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-rw-r--r--amforth-6.5/avr8/words/d-2star.asm20
1 files changed, 20 insertions, 0 deletions
diff --git a/amforth-6.5/avr8/words/d-2star.asm b/amforth-6.5/avr8/words/d-2star.asm
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--- /dev/null
+++ b/amforth-6.5/avr8/words/d-2star.asm
@@ -0,0 +1,20 @@
+; ( d1 -- d2 )
+; Arithmetics
+; shift a double cell left
+VE_D2STAR:
+ .dw $ff03
+ .db "d2*",0
+ .dw VE_HEAD
+ .set VE_HEAD = VE_D2STAR
+XT_D2STAR:
+ .dw PFA_D2STAR
+PFA_D2STAR:
+ ld temp0, Y+
+ ld temp1, Y+
+ lsl temp0
+ rol temp1
+ rol tosl
+ rol tosh
+ st -Y, temp1
+ st -Y, temp0
+ jmp_ DO_NEXT