2009-11-04 18:17:00 +00:00
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;
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; Ullrich von Bassewitz, 2010-11-03
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;
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; CC65 library: 16x16 => 32 signed multiplication
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;
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2019-03-29 22:36:01 +01:00
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.export _imul16x16r32
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2009-11-04 18:17:00 +00:00
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.import imul16x16r32, popax
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2009-11-04 19:41:54 +00:00
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.include "zeropage.inc"
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2009-11-04 18:17:00 +00:00
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;---------------------------------------------------------------------------
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; 16x16 => 32 signed multiplication routine.
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2019-03-29 22:36:01 +01:00
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.proc _imul16x16r32
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2009-11-04 18:17:00 +00:00
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sta ptr1
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stx ptr1+1
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jsr popax
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jmp imul16x16r32
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.endproc
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