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Atari coding BBS
| carry overflow step decision |
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Posted by: ROGer
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Mar,08.2025-14:02
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I have a word-sized (constant) fractional value in a data register (d0) and sum that up in a loop (add.w d0,dn) and everytime the carry bit is set I take action (e.g. moving one step in x direction). Is there a (smart) way to do this with "rounding"? So to say - and if I am not mistaken - to take action when the carry condition is fulfilled to its half? Could the overflow bit be of value?
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