Re: mathbox

From: Mark Shostak <xx.vl_at_cinelabs.com>
Date: Fri Dec 10 2004 - 06:38:57 EST

On Fri, Dec 10, 2004 at 01:24:35AM -0500, dorian wrote:
> so in other words, even if the math box isn't working i should get a test
> screen?

Correct.

btw, which game did you say this was?
What are the symptoms again? (any sound in selftest?)
Are the supply voltages correct?

-Mark

>
> my problem is the address decoder isn't changing. there are 4 address lines
> with suspect waveforms.
> but the 6502 is good and the buffers i am convinced are good. the input pins
> on the decoder chips don't seem to be shorted to ground or vcc. i don't see
> anything shorting the address lines. i am getting continuity thru the
> traces. i don't see what is causing the problem.
>
> ---------------------------------------------------------------------------
> ** Unsubscribe, subscribe, or view the archives at http://www.vectorlist.org
> ** Please direct other questions, comments, or problems to chris@westnet.com
---------------------------------------------------------------------------
** Unsubscribe, subscribe, or view the archives at http://www.vectorlist.org
** Please direct other questions, comments, or problems to chris@westnet.com
Received on Fri Dec 10 07:01:27 2004

This archive was generated by hypermail 2.1.8 : Fri Dec 10 2004 - 12:50:01 EST