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-rw-r--r--amforth-6.5/avr8/words/swap.asm16
1 files changed, 16 insertions, 0 deletions
diff --git a/amforth-6.5/avr8/words/swap.asm b/amforth-6.5/avr8/words/swap.asm
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--- /dev/null
+++ b/amforth-6.5/avr8/words/swap.asm
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+; ( n1 n2 -- n2 n1)
+; Stack
+; swaps the two top level stack cells
+VE_SWAP:
+ .dw $ff04
+ .db "swap"
+ .dw VE_HEAD
+ .set VE_HEAD = VE_SWAP
+XT_SWAP:
+ .dw PFA_SWAP
+PFA_SWAP:
+ movw temp0, tosl
+ loadtos
+ st -Y, temp1
+ st -Y, temp0
+ jmp_ DO_NEXT