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STACK.MAC
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STACK.MAC
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;
; STACK.MAC - Stack Manipulation
;
; 97/12/28
;
; SP@ SP! RP@ RP! >R R> R@ 2>R 2R> 2R@ DROP DUP ?DUP
; SWAP OVER ROT ROLL PICK 2DROP 2DUP 2SWAP 2OVER 2ROT
; DEPTH
;
; SP@ ( -- addr )
hdr 3,'SP@'
spat: ld hl,0
add hl,sp
jp hpush
; SP! ( addr -- )
hdr 3,'SP!'
spsto: pop hl
ld sp,hl
jp next
; RP@ ( -- addr )
hdr 3,'RP@'
rpat: ld hl,(rpp)
jp hpush
; RP! ( addr -- )
hdr 3,'RP!'
rpsto: pop hl
ld (rpp),hl
jp next
; >R ( x -- )
hdr 2,'>R'
tor: ld hl,(rpp)
pop de
dec hl
ld (hl),d
dec hl
ld (hl),e
ld (rpp),hl
jp next
; R> ( -- x )
hdr 2,'R>'
fromr: ld hl,(rpp)
ld e,(hl)
inc hl
ld d,(hl)
inc hl
ld (rpp),hl
push de
jp next
; R@ ( -- x )
hdr 2,'R@'
rat: ld hl,(rpp)
jp at1
; 2>R ( x1 x2 -- )
hdr 3,'2>R'
ttor: ld hl,(rpp)
ld de,-4
add hl,de
ld (rpp),hl
jp tstor1
; 2R> ( -- x1 x2 )
hdr 3,'2R>'
tfrom: ld hl,(rpp)
push hl
ld de,4
add hl,de
ld (rpp),hl
jp tat
; 2R@ ( -- x1 x2 )
hdr 3,'2R@'
trat: ld hl,(rpp)
jp tat1
; DROP ( x -- )
hdr 4,'DROP'
drop: pop hl
jp next
; DUP ( x -- x x )
hdr 3,'DUP'
dup: pop hl
push hl
jp hpush
; ?DUP ( x -- 0 | x x )
hdr 4,'?DUP'
qdup: pop hl
ld a,l
or h
jp z,hpush
push hl
jp hpush
; SWAP ( x1 x2 -- x2 x1 )
hdr 4,'SWAP'
swap: pop hl
ex (sp),hl
jp hpush
; OVER ( x1 x2 -- x1 x2 x1 )
hdr 4,'OVER'
over: pop de
pop hl
push hl
jp dpush
; ROT ( x1 x2 x3 -- x2 x3 x1 )
hdr 3,'ROT'
rot: pop de
pop hl
ex (sp),hl
jp dpush
; ROLL ( xu xn .. x0 u -- xn .. x0 xu )
hdr 4,'ROLL'
roll: pop hl
add hl,hl
ld e,l
ld d,h
add hl,sp
push bc
ld c,(hl)
inc hl
ld b,(hl)
push bc
ld c,e
ld b,d
ld e,l
ld d,h
inc de
dec hl
call movu1
pop hl
pop bc
ex (sp),hl
jp next
; PICK ( xu .. x1 x0 u -- xu .. x1 x0 xu )
hdr 4,'PICK'
pick: pop hl
add hl,hl
add hl,sp
jp at1
; 2DROP ( xd -- )
hdr 5,'2DROP'
tdrop: pop hl
pop hl
jp next
; 2DUP ( xd -- xd xd )
hdr 4,'2DUP'
tdup: pop hl
pop de
push de
push hl
jp dpush
; 2SWAP ( xd1 xd2 -- xd2 xd1 )
hdr 5,'2SWAP'
tswap: pop de
pop hl
inc sp
inc sp
ex (sp),hl
dec sp
dec sp
ex de,hl
ex (sp),hl
jp dpush
; 2OVER ( xd1 xd2 -- xd1 xd2 xd1 )
hdr 5,'2OVER'
tover: ld hl,4
add hl,sp
jp tat1
; 2ROT ( xd1 xd2 xd3 -- xd2 xd3 xd1 ) 5 roll 5 roll
hdr 4,'2ROT'
trot: call docol
dw clit
db 5
dw roll
dw clit
db 5
dw roll
dw exit
; DEPTH ( -- u ) sp@ s0 @ swap - 2/
hdr 5,'DEPTH'
depth: call docol
dw spat
dw szero,at
dw swap,subb
dw twodiv
dw exit
; end