Removed Duplicate instructions.
LDA and LDB are now Data Operations only. Minor reshuffling of instructions. Fixed typo in the programming manual.
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@@ -37,11 +37,9 @@ Instruction instruction_set[] = {
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{0x23, "INCB"},
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{0x23, "INCB"},
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{0x24, "DECA"},
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{0x24, "DECA"},
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{0x25, "DECB"},
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{0x25, "DECB"},
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{0x26, "LDA"},
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{0x26, "INIA"},
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{0x27, "LDB"},
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{0x27, "INIB"},
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{0x28, "INIA"},
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{0x28, "CCF"},
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{0x29, "INIB"},
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{0x2F, "CCF"},
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// Stack Operations:
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// Stack Operations:
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{0x30, "PSHQ"},
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{0x30, "PSHQ"},
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{0x31, "PSHA"},
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{0x31, "PSHA"},
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+2
-10
@@ -235,24 +235,16 @@ uint8_t executeOperation(uint8_t Instruction, CPURegisters *cpu) {
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cpu->B--;
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cpu->B--;
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break;
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break;
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case 0x26:
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case 0x26:
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// LDA - Load the byte referenced by the Data Pointer to A.
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cpu->A = cpu->Data[cpu->DataPointer];
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break;
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case 0x27:
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// LDB - Load the byte referenced by the Data Pointer to B.
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cpu->B = cpu->Data[cpu->DataPointer];
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break;
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case 0x28:
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// INIA - Initialize A Immediately from Program Memory.
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// INIA - Initialize A Immediately from Program Memory.
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cpu->ProgramCounter++;
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cpu->ProgramCounter++;
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cpu->A = cpu->Program[cpu->ProgramCounter];
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cpu->A = cpu->Program[cpu->ProgramCounter];
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break;
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break;
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case 0x29:
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case 0x27:
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// INIB - Initialize A Immediately from Program Memory.
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// INIB - Initialize A Immediately from Program Memory.
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cpu->ProgramCounter++;
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cpu->ProgramCounter++;
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cpu->B = cpu->Program[cpu->ProgramCounter];
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cpu->B = cpu->Program[cpu->ProgramCounter];
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break;
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break;
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case 0x2F:
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case 0x28:
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// CCF - Clear the Carry Flag.
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// CCF - Clear the Carry Flag.
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cpu->Status &= ~0x01;
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cpu->Status &= ~0x01;
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break;
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break;
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