Mill Computing, Inc. Forums The Mill Architecture Introduction to the Mill CPU Programming Model Reply To: Introduction to the Mill CPU Programming Model

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I was attempting to write a few programs using this model but I ran into a problem I couldn’t solve. I might be overlooking something but I found that if you have an instruction that conditionally pushes something onto the belt, you can no longer know the indices of the other belt positions. For example…
If you had this code:

add b0, b1
if(cond) {b0++}

And you wanted to read the result from the addition, how do you know whether to read it from b0 or b1? I’m thinking you’d have to restore the result if the condition is true but that could potentially double code size…
Hopefully there’s a simple solution.