, 1);
}
-void fSED(Addressing addr, address val){
+void fSED(Addressing addr){
SetFlag(flag_D, 1);
}
-void fSEI(Addressing addr, address val){
+void fSEI(Addressing addr){
SetFlag(flag_I, 1);
}
// NOP/BRK Instructions
-void fNOP(Addressing addr, address val){
+void fNOP(Addressing addr){
}
-void fBRK(Addressing addr, address val){
+void fBRK(Addressing addr){
SetStack((((PC+2) & 0xFF00) >> 8));
SetStack((PC+2) & 0x00FF);
SetStack(P);
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-30 08:25:12 +0000