It's a Western Digital part, and the SMsC people don't have a sheet on it
either. You can buy them from Rochester Electronics, however.
Dick
----- Original Message -----
From: "ajp166" <ajp166_at_bellatlantic.net>
To: <classiccmp_at_classiccmp.org>
Sent: Monday, December 17, 2001 5:27 PM
Subject: Re: MITS 2SIO serial chip?
> From: Ben Franchuk <bfranchuk_at_jetnet.ab.ca>
>
>
> >> that will do 125ns easily. Or you could easily find a d765
> >> off an old board or NOS from JDR.
> >Do you know of a WD37C65 data sheet on the web?
>
>
> Check SMC for it.
>
> >> parts and the requisite connections. Of the latter, the fewer the
> >> better for both buildability and reliability.
> >Hmm what ever happened to sockets and repairable stuff.
>
>
> I hate sockets and try to avoid them, I've had equipment that
> didn't use the machined pin sockets and most all had to be
> rebuilt sans sockets at one point or another.
>
> >
> >> package = $1.35. So instead of Xilinx's $4.40 OTP chip we use a 8 pin
> PIC
> >> and the serial EEPROM for a total of $2.29 and get
> re-programmability...
> >
> >A good solution but this is a one-shot project so price is not a major
> >problem
>
>
> A lousy one if you have a raft of TTL and few FPGAs. ;)
> I have a few of the Lattice and Xilinx tools, older ones and the synario
> stuff too. I just dont get all that excited about it. I've designed a
> cpu
> and built it years ago, it out of my system and not worth repeating.
> Any cpu I'd do would need software and that means it would likely
> be a copy of something... likely something I have.
>
> Allison
>
>
Received on Mon Dec 17 2001 - 20:27:28 GMT