[Coco] makeshift converter

Sylvain Rousseau srousseau at comlab.com
Thu Feb 9 09:13:36 EST 2006

Thank you James,

Interesting, I will check it this weekend.


At 19:53 2006-02-08, you wrote:

>Not sure what the DB23 female end of the setup looks like, but I
>created a mac to VGA patch cord by taking a DB25 male off an old PC
>card, yanking the pins I didn't need and using it as a DB15 male.  If
>there is room on the machine for a little bit of overlap at the plug
>area, you could pull 2 pins out of a DB25 male and have a DB23 male
>with a slightly oversized jacket.
>   ___________________________
>  | o o o o o o o o o o o o x |
>  \  o o o o o o o o o o o x  /
>   \-------------------------/
>or thereabouts.
>On Feb 8, 2006, at 8:34 AM, Richard E. Crislip wrote:
>>Hello Sylvain
>>Well I can't help you. I used to have a DB23 to DB9 adaptor, but I
>>can not
>>locate it at the moment. Since I already have an Amiga version of
>>product, I really do not need it any more. So if I can locate it,
>>it will be
>>On 02/08/2006, Sylvain Rousseau wrote:
>>>Hello Roy,
>>>This is the pinout for the video connector of an Amiga
>>>500/600/1000/1200/2000/3000 and 4000.  I got it at
>>>and the connector is a ?/%$?# DB23, yes a DB23 male and I don't know
>>>where  I can find one.  I can hack my A2000 to add it an other
>>>connector to test  the RGB to VGA
>>>adapter and I'm willing to do it but I prefer to use a DB23 if I can
>>>find one.
>>>Pin     Name            Description
>>>1       /XCLK           Extern Clock
>>>2       /XCLKEN         Extern Clock Enable (47 Ohm)
>>>3       RED             Analog Red (75 Ohm)
>>>4       GREEN   Analog Green (75 Ohm)
>>>5       BLUE            Analog Blue (75 Ohm)
>>>6       DI              Digital Intensity (47 Ohm)
>>>7       DR              Digital Red (47 Ohm)
>>>8       DG              Digital Green (47 Ohm)
>>>9       DB              Digital Blue (47 Ohm)
>>>10      /CSYNC  Composite Sync (47 Ohm)
>>>11      /HSYNC  Horizontal Sync (47 Ohm)
>>>12      /VSYNC  Vertical Sync (47 Ohm)
>>>13      GNDRTN  Digital Ground (for /XCLKEN) Don"t connect with pin
>>>16-20. 14      /PIXELSW        Genlock overlay (47 Ohm)
>>>15      /C1             Clock out (47 Ohm)
>>>16      GND             Video Ground for RED Analog (useful to know
>>>because  some TVs need specific grounds for specific colors when
>>>SCART/PERITEL  SECAM video signal)
>>>17      GND             Video Ground for GREEN Analog
>>>18      GND             Video Ground for BLUE Analog
>>>19      GND             Video Ground for CHV SYNC
>>>20      GND             Video Ground
>>>21*     -12V            -12 Volts DC (10 mA max) (A500/A600/A1200)
>>>21*     -5V             -5 Volts DC (10 mA max)
>>>(A1000/A2000/A3000/A4000) 22      +12V            +12 Volts DC
>>>(100 mA
>>>max) 23      +5V             +5 Volts DC (100 mA max)
>>>At 14:25 2006-02-08, RJRTTY at aol.com wrote:
>>>>In a message dated 2/8/06 1:11:02 P.M. Eastern  Standard Time,
>>>>srousseau at comlab.com writes:
>>>>>Hello Roy,
>>>>>I  should be on the list to buy you a
>>>>>RGB to VGA adapter for my  Coco.
>>>>>Also, I have an Amiga 2000.  When I
>>>>>got the  adapter I am willing to try it
>>>>>with the Amiga and give you some
>>>>>feedback on the mailing list.
>>>>Thanks for the  offer.    You are on the
>>>>list at about 3 weeks down.
>>>>I  would need to know the type of connector
>>>>and pinout configuration the Amiga  uses.
>>>>Coco mailing list
>>>>Coco at maltedmedia.com
>>Cruising on AutoPilot                        |
>>         With an Amiga           ---o-o-O-o-o---  and a CoCo
>>Coco mailing list
>>Coco at maltedmedia.com
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