VECTORLIST - The Mailing List For The Technical Discussion of Vector-Based Arcade Games

March_2000
RE: VECTOR: Potentially stupid Tempest question


From: Chris Loggans ( )
Date: Mon Mar 27 2000 - 14:11:08 CST


Peter,

    I believe the answer is yes. I use the monochrome output to run Tempest
boards on my bench test monitor (TEK 603 x-y display) and it works fine. I
have never tried it with a real B&W monitor, but I don't see why it
shouldn't work there too. However, unless you are sure that the output is
in the acceptable voltage range (ie not pinned to +/- 15v like a few boards
I've seen recently), I'd test it with your VOM or o'scope before connecting
it to the B&W monitor.

-Chris

-----Original Message-----
From: Peter Fyfe
To: Vector List
Sent: 3/27/00 2:52 AM
Subject: VECTOR: Potentially stupid Tempest question

Dear all,
 
I have a few Tempest boards that i'd like to test.  Not having any spare
colour xy monitors to use on my bench i'm wondering if i could hook it
up to a monochrome xy monitor. 
 
>From looking at the schematics a while back i noticed that there is an x
output, y output , the three colours and a monochrome output *which is
not used). 
 
Basically my question is ......can i use the monochrome output to drive
the Z input on my Asteroids monitor??
 
All suggestions welcome
 
thanks
 
Peter
 
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