Search found 3 matches

by simonaj321
Sun Jul 19, 2020 7:30 am
Forum: programming
Topic: False Negative
Replies: 4
Views: 480

Re: False Negative

Thanks for taking the time to post this explanation.
I'll work my way thro it
Working with 8 bits is a challenge!
by simonaj321
Fri Jul 17, 2020 9:08 pm
Forum: programming
Topic: False Negative
Replies: 4
Views: 480

Re: False Negative

Thanks Rob - makes sense :)
by simonaj321
Fri Jul 17, 2020 8:49 pm
Forum: programming
Topic: False Negative
Replies: 4
Views: 480

False Negative

I'm trying to get to grips with 6502 assy.

Can anyone explain why subtracting &64 from &E4 in the acc sets the negative status flag (see attach).

Thanks SJ





neg query.png

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