Re: Need help with speech board pinout!

On May 19, 3:04pm, Gregg Woodcock wrote:
> Subject: Need help with speech board pinout!
> In message "Orders", you write:
>
> OK, now that I have a known working speech and sound board, I want to
> make 100% certain I put the speech board connector on properly when I
> put these into my Star Trek game. I didn't do it properly last time
> and I blew one of them (the speech, I think but I'm not certain). The
> prblem is that the connector has 6 pins but the speech board itself only
> has 4. Can anybody tell me which pin goes where? I have the pinout as
> follows but I just need to know which of the 4 pins on the board is
> which (for example, what number below is the outermost pin of the 4 on
> the speech board; the one closest to the edge of the PCB? Is it pin 1?)
>
> Speech Board
> ------------
> 1 - Audio in
> 2 - GND
> 3 - Volume
> 4 - NC
> 5 - NC
> 6 - NC

Hmm, I've never seen a Speech board with only 4 pins (I've seen 6, and 5 is
common, too). Are you sure you have a speech board? Should have a 6 pin
header, with a 8035 or 8039 chip, with 3 EPROMS (one 2715, two 2732).

Either way, with a speech board, the pinouts are as follows:

Speech Board
------------

 1 - Empty
 2 - Empty
 3 - Empty
 4 - Audio out
 5 - Shield
 6 - input from pin 1 of Battlestar Sound Board

This is assuming you have the boards vertical in the cage, with the parts side
to your right and solder side to your left, counting from the top down. Shield
is pretty easy to spot.

Usually the sound boards only have four pins. Are you sure you don't have a
sound board? FYI, pin 2 and 3 are for audio left and right, apparently for a
simulated stereo set up (does the StarTrek cockpit have simulated stereo?).

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Mark Jenison E-mail address: jenison@cig.mot.com
Cellular Infrastructure Group Motorola--Arlington Heights, IL
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Received on Mon May 19 12:28:38 1997