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/rshift.asm | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 amforth-6.5/avr8/words/rshift.asm (limited to 'amforth-6.5/avr8/words/rshift.asm') diff --git a/amforth-6.5/avr8/words/rshift.asm b/amforth-6.5/avr8/words/rshift.asm new file mode 100644 index 0000000..e0e2231 --- /dev/null +++ b/amforth-6.5/avr8/words/rshift.asm @@ -0,0 +1,22 @@ +; ( n1 n2 -- n3 ) +; Arithmetics +; shift n1 n2-times logically right +VE_RSHIFT: + .dw $ff06 + .db "rshift" + .dw VE_HEAD + .set VE_HEAD = VE_RSHIFT +XT_RSHIFT: + .dw PFA_RSHIFT +PFA_RSHIFT: + movw zl, tosl + loadtos +PFA_RSHIFT1: + sbiw zl, 1 + brmi PFA_RSHIFT2 + lsr tosh + ror tosl + rjmp PFA_RSHIFT1 +PFA_RSHIFT2: + jmp_ DO_NEXT + -- cgit v1.2.3