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29 lines
452 B
ArmAsm
29 lines
452 B
ArmAsm
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; Ullrich von Bassewitz, 07.08.1998
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; CC65 runtime: modulo operation for unsigned ints
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;
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.export tosumoda0, tosumodax
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.import popsreg, udiv16
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.importzp ptr1, ptr4
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tosumoda0:
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ldx #0
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tosumodax:
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sta ptr4
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stx ptr4+1 ; Save right operand
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jsr popsreg ; Get right operand
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; Do the division
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jsr udiv16
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; Result is in sreg, remainder in ptr1
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lda ptr1
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ldx ptr1+1
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rts
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