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- | prabs. converts both args to unsigned, and
- | remembers result sign as sign a eor sign b
- | used only by divide support
- | result d contains right, sign is non-zero
- | if result (from divide) should be negative.
- |
- |
- .globl prabs
- left=8.
- right=4.
- sign=3.
- prabs: clr sign(s)
- ldd left(s)
- bge tryr
- nega
- negb
- sbca #0
- std left(s)
- inc sign(s)
- tryr: ldd right(s)
- bge done
- nega
- negb
- sbca #0
- dec sign(s)
- std right(s)
- done: rts
-