Re: Cinematronics BPROM alternatives

Yes, I had tried the 22V10 but it would only hold a fraction of the table,
maybe 1/4, if that. I got the impression that the architecture just doesn't
lend itself well unlike the much more flexible xc9536 that holds the whole
thing in just 14%. No parts supported by Atmel WinCUPL will fit. I tried
ATF750 and ATF 2500 as well. They held more, but not near all.

I don't have ABEL experience so I can't comment on similarity to CUPL but
I'm pretty sure that Atmel has a downloadable converter and a pdf tutorial
on ABEL to CUPL conversion.

I saw your post with the SW_deprom and thought that was very nicely done. I
considered the same approach to the CCPU board because there are 4 chips in
a row in one area. However, J14 and E8 are pretty far away so I decided to
make each chip separately. Separate replacements would allow folks to get
just the one that they need, allow for the scattered arrangement, and it
would allow them to be used to replace other bproms on other games.

William Boucher

----- Original Message -----
From: "Clay Cowgill" <c.cowgill@comcast.net>
To: <vectorlist@vectorlist.org>
Sent: Friday, October 09, 2009 2:10 AM
Subject: RE: VECTOR: Cinematronics BPROM alternatives

>> I have also designed a replacement for the larger BPROM
>> (74S287 256 x 4) located at F14. For a first effort, it is
>> based on a Xilinx XC9536. I couldn't get all of the data to
>> fit into a cheaper SPLD but I'm open to suggestions if
>> someone has a smaller cheaper chip in mind for the job.
>
> What did you try to fit that in, SPLD-wise? (22V10?) I have a crapload
> of
> 26V12's in PLCC if the Atmel stuff can target that. (I don't think they
> ever made one though.) How close is CUPL To ABEL? I could try fitting it
> with my old Lattice software into the 26V12 if you wanted.
>
> -Clay
>
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Received on Fri Oct 9 10:46:01 2009