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-rw-r--r--instruction.h405
1 files changed, 405 insertions, 0 deletions
diff --git a/instruction.h b/instruction.h
new file mode 100644
index 0000000..af48ba0
--- /dev/null
+++ b/instruction.h
@@ -0,0 +1,405 @@
+//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
+ }
+
+}
+
+*/ \ No newline at end of file
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-30 20:19:22 +0000