311 lines
9.1 KiB
Plaintext
311 lines
9.1 KiB
Plaintext
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{{ VGA-Spezifika für belflash
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}}
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CON
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COLS = 64
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ROWS = 48
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TLINES_PER_ROW = 2
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DEFAULT_Y0 = TLINES_PER_ROW ' 1 Zeile Platz lassen für HIVE-Logo
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COLORANZ = 8
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SPACETILE = $8000 + $20 << 6
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VGA_BASPORT = 8 'vga startport
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OBJ
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vga : "bel-vga"
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VAR
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long vid_arr ' Kopie des Pointers auf den "Bildwiederholspeicher"
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long ccolor ' aktuelle Anzeigefarbe
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PUB start(array)
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vid_arr := array
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vga.start(VGA_BASPORT, array, @vgacolors, 0, 0, 0) 'vga-treiber starten
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PUB set_dscr(scr_ptr)
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vga.set_scrpointer(scr_ptr) 'screenpointer für den displaytreiber neu setzen
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PUB get_color(cnr)
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return long[@vgacolors][cnr]
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PUB set_color(cnr, colr)
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long[@vgacolors][cnr] := colr
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PUB set_ccolor(colr)
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ccolor := colr
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PUB get_ccolor
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return ccolor
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PUB schar(offset, c) | i
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i := $8000 + (c & $FE) << 6 + (ccolor << 1 + c & 1)
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word[vid_arr][offset] := i 'oberes tile setzen
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word[vid_arr][offset + cols] := i | $40 'unteres tile setzen
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DAT
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{{
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'' array_ptr = Pointer to 3,072 long-aligned words, organized as 64 across by 48 down,
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'' which will serve as the tile array. Each word specifies a tile bitmap and
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'' a color palette for its tile area. The top 10 bits of each word form the
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'' base address of a 16-long tile bitmap, while the lower 6 bits select a
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'' color palette for the bitmap. For example, $B2E5 would specify the tile
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'' bitmap spanning $B2C0..$B2FF and color palette $25.
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'' color_ptr = Pointer to 64 longs which will define the 64 color palettes. The RGB data
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'' in each long is arranged as %%RGBx_RGBx_RGBx_RGBx with the sub-bytes 3..0
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'' providing the color data for pixel values %11..%00, respectively:
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''
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'' %%3330_0110_0020_3300: %11=white, %10=dark cyan, %01=blue, %00=gold
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''
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%% ist quaternary-darstellung; jedes digit von 0 bis 3, also 4-wertigkeit
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bildaufbau: 24 zeilen zu je 64 zeichen; jedes zeichen wird durch zwei tiles gebildet
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die ?bereinander liegen.
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jedes tile belegt ein word: 10 bit bitmap und 6 bit color. zwei tiles ein long.
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'0 %%RGBx_RGBx_RGBx_RGBx
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long %%0330_0010_0330_0010
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long %%0330_0330_0010_0010
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long $3C043C04 'grau/blau erste - hive-version
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long $3C3C0404
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Color-Calculator:
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http://www.rayslogic.com/propeller/Programming/Colors.htm
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For the 1024x768 VGA tile driver:
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2 longs are required for each text foreground/background color combo, arranged as:
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$ff_bb_ff_bb
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$ff_ff_bb_bb
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where 'ff' is the foreground color and 'bb' is the background color
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2 longs needed because characters are in an interleaved pair
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The first long is the color for the first character in a pair, the second long is for the second character in a pair.
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Demo routine "print()" only allows for 8 fore/back combinations (using longs 0 to 15)
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1 long required for box colors, arranged as:
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$tl_br_fi_bb
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where 'tl' is top-left edge, 'br' is bottom-right edge, 'fi' is focus indicators, and 'bb' is background color
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The demo "box()" procedure hardwired to add 16 to input color number to pick box color and adds 5 to input
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color number to pick text color for box...
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So, "box(left,top,clr,str)" uses color number 16+clr for box colors and 5+clr for text color. You probably want
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the 'bb' background colors of these two to match! Note that this limits you to 4 box colors.
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1 long used for graphics colors, arranged as
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$00_11_22_33
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where 00,11,22,33 are the selectable graphics colors 0,1,2,3
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Demo hardwired to use the 21st long (last one) for the graphics colors
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The Propeller's "tile driver" video uses 32-bit (long) values to define a four color palette
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The "color_ptr" parameter, given to the tile driver, specifies the location of the data block of up to 64 different
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long palette values
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Each long palette represents 4 different colors, one byte each. Each color byte uses 2 bits for each primary colors,
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RGB, arranged as RGBx. The "x" represents the two least significant bits, which are ignored.
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Parallax gives this example of a 32-bit long palette, represented as a 16-digit quaternary (2-bit) number:
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%%3330_0110_0020_3300 or $FC1408F0
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The first byte, %%3330 (binary %11111100), is the color white
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The second byte, %%0110, is the color dark cyan
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}}
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vgacolors long 'farbpalette
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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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'0 %%RGBx_RGBx_RGBx_RGBx
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' long %%0330_0010_0330_0010
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' long %%0330_0330_0010_0010
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'============================================================
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'set 1 - grau auf weiß
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{
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long $54FC54FC 'grau/weiß
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long $5454FCFC
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long $58FC58FC 'hellblau/weiß
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long $5858FCFC
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long $64FC64FC 'hellgrün/weiß
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long $6464FCFC
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long $94FC94FC 'hellrot/weiß
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long $9494FCFC
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long $00FC00FC 'schwarz/weiß
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long $0000FCFC
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long $0CFC0CFC 'blau/weiß
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long $0C0CFCFC
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long $30FC30FC 'grün/weiß
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long $3030FCFC
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long $C0FCC0FC 'rot/weiß
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long $C0C0FCFC
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long $C0408080 'redbox
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long $CC440088 'magentabox
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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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long $881430FC
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long $8008FCA4
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}
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'set 2 - weiß auf schwarz
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{
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long $FC00FC00 'schwarz/weiß
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long $FCFC0000
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long $A800A800 'schwarz/hellgrau
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long $A8A80000
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long $54005400 'schwarz/dunkelgrau
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long $54540000
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long $30043004 'grün/blau
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long $30300404
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long $043C043C 'Color 0 reverse
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long $04043C3C
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long $FC04FC04 'weiss/blau
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long $FCFC0404
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long $FF80FF80 'red/white
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long $FFFF8080
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long $88048804 'magenta/blau
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long $88880404
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long $C0408080 'redbox
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long $CC440088 'magentabox
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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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long $881430FC
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long $8008FCA4
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}
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'set 3 - hellblau auf dunkelblau
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{
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long $3C043C04 'grau/blau erste - hive-version
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long $3C3C0404
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long $F004F004 'yellow/blue
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long $F0F00404
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long $C004C004 'rot/blau
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long $C0C00404
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long $30043004 'grün/blau
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long $30300404
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long $043C043C 'Color 0 reverse
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long $04043C3C
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long $FC04FC04 'weiss/blau
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long $FCFC0404
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long $FF80FF80 'red/white
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long $FFFF8080
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long $88048804 'magenta/blau
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long $88880404
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long $C0408080 'redbox
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long $CC440088 'magentabox
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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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long $881430FC
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long $8008FCA4
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}
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'set 4 - chess
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{
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'0..1: text color 0:
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long $F010F010 '0: Yellow on Green
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long $F0F01010
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'2..3: text color 1:
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long $C0FCC0FC '1: red on white
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long $C0C0FCFC
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'4..5: text color 2:
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long $00FC00FC '2: black on white
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long $0000FCFC
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'6..7: text color 3:
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long $F010F010 '3: Yellow on Green
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long $F0F01010
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long $043C043C 'Color 0 reverse
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long $04043C3C
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long $FC04FC04 'weiss/blau
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long $FCFC0404
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long $FF80FF80 'red/white
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long $FFFF8080
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long $88048804 'magenta/blau
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long $88880404
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long $C0408080 'redbox
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long $CC440088 'magentabox
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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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long $881430FC
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long $8008FCA4
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}
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'set 5 - grün auf schwarz
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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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long $30003000 'color 0: grün auf schwarz
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long $30300000
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long $C000C000 'color 1: rot auf schwarz
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long $C0C00000
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long $0C000C00 'color 2: blau auf schwarz
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long $0C0C0000
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long $E000E000 'color 3: gelb auf schwarz
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long $E0E00000
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long $D000D000 'color 4: orange auf schwarz
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long $D0D00000
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long $3C003C00 'color 5: cyan auf schwarz
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long $3C3C0000
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long $FC00FC00 'color 6: weiß auf schwarz
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long $FCFC0000
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long $C800C800 'color 7: magenta auf schwarz
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long $C8C80000
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long $00300030 'color 8: schwarz auf grün
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long $00003030
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long $00C000C0 'color 9: schwarz auf rot
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long $0000C0C0
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long $000C000C 'color 10: schwarz auf blau
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long $00000C0C
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long $00E000E0 'color 11: schwarz auf gelb
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long $0000E0E0
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long $00D000D0 'color 12: schwarz auf orange
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long $0000D0D0
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long $003C003C 'color 13: schwarz aufcyan
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long $00003C3C
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long $00FC00FC 'color 14: schwarz auf weiß
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long $0000FCFC
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long $00C800C8 'color 15: schwarz auf magenta
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long $0000C8C8
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