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I have written a number of division routines in 6502 assembly, and I'm posting them here for other people to use. :) These routines start with any value (0-255) in the accumulator and finish with the integer division result in the accumulator. They are all constant cycles and do not use X or Y. Mos...

I have written a number of division routines in 6502 assembly, and I'm posting them here for other people to use. :) These routines start with any value (0-255) in the accumulator and finish with the integer division result in the accumulator. They are all constant cycles and do not use X or Y. Most...

I just realized that you are storing Absolute,X and not Zeropage,X. In this case a TYA has to be added back in since there is no STY Absolute,X instruction. It now uses 18 bytes which is still not too bad. ldy #$D0-1 sec .loopDivTen: iny sbc #10 bcs .loopDivTen adc #$DA sta StringBuffer+1,X tya sta ...

Oh! Hey, Omegamatrix. I do recognize the name from this thread: http://atariage.com/forums/topic/113254-fast-divide-by-seven/page-5 Off topic: I'd planned to ask a few people eventually, but I've generally operated under the assumption routines posted in threads like that are public domain. Is this...

True, my binary -> decimal routines takes a total of 23 bytes, and I don't think it's possible to shrink it further (it could be simplified if 0-9 digits were 0-9 in the pattern table instead of $d0-$d9 but I don't want to do that). ldy #$00 - cmp #10 bcc + sbc #10 iny ;Y count tens bne - + ora #$d...