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cc65/libsrc/common/cc65_umul16x16r32.s

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;
; Ullrich von Bassewitz, 2010-11-03
;
; CC65 library: 16x16 => 32 unsigned multiplication
;
.export _cc65_umul16x16r32
.import umul16x16r32, popax
.include "zeropage.inc"
;---------------------------------------------------------------------------
; 16x16 => 32 unsigned multiplication routine.
.proc _cc65_umul16x16r32
sta ptr1
stx ptr1+1
jsr popax
jmp umul16x16r32
.endproc