On 7/18/2018 4:12 PM, David Crayford wrote:

NI FLAG1,X'FF'-BIT1

I often did this to try to help the next poor soul forced to look at my code:

NOT      EQU   X'FF'
         NI    FLAG1,NOT-BIT1

I'm not sure where I first saw that method - maybe from bits of UCC source code we were given in the 1980's. I always thought those folks had a good, readable style of assembler coding.

As for the -16, I guessed at what it was doing but to be sure I had to get out my trusty hex calculator - also from the 1980's.

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