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forth: Forth-ify "@"

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This commit is contained in:
Virgil Dupras 2020-03-30 14:05:07 -04:00
parent f9c3a0444c
commit 8ef9e7d0da
5 changed files with 22 additions and 23 deletions
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BIN
emul/forth/z80c.bin
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16
forth/forth.asm
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@ -857,22 +857,10 @@ STORE:
ld (iy+1), h ld (iy+1), h
jp next jp next
; ( a -- n ) .fill 30
.db "@"
.dw $-STORE
.db 1
FETCH:
.dw nativeWord
pop hl
call chkPS
call intoHL
push hl
jp next
.fill 13
.db "_bend" .db "_bend"
.dw $-FETCH .dw $-STORE
.db 5 .db 5
; Offset: 0647 ; Offset: 0647
.out $ .out $

18
forth/icore.fs
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@ -86,12 +86,12 @@
: C< : C<
( JTBL+40 == CINPTR ) ( JTBL+40 == CINPTR )
[ JTBL 40 + @ LITN ] @ EXECUTE [ JTBL 40 + @ LITN ] _c @ EXECUTE
; ;
: C, : C,
HERE @ _c C! HERE _c @ _c C!
HERE @ 1 _c + HERE ! HERE _c @ 1 _c + HERE !
; ;
( The NOT is to normalize the negative/positive numbers to 1 ( The NOT is to normalize the negative/positive numbers to 1
@ -126,18 +126,18 @@
; ;
: (entry) : (entry)
HERE @ ( h ) HERE _c @ ( h )
_c WORD ( h s ) _c WORD ( h s )
SCPY ( h ) SCPY ( h )
( Adjust HERE -1 because SCPY copies the null ) ( Adjust HERE -1 because SCPY copies the null )
HERE @ 1 _c - ( h h' ) HERE _c @ 1 _c - ( h h' )
_c DUP HERE ! ( h h' ) _c DUP HERE ! ( h h' )
_c SWAP _c - ( sz ) _c SWAP _c - ( sz )
( write prev value ) ( write prev value )
HERE @ CURRENT @ _c - , HERE _c @ CURRENT _c @ _c - ,
( write size ) ( write size )
_c C, _c C,
HERE @ CURRENT ! HERE _c @ CURRENT !
; ;
: INTERPRET : INTERPRET
@ -149,7 +149,7 @@
EXECUTE EXECUTE
0 FLAGS ! 0 FLAGS !
ELSE ELSE
(parse*) @ EXECUTE (parse*) _c @ EXECUTE
THEN THEN
AGAIN AGAIN
; ;
@ -185,7 +185,7 @@
( is word ) ( is word )
IF _c DUP _c IMMED? IF EXECUTE ELSE , THEN IF _c DUP _c IMMED? IF EXECUTE ELSE , THEN
( maybe number ) ( maybe number )
ELSE (parse*) @ EXECUTE _c LITN THEN ELSE (parse*) _c @ EXECUTE _c LITN THEN
AGAIN AGAIN
; IMMEDIATE ; IMMEDIATE

1
forth/z80a.fs
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@ -37,6 +37,7 @@
( -- ) ( -- )
: OP1 CREATE C, DOES> C@ A, ; : OP1 CREATE C, DOES> C@ A, ;
0xeb OP1 EXDEHL,
0x76 OP1 HALT, 0x76 OP1 HALT,
0xc9 OP1 RET, 0xc9 OP1 RET,
0x17 OP1 RLA, 0x17 OP1 RLA,

10
forth/z80c.fs
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@ -213,6 +213,16 @@ CODE /MOD
BC PUSHqq, BC PUSHqq,
;CODE ;CODE
CODE @
HL POPqq,
chkPS,
E (HL) LDrr,
HL INCss,
D (HL) LDrr,
EXDEHL,
HL PUSHqq,
;CODE
CODE C! CODE C!
HL POPqq, HL POPqq,
DE POPqq, DE POPqq,