mirror of
https://github.com/forth-ev/VolksForth.git
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137 lines
8.7 KiB
Plaintext
137 lines
8.7 KiB
Plaintext
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Screen 0 not modified
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0 cas 10nov05
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1 Video display interface for an ANSI.SYS interface.
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2 It should work on any MS-DOS computer. Since ANSI.SYS does
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3 not have a delete line function, split screen can not
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4 be implemented as usual. Instead, the cursor "rotates"
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5 ie. when a CR is performed on the bottom line, the cursor
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6 moves up to the top line in the current window.
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7
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8
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9
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10
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11
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12
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13
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14
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15
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Screen 1 not modified
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0 \ ansi cursor control cas 10nov05
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1 Onlyforth
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2
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3 | : (char" "lit count bounds DO I c@ charout LOOP ;
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4 | : char" compile (char" ," align ; immediate restrict
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5
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6 | Ascii 0 Constant #0
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7
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8 | : (#S) ( u -- ) &10 /mod #0 + charout #0 + charout ;
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9
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10 : (at ( row col -- ) char" ["
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11 swap 1+ (#S) char" ;" 1+ (#S) char" H" ;
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12
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13 | : )##( ( -- u ) (key #0 - &10 * (key #0 - + ;
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14
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15 1 4 +thru .( ANSI display interface active) cr
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Screen 2 not modified
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0 \ Ansi Standard display output cas 10nov05
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1 | : keydrop (key drop ;
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2
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3 : (at? char" [6n" keydrop keydrop
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4 )##( 1- keydrop )##( 1- keydrop keydrop ;
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5
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6 Variable top top off
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7
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8 : full top off ;
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9
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10 : blankline char" [K" ;
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11 | : lineerase 0 (at blankline ;
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12
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13 : normal char" [0m" ; : invers char" [7m" ;
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14 : underline char" [4m" ; : bright char" [1m" ;
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15
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Screen 3 not modified
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0 \ Ansi Standard display output cas 10nov05
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1
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2 ' 2drop Alias curshape
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3 ' drop Alias setpage
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4 ' (at? Alias curat?
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5
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6 : (type ( addr len -- ) pad place
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7 pad count bounds ?DO I c@ (emit LOOP ;
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8
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9 : (cr top @ 0= adr .status @ ['] noop = and
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10 IF (cr exit THEN row c/col 2- u<
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11 IF row 1+ ELSE top @ THEN lineerase ;
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12
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13 : (page top @ 0= IF char" [2J" exit THEN
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14 top @ c/col 2- DO I lineerase -1 +LOOP ;
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15
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Screen 4 not modified
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0 \ statusline cas 10nov05
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1
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2 ' (cr ' display 4 + ! ' (type ' display 6 + !
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3 ' (page ' display &10 + !
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4 ' (at ' display &12 + ! ' (at? ' display &14 + !
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5
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6
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7 : .sp ( n -- ) ." s" depth swap 1+ - 2 .r ;
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8 : .base base @ decimal dup 2 .r base ! ;
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9 : (.drv ( n -- ) Ascii A + emit ." : " ;
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10 : .dr ." " drv (.drv ;
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11 : .scr blk @ IF ." Blk" blk ELSE ." Scr" scr THEN
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12 @ 5 .r ;
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13 : .space ." Dic" s0 @ here $100 + - 6 u.r ;
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14
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15
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Screen 5 not modified
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0 \ statusline cas 10nov05
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1
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2 | : fstat ( n -- ) invers .base .sp
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3 .space .scr .dr file? 2 spaces order normal ;
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4
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5 : .stat output @ (at? display c/col 1- 0 (at
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6 3 fstat blankline (at output ! ;
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7
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8 : +stat ['] .stat Is .status .status ;
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9
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10 : -stat ['] noop Is .status ;
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11
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12
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13
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14
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15
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Screen 6 not modified
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0
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2
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6
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9
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10
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11
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14
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15
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Screen 7 not modified
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0
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1
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2
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3
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6
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10
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14
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15
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