2010-12-03 11:32:16 +01:00
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#! /usr/bin/gforth
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2010-12-21 19:31:35 +01:00
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\
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\ here-allokation wird als fifo verwendet.
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\
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2010-12-10 01:04:21 +01:00
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: copy ( addrdst addrsrc len -- addrdstend )
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over ( dst src len src ) + swap ( dst end src )
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do ( dst+ )
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i ( dst+ src+ ) c@ ( dst+ chr )
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over ( dst+ chr dst+ ) c! ( dst+ ) 1+
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loop
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;
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2010-12-21 19:31:35 +01:00
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: <presentation> ( -- 0 addr0 ) 0 here ;
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2010-12-23 22:30:28 +01:00
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: </presentation> ( 0 <addr...> -- faddr laddr paddr 0 )
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here .s \ 0 <addr...> faddr
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begin swap dup \ 0 <addr..> addr0 faddr
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while
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s" New page at " type here . s" to " type dup . newline type
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, \ 0 <addr..> faddr
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repeat .s
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drop \ faddr
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here dup 0 \ faddr laddr paddr 0
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2010-12-21 19:31:35 +01:00
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;
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: csi ( -- ) 27 emit 91 emit ;
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: sgr ( u -- ) csi 0 0 d.r 109 emit ;
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: beep 7 type ;
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\ Es folgen ein paar blockorientierte Kennzeichnungen.
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2010-12-23 22:30:28 +01:00
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: {h} ( addr -- addr ) ;
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: {/h} ( addr -- addr ) ;
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: {p} ( addr -- addr ) ;
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: {/p} ( addr -- addr ) ;
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: <h> ( -- addr u0 ) ['] {h} , here 0 ;
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: </h> ( addr len -- ) ['] {/h} , swap ! ;
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: <p> ( -- addr u0 ) ['] {p} , here 0 ;
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: </p> ( addr len -- ) ['] {/p} , swap ! ;
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2010-12-21 19:31:35 +01:00
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\ Es folgen ein paar syntaktische Textauszeichnungen.
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2010-12-23 22:30:28 +01:00
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: {i} ( addr -- addr ) 7 sgr ;
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: {/i} ( addr -- addr ) 27 sgr ;
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: {b} ( addr -- addr ) 1 sgr ;
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: {/b} ( addr -- addr ) 22 sgr ;
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: {u} ( addr -- addr ) 4 sgr ;
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: {/u} ( addr -- addr ) 24 sgr ;
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: {fc} ( addr -- addr ) dup @ 30 + sgr 1 cells + ;
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: {/fc} ( addr -- addr ) 39 sgr ;
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: {bc} ( addr -- addr ) dup @ 40 + sgr 1 cells + ;
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: {/bc} ( addr -- addr ) 49 sgr ;
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: <i> ( -- ) ['] {i} , ;
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: </i> ( -- ) ['] {/i} , ;
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: <u> ( -- ) ['] {u} , ;
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: </u> ( -- ) ['] {/u} , ;
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: <b> ( -- ) ['] {b} , ;
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: </b> ( -- ) ['] {/b} , ;
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: <fc> ( -- ) ['] {fc} , ;
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: </fc> ( -- ) ['] {/fc} , ;
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: <bc> ( -- ) ['] {bc} , ;
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: </bc> ( -- ) ['] {/bc} , ;
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2010-12-21 19:31:35 +01:00
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: <np> ( -- addr ) \ Wir legen jede Anfangsadresse einer Seite auf den Stack (Achtung, in umgekehrter Reihenfolge
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here
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;
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2010-12-10 14:23:29 +01:00
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\ : <+> ( addr1 len1 addr2 len2 -- addrdst lendst )
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\ rot 2dup + here ( addr1 addr2 len2 len1 lendst addrdst )
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\ 2-rot -rot ( lendst addrdst addr1 len1 addr2 len2 )
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\ 2swap 2rot ( addr2 len2 addr1 len1 lendst addrdst )
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\ 2dup chars allot ( dst allocated )
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\ copy copy
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\ ;
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2010-12-21 19:31:35 +01:00
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: !! ( len0 addr1 len1 -- len )
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1 ,
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dup \ len0 addr1 len1 len1
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rot , , \ len0 len1 len1 addr1 -> len0 len1
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+
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;
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\ faddr: erste Seitenzeigeradresse (letzte Presentationsseite)
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\ laddr: letzte Seitenzeigeradresse (erste Presentationsseite)
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\ paddr: derzeitige Seitenzeigeradresse
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2010-12-03 11:32:16 +01:00
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2010-12-21 19:31:35 +01:00
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: page_steps ( laddr paddr 0 [u] -- laddr naddr )
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\ u muss ungleich 0 sein. falls u nicht vorhanden: 1
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2010-12-23 22:30:28 +01:00
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dup 0= if 1 then \ laddr paddr 0 u
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nip cells -
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2010-12-21 19:31:35 +01:00
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;
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: validpage? ( faddr laddr paddr -- faddr laddr paddr u )
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2dup > \ faddr laddr paddr u
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2010-12-23 22:30:28 +01:00
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2over drop rot tuck <
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rot and
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2010-12-21 19:31:35 +01:00
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;
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: showpage' ( paddr -- )
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2010-12-23 22:30:28 +01:00
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dup cell+ \ paddr paddr+cell
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@ swap @ \ naddr addr \ Seiteninhaltsadressen
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0 sgr \ Alle Bildschirmeigenschaften zuruecksetzen
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\ csi s" 2J" type \ Bildschirm leeren
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begin 2dup >
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while
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dup cell+ swap \ naddr xtaddr xtaddr
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@ \ naddr xtaddr xt
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execute \ verschiebt eventuell den Zeiger noch weiter, wenn es Parameter erwartet.
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repeat
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drop drop
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2010-12-21 19:31:35 +01:00
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;
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: showpage ( faddr laddr paddr -- faddr laddr paddr 0 )
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validpage?
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2010-12-23 22:30:28 +01:00
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0= if beep then
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dup showpage' 0
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2010-12-21 19:31:35 +01:00
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;
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2010-12-23 22:30:28 +01:00
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: n ( faddr laddr paddr 0 [u] -- faddr laddr paddr 0 )
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page_steps \ faddr laddr paddr x
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2010-12-21 19:31:35 +01:00
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showpage
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;
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: g ( faddr laddr paddr 0 u -- faddr laddr paddr 0 )
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cells
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showpage
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;
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2010-12-23 22:30:28 +01:00
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: p ( faddr laddr paddr 0 [u] -- faddr laddr paddr 0 )
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2010-12-21 19:31:35 +01:00
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negate n
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;
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2010-12-03 11:32:16 +01:00
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2010-12-10 01:04:21 +01:00
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<presentation>
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2010-12-15 21:26:58 +01:00
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<h> s" Dies ist eine Testpresentation" !! </h>
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<p>
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s" Eines Tages hatten wir (" !! <i> s" Harald Steinlechner" !! </i>
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s" und" !! <i> s" Denis Knauf" !! </i>
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s" die tolle Idee, eine Presentationssoftware zu schreiben" !!
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</p>
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2010-12-10 01:04:21 +01:00
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<np>
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2010-12-15 21:26:58 +01:00
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<h> s" Ergebnis:" !! </h>
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<p> <b> s" Das hier" !! </b> </p>
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2010-12-10 01:04:21 +01:00
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<np>
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2010-12-15 21:26:58 +01:00
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<p> s" Sieht doch garnicht so schlecht aus" !! </p>
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2010-12-10 01:04:21 +01:00
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</presentation>
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2010-12-21 19:31:35 +01:00
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( bye
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2010-12-10 01:04:21 +01:00
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\ presentation ist gestartet: erste Seite wird angezeigt
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n \ zweite Seite
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p \ erste Seite
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2 n \ dritte Seite
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2010-12-21 19:31:35 +01:00
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)
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