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Changed ADD to clear and populate carry.

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Run/Step only when not halted.
Reversed speed control.
This commit is contained in:
Sam Stevens
2018-11-12 21:36:22 +00:00
parent 7aa4aa79fb
commit 0895ce02b2
5 changed files with 45 additions and 26 deletions
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8
arduino/VM.c
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@@ -71,6 +71,9 @@ inline uint16_t vm_get_rx(VM *vm, uint8_t r) {
}
inline void vm_put_r(VM *vm, uint8_t r, uint8_t v) {
if (r == 0) {
return;
}
if (r < VM_REG_SIZE) {
vm->R[r] = v;
}
@@ -164,12 +167,7 @@ void vm_step(VM *vm) {
rd = inst.imm;
break;
case OP_ADD:
vm_decode_S(&inst, raw);
vm->carry = 0;
rx = vm_get_r(vm, inst.rx);
ry = vm_get_r(vm, inst.ry);
rd = rx + ry;
break;
case OP_ADC:
vm_decode_S(&inst, raw);
rx = vm_get_r(vm, inst.rx);