Clock Out Signal

[skimask]

I had already looked at shift.bas but wast not sure if shiftout was the correct method to start with.
Will there be much of an overhead using the shift.bas Shiftout function over the SHIFTOUT function in PBP?

I'd be willing to bet that the compiled SHIFTOUT command looks very similar to the shift.bas program, from a functional standpoint anyways (probably won't have the same labels, jumps, etc., but the flow would be almost identical).
As far as overhead goes, yes, there's overhead. 'cause when you're doing the shiftout, that's all your doing, is shifting out. You can't do anything else (unless you've got interrupts going for you).