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Refined the encoding some more.

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glm94
2022-08-26 19:00:37 +00:00
parent eb5e2c506e
commit e4a191a17e
3 changed files with 25 additions and 52 deletions
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src/parser.c
+9 -7
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@@ -132,7 +132,7 @@ void HandleAssemblerDirective(void) {
}
}
//REG XXX0 0XXX
//REG XXX0 0XXX 1010 1111
//Constant XXX0 1XXX
//Address XXX1 0XXX
void HandleOperation(void) {
@@ -144,7 +144,7 @@ void HandleOperation(void) {
printf("[%#05X] %s ", ProgramCounter, inst->lexeme);
Memory[ProgramCounter] |= GetInstructionMask(inst->op, inst->parameter_one);
Memory[ProgramCounter] = GetInstructionMask(inst->op, inst->parameter_one);
ProgramCounter++;
@@ -158,7 +158,7 @@ void HandleOperation(void) {
if (inst->parameter_one & Reg) {
//Encode the register number here.
Memory[ProgramCounter - 1] |= PeekToken()->type - 29;
Memory[ProgramCounter - 1] |= (PeekToken()->type - 29) & 0x07;
printf("%s ", PeekToken()->lexeme);
}
else if (inst->parameter_one & Address || inst->parameter_one & Constant) {
@@ -170,7 +170,8 @@ void HandleOperation(void) {
exit(1);
}
Memory[ProgramCounter - 1] |= 0x10;//0b00010000;
if (inst->op == CMP) Memory[ProgramCounter - 1] |= 0x10;//0b00010000;
Memory[ProgramCounter] = 2 >> symbol->address & 0xFF;
Memory[ProgramCounter + 1] = symbol->address & 0xFF;
@@ -211,7 +212,8 @@ void HandleOperation(void) {
exit(1);
}
Memory[ProgramCounter - 1] |= 0x10;//0b00010000;
if (inst->op == CMP) Memory[ProgramCounter - 1] |= 0x10;//0b00010000;
Memory[ProgramCounter] = 2 >> symbol->address & 0xFF;
Memory[ProgramCounter + 1] = symbol->address & 0xFF;
@@ -221,8 +223,8 @@ void HandleOperation(void) {
Memory[ProgramCounter - 1] |= 0x08; //0b00001000;
int* value = PeekToken()->value;
Memory[ProgramCounter] = 2 >> *value &0xFF;
Memory[ProgramCounter + 1] = *value &0xFF;
Memory[ProgramCounter] = 2 >> *value & 0xFF;
Memory[ProgramCounter + 1] = *value & 0xFF;
printf("%s ", PeekToken()->lexeme);
}