Re: Red Baron AVG ROM question

The only difference that I know of is that two of the Chip select lines are swapped.
Unfortunately, one is active high and one is active low. So, that is where the problem
comes in. You can re-jumper the boarset to swap the two pins back if you want, or make a
small conversion socket to swap the two.
  On another note, they also have different programming voltages I belive, but that
doesn't effect the 'use' side of things.

jess

Matthew Sell wrote:
>
> 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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Received on Mon May 8 13:06:35 2000