RE: Red Baron AVG ROM question

Chris,

I used a 2732, but when I go to the local electronics store I'll try to
pick up some 2532s while I'm getting some more 2516's.

For some reason, I thought that 2500-series were Military-grade temperature
rated, and 2700-series were for regular commercial useage. This thought
sticks in my mind, but I may very well be thinking about another series of
IC's with a similar classification.

Anyone here know the correct distinction between 25- and 27- series EPROMS?

I'm not sure what the "RR" means, or even if the "RR" represents another
character (or is even supposed to be displayed). I don't have a amplifier
laying around to convert the "Z" axis from the boardset into a suitable
voltage level for my scope, and I'm too lazy to build a simple Op-Amp
circuit to do this since I have a replacement set of deflection transistors
on the way that hopefully will allow the monitor to operate again.

At least the self-test runs and operates to some degree with the Red Baron
AUX; this probably eliminates quite a few possibilities.

I can't wait to get this game running again. It arrived in very good
physical condition, but was missing a lot of parts. It couldn't have made
the operator any money with the low number of plays on the counters (even
set at $.50!). I was working on it most of the day yersterday and it's
really starting to look proper. I played Red Baron quite a bit as a kid
(cockpit version only), and even though I have the upright, it's bringing
back a lot of fond memories.

Isn't that what this is all about? I love this hobby.....

         - Matt

At 11:48 AM 5/8/00 -0400, you wrote:
>Matt,
>
> One thing i did notice on the message that John sent about the
>modification is the comment on the 2732 ROM. Did the modification call for
>a 2732 or a 2532? Your message said that you used a 2732, but in the back
>of my mind, I think I remember using a 2532. (I don't recall for sure.)
>Just something else to check. Oh, and the 4 RR error, that is probably
>saying that there is a problem with ROM 4, which is probably the 32k one you
>are trying to add.
>
>Thanks,
>-Chris
>
>-----Original Message-----
>From: Matthew Sell
>To: vectorlist@synthcom.com
>Sent: 5/8/00 10:18 AM
>Subject: RE: VECTOR: Red Baron AVG ROM question
>
>Chris,
>
>Yes, I am using a Red Baron AUX. The self-test isn't completely legible,
>
>I'm displaying it on by scope until replacement deflection transistors
>arrive.
>
>It looks like there may be an error code. I just fired it up this
>morning
>and adjusted the display to fit everything on the screen in test mode
>and
>saw what appears to be a "4RR". This doesn't jive with the error code
>descriptions on the backsheet, so I need to get the monitor happy so I
>can
>see the message correctly (my scope doesn't handle the "Z" input very
>well....).
>
>Thanks for verifying the modification. The game is resetting the NOVRAM
>and
>decoding the joystick inputs, so at least it is communicating in some
>form
>with the AUX. There appears to be no mathbox errors displayed, but the
>sound is kaput as well.
>
>Oh well.... this one goes into my collection kicking and screaming.
>Some
>go peacefully, some resist.
>
>
>
> - Matt
>
>
>
>
>At 01:08 AM 5/8/00 -0400, you wrote:
> >Matt,
> >
> > I did the same modification myself a couple months ago, and it
>worked
> >fine. The schematic differences you see may be due to the fact that
>there
> >were some original RB main boards with an extra ROM socket so you could
>use
> >all 16k ROM's instead of the one 32k. As for the game not playing, do
>you
> >have a RB Aux board? The game will not play with a Battlezone Aux
>board (at
> >least I haven't ogtten it to work). Are you seeing any errors in test
>mode?
> >
> >Thanks,
> >-Chris
> >
> >-----Original Message-----
> >From: Matthew Sell
> >To: vectorlist@synthcom.com
> >Sent: 5/8/00 12:18 AM
> >Subject: VECTOR: Red Baron AVG ROM question
> >
> >Howdy,
> >
> >
> >I recently attempted to modify a Battlezone AVG board to run Red Baron
> >using the modification text listed in the ROM set used for MAME. The
> >modification is listed as follows:
> >
> >All roms 2716 with the exception of H1, which is a 2732 with pin 18
> >pulled
> >up and a wire run to M2 pin 13
> >
> >I performed this modification - and the game runs the self test but not
> >the
> >game. In attempting to troubleshoot the boardset using the Red Baron
> >schematics, I noticed that H1 is listed as an 8316, with the same
> >address/data wiring as Battlezone.
> >
> >???
> >
> >Are the schematics incorrect, or is this modification not necessary?
> >
> >I'd try it out, but ran out of 16K EPROMS..... : )
> >
> >Thanks!
> >
> >
> > - Matt
> >
> >-----------------------------------------------------------------------
>-
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>
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Received on Mon May 8 12:58:05 2000