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forth: Forth-ify ","

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This commit is contained in:
Virgil Dupras 2020-03-31 15:26:43 -04:00
parent 7d5b1f5cea
commit 1e85d60d89
3 changed files with 12 additions and 20 deletions
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BIN
emul/forth/z80c.bin
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17
forth/forth.asm
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@ -126,24 +126,11 @@ CBR:
ld (IP), hl
jp next
.db ","
.dw $-CBR
.db 1
WR:
.dw nativeWord
pop de
call chkPS
ld hl, (HERE)
ld (hl), e
inc hl
ld (hl), d
inc hl
ld (HERE), hl
jp next
.fill 23
; ( addr -- )
.db "EXECUTE"
.dw $-WR
.dw $-CBR
.db 7
EXECUTE:
.dw nativeWord

15
forth/icore.fs
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@ -146,6 +146,11 @@
[ 48 @ LITN ] _c @ EXECUTE
;
: ,
_c HERE _c @ _c !
_c HERE _c @ 2 _c + _c HERE _c !
;
: C,
_c HERE _c @ _c C!
_c HERE _c @ 1 _c + _c HERE _c !
@ -191,7 +196,7 @@
_c DUP _c HERE _c ! ( h h' )
_c SWAP _c - ( sz )
( write prev value )
_c HERE _c @ _c CURRENT _c @ _c - ,
_c HERE _c @ _c CURRENT _c @ _c - _c ,
( write size )
_c C,
_c HERE _c @ _c CURRENT _c !
@ -225,7 +230,7 @@
it to avoid bootstrapping issues )
: LITN
( 32 == NUMBER )
32 , ,
32 _c , _c ,
;
( : and ; have to be defined last because it can't be
@ -236,19 +241,19 @@
_c (entry)
( We cannot use LITN as IMMEDIATE because of bootstrapping
issues. 32 == NUMBER 14 == compiledWord )
[ 32 , 14 , ] ,
[ 32 , 14 , ] _c ,
BEGIN
_c WORD
_c (find)
( is word )
IF _c DUP _c IMMED? IF EXECUTE ELSE , THEN
IF _c DUP _c IMMED? IF EXECUTE ELSE _c , THEN
( maybe number )
ELSE _c (parse*) _c @ EXECUTE _c LITN THEN
AGAIN
; IMMEDIATE
: Y
['] EXIT ,
['] EXIT _c ,
_c R> _c DROP ( exit : )
; IMMEDIATE