XBYTE question

cgracey

ozpropdev wrote: »

cgracey wrote: »

So, Z = 1 if pins x and y are both low, and C = !C if pin x is high?

I believe that's what Cluso was looking for.

Well, that could be done in two instructions:

        test    ina/inb,twobitmask    wz
        testp   onepin                xorc

We need to know, for sure, what is needed.

ozpropdev

cgracey wrote: »

Well, that could be done in two instructions:

        test    ina/inb,twobitmask    wz
        testp   onepin                xorc

We need to know, for sure, what is needed.

Oh yes, the good old faithful TEST instruction.
I'm way too focused on the new P2 stuff and forgot about the original P1 stuff.

Cluso99

Sorry, been busy. I need to spend a little more time to rethink if it's possible to replace the 3 instructions, or if it's only possible to replace 2, using a simple instruction. I'd like it to be of general use too.

TonyB_

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