1. Introduction.
2. Atari ST 13-Pin DIN Pinouts.
3. Scart Euro Connector Pinouts.
4. Standard VGA Pinouts.
5. Cable Colour Coding Chart.
6. References.
 

1. Introduction.
================
This is the manufacture of a cable set to correctly determine video pinouts for a number of older computers.
 

2. Atari ST 13-Pin DIN Pinouts.
===============================
The Atari ST uses a 13-pin circular DIN plug, Maplin stock code JW95D.
 
The following is viewed from the back of the connector, ie. solder connections;
 
            *   *   *   *          4   3   2   1
 
            *   *   *   *          8   7   6   5
 
            *   *   *   *         12  11  10   9
                         
                  *                     13
 
       1 = Audio Output           2 = Composite Video
       3 = General Purpose Output 4 = Monochrome Detect
       5 = Audio In               6 = Green
       7 = Red                    8 = Plus 12-Volt Pullup
       9 = Horizontal Sync       10 = Blue
      11 = Monochrome            12 = Vertical Sync
      13 = GND
 

3. Scart Euro Connector Pinouts.
================================
The following is viewed from the back of the connector, ie. solder connections;
 
          20  18  16  14  12  10   8   6   4   2               
 
     +--------------------------------------------+
      \                                           |
       \   *   *   *   *   *   *   *   *   *   *  |
        \             Male From Behind            |
        |  *   *   *   *   *   *   *   *   *   *  |
        |                                         |
        +-----------------------------------------+
 
          19  17  15  13  11   9   7   5   3   1
 
       1 = Audio Output Right     2 = Audio Input Right
       3 = Audio Output Left      4 = Audio GND
       5 = Blue GND               6 = Audio Input Left
       7 = Blue                   8 = Function Switching
       9 = Green GND             10 = Comm Data 2
      11 = Green                 12 = Comm Data 1
      13 = RED/Chroma GND        14 = Comm Data GND
      15 = RED/Chroma            16 = Blanking
      17 = VIDEO/Sync GND        18 = Blanking GND
      19 = VIDEO/Sync Ouput      20 = VIDEO/Sync Input
      21 = GND
 

4. Standard VGA Pinouts.
========================
The following is viewed from the back of the female connector, ie. solder connections;
 
        *    *    *    *    *            1    2    3    4    5
 
          *    *    *    *    *             6    7    8    9   10
 
        *    *    *    *    *            11   12   13   14   15
 
       1 = RED                    2 = GREEN
       3 = BLUE                   4 = ID2
       5 = GND                    6 = RED GND
       7 = GREEN GND              8 = BLUE GND
       9 = KEY/NC                10 = SYNC GND
      11 = ID0                   12 = ID1
      13 = Horizontal Sync       14 = Vertical Sync
      15 = ID3
 

5. Cable Colour Coding Chart.
=============================
Wire               ATARI               SCART               VGA               SPECTRUM
 
Red                 7 (RED)             15 (RED)            1 (RED)           7 (RED)
Green               6 (GREEN)           11 (GREEN)          2 (GREEN)         6 (GREEN)
Blue               10 (BLUE)             7 (BLUE)           3 (BLUE)          8 (BLUE)
Yellow              2 (COMPOSITE)       20 (VIDEO)           ------           1 (CVIDEO)
White              12 (VSYNC)              ------          14 (VSYNC)          ------
Grey                9 (HSYNC)           16 (BLANKING)      13 (HSYNC)         4 (CSYNC)       
Orange              8 (+12V)             8 (FUNCTION)        ------           3 (BRIGHT)
Purple              1 (AUDIO OUT)      2+6 (L+R)             ------           NA (AUDIO)
Shield             13 (GND)             17 (VIDEO GND)      5 (GND)           2 (GND)
Black              11 (MONO)            21 (GND)             ------            ------
Brown               3 (MONO DETECT)        ------            ------           5 (VSYNC)
 

6. Hammond 1551KGY Enclosure Dimensions.
========================================
The physical dimensions of this box are 81 x 40 x 20.  It can accomodate a stripboard of 30 x 14 holes.
 
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        +-------------------------------------------------------------+
 

7. Sinclair Spectrum 128K+ pinouts.
===================================
The Spectrum 128k+ uses an 8-pin circular DIN plug, Maplin stock code FJ91Y.
 
The following is viewed from the back of the male DIN connector, ie. solder connections;
 
              *       *             7       6
                  *                     8
             *         *           3         1
 
               *     *               5     4
                  *                     2
 
       1 = Composite Video        2 = 0V DC (GND)
       3 = Bright Output          4 = Composite Sync
       5 = Vertical Sync          6 = Green
       7 = Red                    8 = Blue