From 67d25d837ac55f28a366c0a3b262e439a6e75fc3 Mon Sep 17 00:00:00 2001 From: Dimitri Sokolyuk Date: Sat, 19 Aug 2017 12:15:28 +0200 Subject: Add AmForth --- amforth-6.5/avr8/words/qdup.asm | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) create mode 100644 amforth-6.5/avr8/words/qdup.asm (limited to 'amforth-6.5/avr8/words/qdup.asm') diff --git a/amforth-6.5/avr8/words/qdup.asm b/amforth-6.5/avr8/words/qdup.asm new file mode 100644 index 0000000..e65640b --- /dev/null +++ b/amforth-6.5/avr8/words/qdup.asm @@ -0,0 +1,17 @@ +; ( n1 -- [ n1 n1 ] | 0) +; Stack +; duplicate TOS if non-zero +VE_QDUP: + .dw $ff04 + .db "?dup" + .dw VE_HEAD + .set VE_HEAD = VE_QDUP +XT_QDUP: + .dw PFA_QDUP +PFA_QDUP: + mov temp0, tosl + or temp0, tosh + breq PFA_QDUP1 + savetos +PFA_QDUP1: + jmp_ DO_NEXT -- cgit v1.2.3