329 lines
9.5 KiB
Plaintext
329 lines
9.5 KiB
Plaintext
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CON 'Hive-Computer-Projekt
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{{
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Tutorial : "Build your OS"
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Name : VGA-Texttreiber
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Chip : Bellatrix-Code
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Version : 0
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Dateien :
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}}
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CON 'Konstanten
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_clkmode = xtal1 + pll16x
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_xinfreq = 5_000_000
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cols = 64
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rows = 48
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tiles = cols * rows
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spacetile = $8000 + $20 << 6
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vga_basport = 8 'vga startport
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keyb_dport = 17 'tastatur datenport
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keyb_cport = 16 'tastatur taktport
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CURSORCHAR = $0E 'cursorzeichen
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TAB1 = 16
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TAB2 = 32
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TAB3 = 48
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OBJ 'Verwendete Objekte
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vga : "bel-vga"
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key : "bel-keyb"
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gfx1 : "bel-gfx1"
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VAR 'Variablen
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long cur,col, row, color
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long array[tiles/2]
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byte cursor 'cursorzeichen
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byte curstat 'cursorstatus 1 = ein
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byte sline 'startzeile des scrollfensters
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byte eline 'endzeile des scrollfensters
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long stack1[48]
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long stack2[48]
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long stack3[48]
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long stack4[48]
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CON
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srow = 3
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erow = 45
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rndfac = $efffffff/256
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PUB main | i 'Hauptroutine
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init_subsysteme
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gfx1.start 'tv-scroller starten
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print_char($115)
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cognew(mstring(0), @stack1)
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cognew(mstring(0), @stack2)
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cognew(mstring(0), @stack3)
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cognew(mstring(0), @stack4)
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mstring(0)
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PUB mstring(cid) | i,len,x,ecnt,acc
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i := cnt
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repeat
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acc := ?i & $6f
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len := ?i & $2f
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x := ?i & $3f
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ecnt:= ?i & $3ef + 10
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if acc == $2f
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flow(len,x,ecnt,cid+3)
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else
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flow(len,x,ecnt,cid)
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if key.key == key#Esc
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reboot
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PUB flow(len,x,ecnt,cid) | y,char,rnd,ccnt,mrow,mcol,mcolor
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mcol := x
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mrow := srow
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repeat len
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repeat ccnt from 0 to ecnt
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mcolor := 1 + cid
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mchar(?char & $FF,mrow,mcol,mcolor)
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mcolor := 0 + cid
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mchar(?char & $FF,mrow,mcol,mcolor)
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if mrow++ => erow
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mrow := srow
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PUB unflow(len,x,ecnt,cid) | y,char,rnd,ccnt,mrow,mcol,mcolor
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mcol := x
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mrow := srow
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repeat len
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repeat ccnt from 0 to ecnt
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mcolor := 1 + cid
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mchar(?char & $FF,mrow,mcol,4)'mcolor)
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mchar(" ",mrow,mcol,mcolor)
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if mrow++ => erow
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mrow := srow
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PRI mchar(c,mrow,mcol,mcolor) | i,k
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'schreibt zeichen an aktuelle position ohne cursorposition zu verändern
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k := mcolor << 1 + c & 1
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i := $8000 + (c & $FE) << 6 + k
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array.word[mrow * cols + mcol] := i 'oberes tile setzen
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array.word[(mrow + 1) * cols + mcol] := i | $40 'unteres tile setzen
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PUB init_subsysteme
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{{initialisierung des belatrix-chips}}
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color := 1
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key.start(keyb_dport, keyb_cport) 'tastaturport starten
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vga.start(vga_basport, @array, @vgacolors, 0, 0, 0) 'vga-treiber starten
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print_char($100)
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print_string(@ver1)
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print_char($0D)
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cursor := CURSORCHAR 'cursorzeichen setzen
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curstat := 1 'cursor anschalten
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sline := 2
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eline := rows
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PRI print_string(ptr) 'Stringausgabe
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repeat while byte[ptr] 'wiederhole bis $0
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print_char(byte[ptr++]) 'ausgabe des zeichens
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PUB printdec(value) | i
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if value < 0 'negativer zahlenwert
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-value
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print_char("-")
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i := 1_000_000_000
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repeat 10 'zahl zerlegen
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if value => i
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print_char(value / i + "0")
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value //= i
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result~~
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elseif result or i == 1
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print_char("0")
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i /= 10 'nächste stelle
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PUB printhex(value, digits)
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value <<= (8 - digits) << 2
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repeat digits
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print_char(lookupz((value <-= 4) & $F : "0".."9", "A".."F"))
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PUB print_char(c) | code,n
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{{zeichen auf bildschirm ausgeben}}
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'' Print a character
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''
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'' $0D = new line
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'' $20..$FF = character
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'' $100 = clear screen
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'' $101 = home
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'' $108 = backspace
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''$110..$11F = select color
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case c
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$0A: 'LF ausblenden
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return
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$00..$0C:
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pchar(c)
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if curstat == 1
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schar(cursor)
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$0D: 'return?
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if curstat == 1
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schar($20)
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newline
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if curstat == 1
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schar(cursor)
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$0E..$FF: 'character?
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pchar(c)
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if curstat == 1
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schar(cursor)
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$100: 'clear screen?
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if curstat == 1
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schar($20)
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n := sline * cols * 2
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wordfill(@array + n, spacetile, tiles - n)
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row := sline
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col := 0
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if curstat == 1
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schar(cursor)
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$101: 'home?
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row := sline
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col := 0
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$102: 'backspace?
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if col
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if curstat == 1
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schar($20)
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col--
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if curstat == 1
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schar(cursor)
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$103: 'tab
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if col < TAB1
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if curstat == 1
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schar($20)
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col := TAB1
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if curstat == 1
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schar(cursor)
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return
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if col < TAB2
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if curstat == 1
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schar($20)
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col := TAB2
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if curstat == 1
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schar(cursor)
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return
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if col < TAB3
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if curstat == 1
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schar($20)
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col := TAB3
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if curstat == 1
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schar(cursor)
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return
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$105: 'pos1
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if curstat == 1
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schar($20)
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col := 0
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if curstat == 1
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schar(cursor)
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$113: 'screeninit
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wordfill(@array, spacetile, tiles)
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row := 0
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col := 0
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sline := 0
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$114: 'curon
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curstat := 1
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schar(cursor)
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$115: 'curoff
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if curstat == 1
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schar($20)
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curstat := 0
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$130..$13F: 'select color?
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color := c & $F
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PRI schar(c)| i,k
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'schreibt zeichen an aktuelle position ohne cursorposition zu verändern
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k := color << 1 + c & 1
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i := $8000 + (c & $FE) << 6 + k
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array.word[row * cols + col] := i 'oberes tile setzen
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array.word[(row + 1) * cols + col] := i | $40 'unteres tile setzen
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PRI pchar(c)
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'schreibt zeichen an aktuelle position zählt position weiter
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schar(c)
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if ++col == cols
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newline
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PUB newline | i
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col := 0
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if (row += 2) == rows
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row -= 2
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'scroll lines
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repeat i from sline to rows-3
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wordmove(@array.word[i*cols], @array.word[(i+2)*cols], cols) 'wordmove(dest,src,cnt)
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'clear new line
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wordfill(@array.word[(rows-2)*cols], spacetile, cols<<1)
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DAT 'Daten
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'============================================================
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' v h v h ' v=Vordergrund, h=Hintergrund
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' long $ 3C 04 3C 04 'Muster
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' v v h h
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' long $ 3C 3C 04 04 'Muster
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'
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'0 %%RGBx_RGBx_RGBx_RGBx
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' long %%0220_0010_0220_0010
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' long %%0220_0220_0010_0010
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'============================================================
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vgacolors long 'farbtabelle
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'0 %%RGBx_RGBx_RGBx_RGBx 'dunkles grün auf schwarz
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long %%0100_0000_0100_0000
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long %%0100_0100_0000_0000
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'1 %%RGBx_RGBx_RGBx_RGBx 'helles grün auf schwarz
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long %%0200_0000_0200_0000
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long %%0200_0200_0000_0000
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'2 %%RGBx_RGBx_RGBx_RGBx 'dunkles rot auf schwarz
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long %%1000_0000_1000_0000
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long %%1000_1000_0000_0000
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'3 %%RGBx_RGBx_RGBx_RGBx 'helles rot auf schwarz
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long %%2000_0000_2000_0000
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long %%2000_2000_0000_0000
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'4 %%RGBx_RGBx_RGBx_RGBx 'dunkles rot auf schwarz
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long %%0010_0000_0010_0000
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long %%0010_0010_0000_0000
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'5 %%RGBx_RGBx_RGBx_RGBx 'helles rot auf schwarz
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long %%0020_0000_0020_0000
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long %%0020_0020_0000_0000
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long $0C000C00 'blue
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long $0C0C0000
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long $FC00FC00 'white
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long $FCFC0000
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long $FF80FF80 'red/white
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long $FFFF8080
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long $FF20FF20 'green/white
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long $FFFF2020
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long $FF28FF28 'cyan/white
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long $FFFF2828
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long $C0408080 'redbox
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long $3010F020 'greenbox
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long $3C142828 'cyanbox
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long $FC54A8A8 'greybox
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long $3C14FF28 'cyanbox+underscore
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long $F030C050 'graphics colors
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ver1 byte "▶Hive - UniMatrix",0
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prompt1 byte "ok",$0D, 0
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