mirror of
https://github.com/forth-ev/VolksForth.git
synced 2024-07-09 14:29:01 +00:00
307 lines
20 KiB
Plaintext
307 lines
20 KiB
Plaintext
Screen 0 not modified
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1 This display interface uses BIOS call $10 functions for a fast
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2 display interface. A couple of state variables is contained
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3 in a vector that is task specific such that different tasks
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4 may use different windows. For simplicity windows always
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5 span the whole width of the screen. They can be defined by
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6 top and bottom line. This mechanism is used for a convenient
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7 status display line on the bottom of the screen.
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8
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Screen 1 not modified
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0 \ Multitsking display interface loadscreen ks cas 10nov05
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1 Onlyforth \needs Assembler 2 loadfrom asm.scr
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2
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3 User area area off \ points at active window
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4 Variable status \ to switch status on/off
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5 | Variable cursor \ points at area with active cursor
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6
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7 1 8 +thru .( Multitasking display driver loaded ) cr
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Screen 2 not modified
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0 \ Multitsking display interface ks 6 sep 86
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1
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2 : Area: Create 0 , 0 , 7 c, Does> area ! ;
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3 \ | col | row | top | bot | att |
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4
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5 Area: terminal terminal area @ cursor !
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6
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7 : (area Create dup c, 1+ Does> c@ area @ + ;
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8
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9 0 | (area ccol | (area crow | (area ctop
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10 | (area cbot (area catt drop
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11
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12 : window ( topline botline -- ) cbot c! ctop c! ;
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13
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14 : full 0 c/col 2- window ; full
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15
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Screen 3 not modified
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0 \ Multitask (type (emit ks 20 dez 87
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1
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2 Code (type ( addr len -- ) W pop I push R push
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3 u' area U D) I mov U push D U mov
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4 $F # A+ mov $10 int u' catt I D) R- mov
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5 3 # A+ mov $10 int C push D push $E0E # C mov
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6 1 # A+ mov $10 int I ) D mov 1 # C mov
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7 U inc [[ U dec 0= not ?[[ 2 # A+ mov $10 int
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8 D- inc ' c/row >body #) D- cmp 0= not
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9 ?[[ W ) A- mov W inc 9 # A+ mov $10 int ]]? ]?
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10 D I ) mov D pop cursor #) I cmp 0= ?[ I ) D mov ]?
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11 2 # A+ mov $10 int C pop 1 # A+ mov $10 int U pop
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12 R pop I pop D pop ' pause #) jmp end-code
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13
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14 : (emit ( char -- ) sp@ 1 (type drop ;
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15
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Screen 4 not modified
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0 \ Multitask (at (at? ks 04 aug 87
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1 Code (at ( row col -- ) A pop A- D+ mov
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2 u' area U D) W mov D W ) mov cursor #) W cmp 0=
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3 ?[ R push U push $F # A+ mov $10 int
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4 2 # A+ mov $10 int U pop R pop
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5 ]? D pop Next end-code
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6
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7 Code (at? ( -- row col )
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8 D push u' area U D) W mov W ) D mov
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9 D+ A- mov 0 # A+ mov A+ D+ mov A push Next
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10 end-code
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11
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12 Code curat? ( -- row col ) D push R push
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13 $F # A+ mov $10 int 3 # A+ mov $10 int
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14 R pop 0 # A mov D+ A- xchg A push Next
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15 end-code
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Screen 5 not modified
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0 \ cur! curshape setpage ks 28 jun 87
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1
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2 : cur! \ set cursor into current task's window
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3 area @ cursor ! (at? (at ; cur!
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4
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5 Code curshape ( top bot -- ) D C mov D pop
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6 D- C+ mov 1 # A+ mov $10 int D pop Next
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7 end-code
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8
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9 Code setpage ( n -- )
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10 $503 # A mov D- A- and $10 int D pop Next
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11 end-code
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Screen 6 not modified
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0 \ Multitask normal invers blankline ks 01 nov 88
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1 : normal 7 catt c! ; : invers $70 catt c! ;
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2 : underline 1 catt c! ; : bright $F catt c! ;
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3
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4 Code blankline D push R push U push $F # A+ mov
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5 $10 int u' area U D) W mov u' catt W D) R- mov
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6 3 # A+ mov $10 int C push D push
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7 $E0E # C mov 1 # A+ mov $10 int W ) D mov
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8 2 # A+ mov $10 int ' c/row >body #) C mov
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9 D- C- sub bl # A- mov 9 # A+ mov
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10 C- C- or 0= not ?[ $10 int ]?
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11 D pop 2 # A+ mov $10 int \ set cursor back
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12 C pop 1 # A+ mov $10 int \ cursor visible again
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13 U pop R pop D pop ' pause #) jmp end-code
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14
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15 | : lineerase ( line# -- ) 0 (at blankline ;
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Screen 7 not modified
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0 \ Multitask (del scroll (cr (page ks 04 okt 87
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1
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2 : (del (at? ?dup
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3 IF 1- 2dup (at bl (emit (at exit THEN drop ;
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4
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5 Code scroll D push R push U push
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6 u' area U D) W mov u' catt W D) R+ mov
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7 u' ctop W D) D mov D- C+ mov 0 # C- mov
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8 ' c/row >body #) D- mov D- dec $601 # A mov
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9 $10 int U pop R pop D pop Next
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10 end-code
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11
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12 : (cr (at? drop 1+ dup cbot c@ u>
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13 IF scroll drop cbot c@ THEN lineerase ;
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14
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15 : (page ctop c@ cbot c@ DO I lineerase -1 +LOOP ;
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Screen 8 not modified
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0 \ Multitask status display ks 10 okt 87
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1
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2 ' (emit ' display 2 + ! ' (cr ' display 4 + !
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3 ' (type ' display 6 + ! ' (del ' display 8 + !
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4 ' (page ' display &10 + !
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5 ' (at ' display &12 + ! ' (at? ' display &14 + !
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6
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7 : .base base @ decimal dup 2 .r base ! ;
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8 : .sp ( n -- ) ." s" depth swap 1+ - 2 .r ;
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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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Screen 9 not modified
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0 \ statuszeile ks ks 04 aug 87
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1
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2 | : fstat ( n -- ) .base .sp
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3 .space .scr .dr file? 2 spaces order ;
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4
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5 | Area: statusline
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6 statusline c/col 1- dup window page invers terminal
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7
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8 : (.status output @ display area @ statusline
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9 status @ IF (at? drop 0 (at 2 fstat blankline
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10 ELSE normal page invers
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11 THEN area ! output ! ;
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12 ' (.status Is .status
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13
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14 : bye status off .status bye ;
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Screen 10 not modified
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Screen 11 not modified
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Screen 12 not modified
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Screen 13 not modified
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