Archive: 1 post

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I'm using a string of BCDs (binary-coded digits) for a display, so I can add/subtract, and do all that fun stuff. I've got the addition and subtraction taken care of, and it works pretty well except handling the overflow. I'm not quite sure how to handle overflow. I'm guessing that if I go above 1001, then I should just add 0001 to my next display digit. Then subtract 1010 from the current one. so say I have 8+4 that gives me 12 (1100), so I send a 0001 addition to the tens BCD. Then I subtract 1010 from my 1100 leaving me 0010. Is that correct? On the other end, when it comes to dropping below 0, I am at a complete loss for what to do. Is using a string of BCDs the easiest way to go, or is there another way that would be simpler for creating a scoreboard type object?

2011-01-29 21:23:00 Author: tdarb Posts: 689

Posts: 1077139    Threads: 69970    Members: 9661    Archive-Date: 2019-01-19

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