base:kernal_floating_point_mathematics
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| Both sides previous revisionPrevious revision | Next revisionBoth sides next revision | ||
| base:kernal_floating_point_mathematics [2019-10-14 09:45] – [Zero Page Locations] silverdr | base:kernal_floating_point_mathematics [2019-10-14 10:07] – [2.4 Division] silverdr | ||
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| **$bb0f** = Divide the memory contents pointed to by A/Y (low/high) by FAC1.\\ | **$bb0f** = Divide the memory contents pointed to by A/Y (low/high) by FAC1.\\ | ||
| - | **$bb12** = Entry if FAC2 already loaded. Accumulator must load FAC1 exponent ($61) beforehand to set the zero flag. | + | **$bb12** = Entry if FAC2 already loaded. Accumulator must load FAC1 exponent ($61) beforehand to set the zero flag. Sign comparison is not performed and ARISGN byte at $6f is not set, which has to be accounted for when using this entry point. Hard to debug sign errors may occur otherwise. |
| Divides FAC2 by FAC1, leaving the quotient in FAC1, and the remainder in FAC2. | Divides FAC2 by FAC1, leaving the quotient in FAC1, and the remainder in FAC2. | ||
base/kernal_floating_point_mathematics.txt · Last modified: 2020-12-06 20:48 by pararaum