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forth: Forth-ify "IMMED?"

This commit is contained in:
Virgil Dupras 2020-03-27 21:58:24 -04:00
parent 8f990ff954
commit 408d93bd23
4 changed files with 15 additions and 19 deletions
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BIN
emul/forth/z80c.bin
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20
forth/forth.asm
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@ -781,27 +781,11 @@ DOES:
jp EXIT+2 jp EXIT+2
.fill 23 .fill 51
.db "IMMED?"
.dw $-DOES
.db 6
ISIMMED:
.dw nativeWord
pop hl
call chkPS
dec hl
ld de, 0
bit FLAG_IMMED, (hl)
jr z, .notset
inc de
.notset:
push de
jp next
; ( n -- ) ; ( n -- )
.db "LITN" .db "LITN"
.dw $-ISIMMED .dw $-DOES
.db 4 .db 4
LITN: LITN:
.dw nativeWord .dw nativeWord

2
forth/icore.fs
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@ -113,7 +113,7 @@
WORD WORD
(find) (find)
( is word ) ( is word )
IF DUP IMMED? IF EXECUTE ELSE , THEN IF DUP _c IMMED? IF EXECUTE ELSE , THEN
( maybe number ) ( maybe number )
ELSE (parse*) @ EXECUTE LITN THEN ELSE (parse*) @ EXECUTE LITN THEN
AGAIN AGAIN

12
forth/z80c.fs
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@ -233,3 +233,15 @@ CODE IMMEDIATE
HL DECss, HL DECss,
7 (HL) SETbr, 7 (HL) SETbr,
;CODE ;CODE
CODE IMMED?
HL POPqq,
chkPS,
HL DECss,
DE 0 LDddnn,
7 (HL) BITbr,
3 JRZe, ( notset )
DE INCss,
( notset )
DE PUSHqq,
;CODE