--- /dev/null
+;
+; Ullrich von Bassewitz, 2011-07-10
+;
+; CC65 library: 16x8 => 32 unsigned multiplication
+;
+
+ .export _umul16x8r32
+ .import umul8x16r24, popax
+
+ .include "zeropage.inc"
+
+
+;---------------------------------------------------------------------------
+; 16x8 => 32 unsigned multiplication routine. We use 8x16 => 24 and clear
+; the high byte of the result
+
+.proc _umul16x8r32
+
+ sta ptr1
+ lda #0
+ sta sreg+1 ; Clear high byte of result
+ jsr popax
+ jmp umul8x16r24
+
+.endproc
+
+