Difference between revisions of "Physical colour numbers"

Revision as of 00:06, 17 June 2016

Physical colour numbers are used as the short physical colour in the VDU 19 command, and used in the COLOUR and GCOL commands on platforms without a palette. The colour number is a bitmap of the colour to select. When implementing an operating system interface on other platforms this mapping should be adhered to.

   7   6   5   4   3   2   1   0
 +---+---+---+---+---+---+---+---+
 | L | B | E | F | I | B | G | R |
 +---+---+---+---+---+---+---+---+
   |   |   |   |   |   |   |   |
   |   |   |   |   |   |   |   +---Red
   |   |   |   |   |   |   +-------Green
   |   |   |   |   |   +-----------Blue
   |   |   |   |   +---------------Intense
   |   |   |   +-------------------Flash
   |   |   +-----------------------Extension
   |   +---------------------------Border
   +-------------------------------0=Foreground, 1=Background
 
 This gives:
  0 0 e f i b g r - &00+n - foreground colour
  0 1 e f i b g r - &40+n - extension
  1 0 e f i b g r - &80+n - background colour
  1 1 e f i b g r - &C0+n - border colour
 
 The BBC implements:
  l x x x f b g r - colour
          +-------- flash
 
 The ZX Spectrum implements:
  l b e f i b g r - colour
    | | | +-------- bright
    | | +---------- flash
    | +------------ change only flash/bright
    +-------------- border
 
 The Commodore implements:
  l b x f i b g r - colour
    |   | +-------- bright
    |   +---------- flash
    +-------------- border
 
 DOS/Windows implements:
  l x x f i b g r - colour
        | +-------- bright
        +---------- flash
 
 ANSI terminal implements:
  l b e f i b g r - colour
    | | | +-------- bright
    | | +---------- flash
    | +------------ underline
    +-------------- inverse

The BBC uses b3=flash, whereas all platforms other than the BBC uses b4=flash. For visual compatibility, programs could use 0-7 for non-flashing colours and 24-31 for flashing colours. On the BBC these will be flashing colours, on other platforms these will be bright flashing colours where supported.

Implementation details

Electron/BBC/Master/etc

  0+n  &00+n - foreground colour
128+n  &80+n - background colour
 
  Fore    Back                      Fore    Back
 ground  ground   Colour           ground  ground   Colour
  0 &00  128 &80  Black             8 &08  136 &88  Flashing Black
  1 &01  129 &81  Red               9 &09  137 &89  Flashing Red
  2 &02  130 &82  Green            10 &0A  138 &8A  Flashing Green
  3 &03  131 &83  Yellow           11 &0B  139 &8B  Flashing Yellow
  4 &04  132 &84  Blue             12 &0C  140 &8C  Flashing Blue
  5 &05  133 &85  Magenta          13 &0D  141 &8D  Flashing Magenta
  6 &06  134 &86  Cyan             14 &0E  142 &8E  Flashing Cyan
  7 &07  135 &87  White            15 &0F  143 &8F  Flashing White

ZX Spectrum

  0+n  &00+n  %000FIBGR - foreground colour, bright and flash
 32+n  &20+n  %001xxBGR - foreground colour, without changing flash and bright
 64+n  &40+n  %010xIxxx - bright without changing current colour
 96+n  &60+n  %011Fxxxx - flash without changing current colour
128+n  &80+n  %100FIBGR - background colour, bright and flash
160+n  &A0+n  %101xxBGR - background colour, without changing flash and bright
192+n  &C0+n  %11xxxBGR - border colour
 
  Fore    Back                               Fore    Back
 ground  ground   Border   Colour           ground  ground   Colour
  0 &00  128 &80  192 &C0  Black            16 &10  144 &90  Flashing Black
  1 &01  129 &81  193 &C1  Red              17 &11  145 &91  Flashing Red
  2 &02  130 &82  194 &C2  Green            18 &12  146 &92  Flashing Green
  3 &03  131 &83  195 &C3  Yellow           19 &13  147 &93  Flashing Yellow
  4 &04  132 &84  196 &C4  Blue             20 &14  148 &94  Flashing Blue
  5 &05  133 &85  197 &C5  Magenta          21 &15  149 &95  Flashing Magenta
  6 &06  134 &86  198 &C6  Cyan             22 &16  150 &96  Flashing Cyan
  7 &07  135 &87  199 &C7  White            23 &17  151 &97  Flashing White
  8 &08  136 &88           Bright Black     24 &18  152 &98  Flashing Bright Black
  9 &09  137 &89           Bright Red       25 &19  153 &99  Flashing Bright Red
 10 &0A  138 &8A           Bright Green     26 &1A  154 &9A  Flashing Bright Green
 11 &0B  139 &8B           Bright Yellow    27 &1B  155 &9B  Flashing Bright Yellow
 12 &0C  140 &8C           Bright Blue      28 &1C  156 &9C  Flashing Bright Blue
 13 &0D  141 &8D           Bright Magenta   29 &1D  157 &9D  Flashing Bright Magenta
 14 &0E  142 &8E           Bright Cyan      30 &1E  158 &9E  Flashing Bright Cyan
 15 &0F  143 &8F           Bright White     31 &1F  159 &9F  Flashing Bright White
 
 32 &20  160 &A0           Black, without changing flash/bright
 33 &21  161 &A1           Red, without changing flash/bright
 34 &22  162 &A2           Green, without changing flash/bright
 35 &23  163 &A3           Yellow, without changing flash/bright
 36 &24  164 &A4           Blue, without changing flash/bright
 37 &25  165 &A5           Magenta, without changing flash/bright
 38 &26  166 &A6           Cyan, without changing flash/bright
 39 &27  167 &A7           White, without changing flash/bright
 
 64 &40                    Bright off       96 &60           Flash off
 72 &48                    Bright on       112 &70           Flash on

Commodore

  0+n  &00+n - foreground colour
128+n  &80+n - background colour
192+n  &C0+n - border colour
 
  Fore    Back                               Fore    Back
 ground  ground   Border   Colour           ground  ground   Colour
  0 &00  128 &80  192 &C0  Black            16 &10  144 &90  Flashing Black
  1 &01  129 &81  193 &C1  Red              17 &11  145 &91  Flashing Red
  2 &02  130 &82  194 &C2  Green            18 &12  146 &92  Flashing Green
  3 &03  131 &83  195 &C3  Yellow           19 &13  147 &93  Flashing Yellow
  4 &04  132 &84  196 &C4  Blue             20 &14  148 &94  Flashing Blue
  5 &05  133 &85  197 &C5  Magenta          21 &15  149 &95  Flashing Magenta
  6 &06  134 &86  198 &C6  Cyan             22 &16  150 &96  Flashing Cyan
  7 &07  135 &87  199 &C7  White            23 &17  151 &97  Flashing White
  8 &08  136 &88  200 &C8  Orange           24 &18  152 &98  Flashing Orange
  9 &09  137 &89  201 &C9  Bright Red       25 &19  153 &99  Flashing Bright Red
 10 &0A  138 &8A  202 &CA  Bright Green     26 &1A  154 &9A  Flashing Bright Green
 11 &0B  139 &8B  203 &CB  Bright Grey      27 &1B  155 &9B  Flashing Bright Grey
 12 &0C  140 &8C  204 &CC  Bright Blue      28 &1C  156 &9C  Flashing Bright Blue
 13 &0D  141 &8D  205 &CD  Grey             29 &1D  157 &9D  Flashing Grey
 14 &0E  142 &8E  206 &CE  Dark Grey        30 &1E  158 &9E  Flashing Dark Grey
 15 &0F  143 &8F  207 &CF  Brown            31 &1F  159 &9F  Flashing Brown

DOS/Windows

  0+n  &00+n - foreground colour
128+n  &80+n - background colour
 
  Fore    Back                      Fore    Back
 ground  ground   Colour           ground  ground   Colour
  0 &00  128 &80  Black            16 &10  144 &90  Flashing Black
  1 &01  129 &81  Red              17 &11  145 &91  Flashing Red
  2 &02  130 &82  Green            18 &12  146 &92  Flashing Green
  3 &03  131 &83  Yellow           19 &13  147 &93  Flashing Yellow
  4 &04  132 &84  Blue             20 &14  148 &94  Flashing Blue
  5 &05  133 &85  Magenta          21 &15  149 &95  Flashing Magenta
  6 &06  134 &86  Cyan             22 &16  150 &96  Flashing Cyan
  7 &07  135 &87  White            23 &17  151 &97  Flashing White
  8 &08  136 &88  Bright Black     24 &18  152 &98  Flashing Bright Black
  9 &09  137 &89  Bright Red       25 &19  153 &99  Flashing Bright Red
 10 &0A  138 &8A  Bright Green     26 &1A  154 &9A  Flashing Bright Green
 11 &0B  139 &8B  Bright Yellow    27 &1B  155 &9B  Flashing Bright Yellow
 12 &0C  140 &8C  Bright Blue      28 &1C  156 &9C  Flashing Bright Blue
 13 &0D  141 &8D  Bright Magenta   29 &1D  157 &9D  Flashing Bright Magenta
 14 &0E  142 &8E  Bright Cyan      30 &1E  158 &9E  Flashing Bright Cyan
 15 &0F  143 &8F  Bright White     31 &1F  159 &9F  Flashing Bright White

ANSI Terminal

  0+n  &00+n - foreground colour
128+n  &80+n - background colour
 
  Fore    Back                      Fore    Back
 ground  ground   Colour           ground  ground   Colour
  0 &00  128 &80  Black            16 &10  144 &90  Flashing Black
  1 &01  129 &81  Red              17 &11  145 &91  Flashing Red
  2 &02  130 &82  Green            18 &12  146 &92  Flashing Green
  3 &03  131 &83  Yellow           19 &13  147 &93  Flashing Yellow
  4 &04  132 &84  Blue             20 &14  148 &94  Flashing Blue
  5 &05  133 &85  Magenta          21 &15  149 &95  Flashing Magenta
  6 &06  134 &86  Cyan             22 &16  150 &96  Flashing Cyan
  7 &07  135 &87  White            23 &17  151 &97  Flashing White
  8 &08  136 &88  Bright Black     24 &18  152 &98  Flashing Bright Black
  9 &09  137 &89  Bright Red       25 &19  153 &99  Flashing Bright Red
 10 &0A  138 &8A  Bright Green     26 &1A  154 &9A  Flashing Bright Green
 11 &0B  139 &8B  Bright Yellow    27 &1B  155 &9B  Flashing Bright Yellow
 12 &0C  140 &8C  Bright Blue      28 &1C  156 &9C  Flashing Bright Blue
 13 &0D  141 &8D  Bright Magenta   29 &1D  157 &9D  Flashing Bright Magenta
 14 &0E  142 &8E  Bright Cyan      30 &1E  158 &9E  Flashing Bright Cyan
 15 &0F  143 &8F  Bright White     31 &1F  159 &9F  Flashing Bright White
 
 32+n  &20+n      Underlined text
 64+n  &40+n      Inverse text

Jgharston (talk) 23:06, 16 June 2016 (UTC)

@@ Line 59: / Line 59: @@
 b4=flash. For visual compatibility, programs could use 0-7 for non-flashing
 colours and 24-31 for flashing colours. On the BBC these will be flashing
-colours, on other platforms these will be bright flashing colours.
+colours, on other platforms these will be bright flashing colours where
+supported.
 ==Implementation details==
@@ Line 115: / Line 116: @@
 &27  167 &A7           White, without changing flash/bright
-&40                    Bright off       96 &60                    Flash off
+&40                    Bright off       96 &60           Flash off
-&48                    Bright on       112 &70                    Flash on
+&48                    Bright on       112 &70           Flash on
 ===Commodore===
@@ Line 191: / Line 192: @@
 +n  &40+n      Inverse text
-<!--
+[[User:Jgharston|Jgharston]] ([[User talk:Jgharston|talk]]) 23:06, 16 June 2016 (UTC)
- DOS:
- COLOUR 0
- COLOUR 128
- Black
- COLOUR 1
- COLOUR 129
- Red
- COLOUR 2
- COLOUR 130
- Green
- COLOUR 3
- COLOUR 131
- Yellow
- COLOUR 4
- COLOUR 132
- Blue
- COLOUR 5
- COLOUR 133
- Magenta
- COLOUR 6
- COLOUR 134
- Cyan
- COLOUR 7
- COLOUR 135
- White
- COLOUR 8
- COLOUR 136
- Intensified Black
- COLOUR 9
- COLOUR 137
- Intensified Red
- COLOUR 10
- COLOUR 138
- Intensified Green
- COLOUR 11
- COLOUR 139
- Intensified Yellow
- COLOUR 12
- COLOUR 140
- Intensified Blue
- COLOUR 13
- COLOUR 141
- Intensified Magenta
- COLOUR 14
- COLOUR 142
- Intensified Cyan
- COLOUR 15
- COLOUR 143
- Intensified White
- The border is specified by using -1 as the logical colour number.
- The following example sets the border colour to green.
-     VDU 19,-1,2,0,0,0
- The alternative mode provides an 'analogue' palette by allowing you to set
- the Red, Green and Blue intensities to any value between 0 and 63. The
- format of the VGA 'analogue' colour palette command is shown below.
-     VDU 19,logical,-1,red,green,blue
- If bit 7 of the logical colour number is set (values 128 to 143), then the
- enhanced palette is used and the physical colour is taken to be the IBM
- colour value.
- For example, the following command will set logical colour 1 to green.
-     VDU 19,129,2,0,0,0
- The text enhanced palette is the same as the graphics enhanced palette.
--bit RGB colours
- In the 6-bit RGB mode you set the physical colour by specifying the values
- of the individual red, green and blue components as numbers in the range 0
- (minimum) to 63 (maximum). Hence the value 0,0,0 corresponds to black and
- the value 63,63,63 corresponds to peak (intensified) white.
- To select a logical colour to one of these physical colours you must use the
- VDU 19 command:
-     VDU 19,logical,-1,red,green,blue
- This mode is provided for compatibility with BBC BASIC (86).
--bit RGB colours
- In the 8-bit RGB mode you set the physical colour by specifying the values
- of the individual red, green and blue components as numbers in the range 0
- (minimum) to 255 (maximum). Hence the value 0,0,0 corresponds to black and
- the value 255,255,255 corresponds to peak (intensified) white.
- To select a logical colour to one of these physical colours you use either
- the VDU 19 command or the COLOUR statement:
-     VDU 19,logical,16,Red,Green,Blue
-     COLOUR logical,Red,Green,Blue
-1 x x x b g r -
-0 x x x b g r - background colour
-1 x x x b g r - border colour
- -->
-[[User:Jgharston|Jgharston]] ([[User talk:Jgharston|talk]]) 20:33, 13 June 2016 (UTC)

Difference between revisions of "Physical colour numbers"

Revision as of 00:06, 17 June 2016

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Colour bitmap

Implementation details

Electron/BBC/Master/etc

ZX Spectrum

Commodore

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