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Add words: fill nip

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Piotr Wiszowaty 2014-08-28 18:32:03 +02:00 committed by Piotr Wiszowaty
parent c19c3544dd
commit 259dc66d0e
1 changed files with 53 additions and 0 deletions
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@ -805,6 +805,17 @@ basewords_text = """
jmp next
[end-code] ;
: nip
[code]
lda pstack,x
sta pstack+2,x
inx
lda pstack,x
sta pstack+2,x
inx
jmp next
[end-code] ;
: while
[code]
lda pstack,x
@ -1030,6 +1041,48 @@ cmove_done
jmp next
[end-code] ;
: fill ( c-addr u c -- )
[code]
lda pstack,x
inx
sta w
inx
lda pstack,x
inx
sta cntr
lda pstack,x
inx
sta cntr+1
lda pstack,x
inx
sta z
lda pstack,x
inx
sta z+1
ldy #0
lda cntr+1
beq fill_tail
lda w
fill_loop_1
sta (z),y
iny
bne fill_loop_1
inc z+1
dec cntr+1
bne fill_loop_1
fill_tail
lda cntr
beq fill_done
lda w
fill_loop_2
sta (z),y
iny
dec cntr
bne fill_loop_2
fill_done
jmp next
[end-code] ;
: dup ( x -- x x )
[code]
ldy pstack,x