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forth: Forth-ify "C<"
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@ -126,6 +126,7 @@ LIT:
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; 35
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jp strcmp
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.dw RS_ADDR
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.dw CINPTR
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; *** Code ***
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forthMain:
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@ -149,16 +150,6 @@ forthMain:
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ld hl, .parseName
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call find
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ld (PARSEPTR), de
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; Set up CINPTR
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; do we have a (c<) impl?
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ld hl, .cinName
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call find
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jr z, .skip
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; no? then use KEY
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ld hl, .keyName
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call find
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.skip:
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ld (CINPTR), de
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; Set up SYSVNXT
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ld hl, SYSVBUF
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ld (SYSVNXT), hl
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@ -169,14 +160,10 @@ forthMain:
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.parseName:
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.db "(parse)", 0
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.cinName:
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.db "(c<)", 0
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.keyName:
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.db "KEY", 0
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.bootName:
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.db "BOOT", 0
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.fill 68
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.fill 93
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; STABLE ABI
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; Offset: 00cd
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@ -764,24 +751,10 @@ FIND_:
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push de
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jp next
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; This is an indirect word that can be redirected through "CINPTR"
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; code: it is replaced in readln.fs.
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.db "C<"
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.dw $-FIND_
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.db 2
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CIN:
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.dw compiledWord
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.dw NUMBER
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.dw CINPTR
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.dw FETCH
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.dw EXECUTE
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.dw EXIT
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.fill 24
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.fill 41
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.db "NOT"
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.dw $-CIN
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.dw $-FIND_
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.db 3
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NOT:
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.dw nativeWord
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@ -75,6 +75,11 @@
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LIT< stack-underflow _c (print) _c ABORT
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;
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: C<
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( JTBL+40 == CINPTR )
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[ JTBL 40 + @ LITN ] @ EXECUTE
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;
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: C,
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HERE @ _c C!
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HERE @ 1 _c + HERE !
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@ -87,7 +92,7 @@
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: TOWORD
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BEGIN
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C< _c DUP _c WS? NOT IF EXIT THEN DROP
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_c C< _c DUP _c WS? NOT IF EXIT THEN DROP
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AGAIN
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;
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@ -102,7 +107,7 @@
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always zero to pre-write our null-termination )
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_c OVER ! ( a )
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1 _c + ( a+1 )
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C< ( a c )
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_c C< ( a c )
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_c DUP _c WS?
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UNTIL
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( a this point, PS is: a WS )
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@ -147,6 +152,9 @@
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;
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: BOOT
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LIT< (c<) (find) NOT IF LIT< KEY (find) DROP THEN
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( JTBL+40 == CINPTR )
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[ JTBL 40 + @ LITN ] !
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LIT< (c<$) (find) IF EXECUTE ELSE DROP THEN
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_c INTERPRET
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;
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