Nice! Also, Bill, I was going to suggest using a tiny CPLD to replace
the nasty bipolar PROMs. The
tables in the PROM should synthesize to a relatively small number of
gates. You probably could
do the same thing with Star Wars ... hell, I need a few myself :-)!
Clay, I didn't know you did all of these tiny little one-off things for
Ground Kontrol :-)!
Man I gotta get out there :-)!
Ed
Clay Cowgill wrote:
>> I started this message is response to the question "has
>> anyone made any progress on their Cinematronics stuff?" so I
>> thought I'd add this link:
>> http://www.biltronix.com/CCPU_Custom_Chip_Replacements.html
>> I have tested this small devices on my own CCPU boards and so
>> far so good.
>>
>
> Cool, Bill-- and handy. ;-)
>
> I don't know if I posted this here or not (I know I mentioned it somewhere
> or other) a while back, but I did this thing for SW/ESB:
>
> http://www.embeddedengineeringllc.com/swesb/SW_deprom.jpg
>
> Gets rid of all four of the mathbox PROMs on SW/ESB boards (and usually two
> or three *WATTS* of heat generation from the bipolars to boot!).
>
> It is a decidedly un-clever solution. It's just two ~45ns, 5V, OTP EPROMs
> with the mathbox code repeated a bazillion times. ;-)
>
> The one running in our machine at Ground Kontrol has passed 7500 hours now--
> no failures, glitches, or other weirdness. (Anthony commented to me that we
> actually hit a one year anniversary on keeping Star Wars running without
> interruption. ;-)
>
> -Clay
>
>
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Received on Fri Oct 9 00:02:46 2009
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