3 ms·
JRO UP? As in pulling in a value from the up port. I didn't see how that gives me a whole lot since wouldn't I need to know in the other node what the offset wo
by chinpokomon 11y ago
JRO UP? As in pulling in a value from the up port. I didn't see how that gives me a whole lot since wouldn't I need to know in the other node what the offset would be? I considered that this would be valid, but I couldn't see a way to make it really useful.
- obstinate 11y agoIt allows you to use another processor to do control flow based on an input, freeing up cpu time. For example, suppose you wanted to emit to DOWN: 0 if LEFT is <= 0 UP if LEFT is > 0 So you have two options S: MOV LEFT ACC JGE E MOV 0 DOWN MOV UP NIL JMP S E: MOV UP DOWN Or you could do this: S: JRO LEFT MOV UP NIL MOV 0 DOWN JMP S MOV UP DOWN And left would send 1 if its value is <= 0, or 4 if it's >0. In this case it only saves one cycle for the node under consideration, but it could be a good deal more if the conditional is more involved.