mirror of
https://github.com/forth-ev/VolksForth.git
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307 lines
19 KiB
Forth
307 lines
19 KiB
Forth
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\ *** Block No. 0 Hexblock 0
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This display interface uses BIOS call $10 functions for a fast
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display interface. A couple of state variables is contained
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in a vector that is task specific such that different tasks
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may use different windows. For simplicity windows always
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span the whole width of the screen. They can be defined by
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top and bottom line. This mechanism is used for a convenient
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status display line on the bottom of the screen.
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\ *** Block No. 1 Hexblock 1
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\ Multitsking display interface loadscreen ks cas 10nov05
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Onlyforth \needs Assembler 2 loadfrom asm.scr
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User area area off \ points at active window
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Variable status \ to switch status on/off
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| Variable cursor \ points at area with active cursor
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1 8 +thru .( Multitasking display driver loaded ) cr
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\ *** Block No. 2 Hexblock 2
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\ Multitsking display interface ks 6 sep 86
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: Area: Create 0 , 0 , 7 c, Does> area ! ;
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\ | col | row | top | bot | att |
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Area: terminal terminal area @ cursor !
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: (area Create dup c, 1+ Does> c@ area @ + ;
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0 | (area ccol | (area crow | (area ctop
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| (area cbot (area catt drop
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: window ( topline botline -- ) cbot c! ctop c! ;
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: full 0 c/col 2- window ; full
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\ *** Block No. 3 Hexblock 3
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\ Multitask (type (emit ks 20 dez 87
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Code (type ( addr len -- ) W pop I push R push
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u' area U D) I mov U push D U mov
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$F # A+ mov $10 int u' catt I D) R- mov
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3 # A+ mov $10 int C push D push $E0E # C mov
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1 # A+ mov $10 int I ) D mov 1 # C mov
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U inc [[ U dec 0= not ?[[ 2 # A+ mov $10 int
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D- inc ' c/row >body #) D- cmp 0= not
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?[[ W ) A- mov W inc 9 # A+ mov $10 int ]]? ]?
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D I ) mov D pop cursor #) I cmp 0= ?[ I ) D mov ]?
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2 # A+ mov $10 int C pop 1 # A+ mov $10 int U pop
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R pop I pop D pop ' pause #) jmp end-code
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: (emit ( char -- ) sp@ 1 (type drop ;
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\ *** Block No. 4 Hexblock 4
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\ Multitask (at (at? ks 04 aug 87
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Code (at ( row col -- ) A pop A- D+ mov
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u' area U D) W mov D W ) mov cursor #) W cmp 0=
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?[ R push U push $F # A+ mov $10 int
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2 # A+ mov $10 int U pop R pop
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]? D pop Next end-code
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Code (at? ( -- row col )
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D push u' area U D) W mov W ) D mov
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D+ A- mov 0 # A+ mov A+ D+ mov A push Next
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end-code
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Code curat? ( -- row col ) D push R push
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$F # A+ mov $10 int 3 # A+ mov $10 int
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R pop 0 # A mov D+ A- xchg A push Next
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end-code
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\ *** Block No. 5 Hexblock 5
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\ cur! curshape setpage ks 28 jun 87
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: cur! \ set cursor into current task's window
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area @ cursor ! (at? (at ; cur!
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Code curshape ( top bot -- ) D C mov D pop
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D- C+ mov 1 # A+ mov $10 int D pop Next
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end-code
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Code setpage ( n -- )
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$503 # A mov D- A- and $10 int D pop Next
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end-code
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\ *** Block No. 6 Hexblock 6
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\ Multitask normal invers blankline ks 01 nov 88
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: normal 7 catt c! ; : invers $70 catt c! ;
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: underline 1 catt c! ; : bright $F catt c! ;
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Code blankline D push R push U push $F # A+ mov
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$10 int u' area U D) W mov u' catt W D) R- mov
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3 # A+ mov $10 int C push D push
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$E0E # C mov 1 # A+ mov $10 int W ) D mov
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2 # A+ mov $10 int ' c/row >body #) C mov
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D- C- sub bl # A- mov 9 # A+ mov
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C- C- or 0= not ?[ $10 int ]?
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D pop 2 # A+ mov $10 int \ set cursor back
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C pop 1 # A+ mov $10 int \ cursor visible again
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U pop R pop D pop ' pause #) jmp end-code
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| : lineerase ( line# -- ) 0 (at blankline ;
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\ *** Block No. 7 Hexblock 7
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\ Multitask (del scroll (cr (page ks 04 okt 87
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: (del (at? ?dup
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IF 1- 2dup (at bl (emit (at exit THEN drop ;
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Code scroll D push R push U push
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u' area U D) W mov u' catt W D) R+ mov
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u' ctop W D) D mov D- C+ mov 0 # C- mov
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' c/row >body #) D- mov D- dec $601 # A mov
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$10 int U pop R pop D pop Next
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end-code
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: (cr (at? drop 1+ dup cbot c@ u>
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IF scroll drop cbot c@ THEN lineerase ;
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: (page ctop c@ cbot c@ DO I lineerase -1 +LOOP ;
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\ *** Block No. 8 Hexblock 8
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\ Multitask status display ks 10 okt 87
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' (emit ' display 2 + ! ' (cr ' display 4 + !
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' (type ' display 6 + ! ' (del ' display 8 + !
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' (page ' display &10 + !
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' (at ' display &12 + ! ' (at? ' display &14 + !
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: .base base @ decimal dup 2 .r base ! ;
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: .sp ( n -- ) ." s" depth swap 1+ - 2 .r ;
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: (.drv ( n -- ) Ascii A + emit ." : " ;
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: .dr ." " drv (.drv ;
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: .scr blk @ IF ." Blk" blk ELSE ." Scr" scr THEN
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@ 5 .r ;
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: .space ." Dic" s0 @ here $100 + - 6 u.r ;
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\ *** Block No. 9 Hexblock 9
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\ statuszeile ks ks 04 aug 87
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| : fstat ( n -- ) .base .sp
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.space .scr .dr file? 2 spaces order ;
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| Area: statusline
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statusline c/col 1- dup window page invers terminal
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: (.status output @ display area @ statusline
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status @ IF (at? drop 0 (at 2 fstat blankline
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ELSE normal page invers
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THEN area ! output ! ;
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' (.status Is .status
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: bye status off .status bye ;
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\ *** Block No. 10 Hexblock A
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\ *** Block No. 11 Hexblock B
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\ *** Block No. 12 Hexblock C
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\ *** Block No. 13 Hexblock D
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\ *** Block No. 14 Hexblock E
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\ *** Block No. 15 Hexblock F
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\ *** Block No. 16 Hexblock 10
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\ *** Block No. 17 Hexblock 11
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