mirror of
https://github.com/forth-ev/VolksForth.git
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137 lines
8.4 KiB
Forth
137 lines
8.4 KiB
Forth
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\ *** Block No. 0 Hexblock 0
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\ Erweiterte I/O-Funktionen 3.80a UH 08Oct87
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Dieses File enthaelt Definitionen, die eine erweiterte Bild-
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schirmdarstellung ermoeglichen:
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- Installation eines Terminals mit Hilfe des Wortes
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"Terminal:"
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- Editieren von Eingabezeilen
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In der Version 3.80a sind diese Teile aus dem Kern genommen
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worden, um diesen einfacher zu gestalten.
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\ *** Block No. 1 Hexblock 1
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\ Erweiterte I/O-Funktionen 3.80a LOAD-Screen UH 20Nov87
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1 3 +thru \ Erweiterte Ausgabe
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4 6 +thru \ Erweiterte Eingabe
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' curon Is postlude
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\ *** Block No. 2 Hexblock 2
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\ Erweiterte Ausgabe: Terminal-Defintionen UH 08OCt87
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| Variable terminal
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: Term: ( off -- off' ) Create dup c, 2+
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Does> c@ terminal @ + perform ;
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: Terminal: Create: Does> terminal ! ;
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0 Term: curon Term: curoff
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Term: rvson Term: rvsoff
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Term: dark Term: locate drop
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: curleft ( -- ) at? 1- at ;
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: currite ( -- ) at? 1+ at ;
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Terminal: dumb noop noop noop noop noop 2drop ; dumb
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\ *** Block No. 3 Hexblock 3
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\ Erweiterte Ausgabe: UH 06Mar88
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&80 Constant c/row &24 Constant c/col
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| Create 'at 0 , here 0 , | Constant 'row ' 'at | Alias 'col
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: (at ( row col -- ) c/row 1- min swap c/col 1- min swap
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2dup 'at 2! locate ;
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: (at? ( -- row col ) 'at 2@ ;
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: (page ( -- ) 0 0 'at 2! dark ;
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: (type ( addr len -- ) dup 'col +!
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0 ?DO count (emit LOOP drop ;
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: (emit ( c -- ) 1 'col +! (emit ;
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\ *** Block No. 4 Hexblock 4
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\ Erweiterte Ausgabe: UH 04Mar88
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: (cr ( -- ) 'row @ 1+ 0 'at 2! (cr ;
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: (del ( -- ) 'col @ 0> 0=exit -1 'col +! (del ;
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' (emit ' display 2+ !
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' (cr ' display 4 + !
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' (type ' display 6 + !
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' (del ' display 8 + !
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' (page ' display &10 + !
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' (at ' display &12 + !
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' (at? ' display &14 + !
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\ *** Block No. 5 Hexblock 5
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\ Erweiterte Eingabe UH 08OCt87
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| Variable maxchars | Variable oldspan oldspan off
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| : redisplay ( addr pos -- )
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at? 2swap under + span @ rot - type space at ;
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| : del ( addr pos1 -- ) dup >r + dup 1+ swap
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span @ r> - 1- cmove -1 span +! ;
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| : ins ( addr pos1 -- ) dup >r + dup dup 1+
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span @ r> - cmove> bl swap c! 1 span +! ;
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| : (ins ( a p1 -- a p2 ) 2dup ins 2dup redisplay ;
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| : (del ( a p1 -- a p2 ) 2dup del 2dup redisplay ;
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| : (back ( a p1 -- a p2 ) 1- curleft (del ;
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| : (recall ( a p1 -- a p2 ) ?dup ?exit
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oldspan @ span ! 0 2dup redisplay ;
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\ *** Block No. 6 Hexblock 6
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\ Tastenbelegung fuer Zeilen-Editor CP/M UH 18Mar88
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: (decode ( addr pos1 key -- addr pos2 )
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4 case? IF dup span @ < 0=exit currite 1+ exit THEN
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&19 case? IF dup 0=exit curleft 1- exit THEN
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&22 case? IF dup span @ = ?exit (ins exit THEN
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#bs case? IF dup 0=exit (back exit THEN
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#del case? IF dup 0=exit (back exit THEN
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7 case? IF span @ 2dup < and 0=exit (del exit THEN
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$1B case? IF (recall exit THEN
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#cr case? IF span @ dup maxchars ! oldspan !
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dup at? rot span @ - - at space exit THEN
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dup emit >r 2dup + r> swap c! 1+ dup span @ max span ! ;
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: (expect ( addr len -- ) maxchars ! span off 0
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BEGIN span @ maxchars @ u< WHILE key decode REPEAT 2drop ;
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\ *** Block No. 7 Hexblock 7
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\ Patch UH 08Oct87
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: (key ( -- char )
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curon BEGIN pause (key? UNTIL curoff getkey ;
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' (key ' keyboard 2+ !
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' (decode ' keyboard 6 + !
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' (expect ' keyboard 8 + !
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