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add not register

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This commit is contained in:
Erick
2022-02-04 02:10:58 +01:00
parent 122c5a91a7
commit 298fe805c0
1 changed files with 8 additions and 2 deletions
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tyvm.c
+8 -2
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@@ -61,7 +61,7 @@ enum opcodes { // [name, value]
OP_LDR, // load register, OP_LDR, // load register,
OP_STR, // store register, OP_STR, // store register,
OP_RTI, // unused opcode OP_RTI, // unused opcode
OP_NOT, // bitwise not, OP_NOT, // bitwise not, 1001
OP_LDI, // indirect load, 1010 OP_LDI, // indirect load, 1010
OP_STI, // indirect store, OP_STI, // indirect store,
OP_JMP, // jump, 1100 OP_JMP, // jump, 1100
@@ -180,7 +180,13 @@ int main(int argc, const char* argv[]) {
//{STR}; //{STR};
break; break;
case OP_NOT: case OP_NOT:
//{NOT}; uint16_t dr = (instr >> 9) & 0x7; // destination register
uint16_t sr = (instr >> 6) & 0x7; // source register
reg[dr] = ~(reg[sr]);
update_flags(dr);
break; break;
case OP_LDI: case OP_LDI:
uint16_t dr = (instr >> 9) & 0x7; uint16_t dr = (instr >> 9) & 0x7;