DEC VT520 in San Jose

[Bob Rosenbloom via cctalk]

Saw this on Craigslist so if anyone needs one it's reasonable at $35 
working.


https://sfbay.craigslist.org/sby/sys/6060214206.html

Bob

--
Vintage computers and electronics
www.dvq.com
www.tekmuseum.com
www.decmuseum.org

Re: MC68K's on DEUNA's

[Paul Koning via cctalk]

> On Mar 26, 2017, at 3:58 PM, Noel Chiappa via cctalk  
> wrote:
> 
>> From: Bill Gunshannon
> 
>> I doubt Motorolla was in the business of custom making different size
>> chips, even for DEC.
> 
> So, that triggered a question in my mind: why was DEC using the 68K on this
> board, anyway? They had plenty of in-house chips the could have used, e.g.
> the J11. The MC68000 had only a 16-bit bus, so it's not that dissimilar in
> capabilities. Why buy out? Did Motorola offer them a price they couldn't
> resist, or what?

J-11 may have been later.  Also, until fairly late, the DEC in-house 
semiconductor group charged extremely high prices for its chips.  I remember 
the first couple of internal Ethernet MACs were thoroughly uncompetitive with 
LANCE for that reason; some vague memory says this was finally fixed in the 
third generation ("TGEC").

paul

Re: MC68K's on DEUNA's

[Noel Chiappa via cctalk]

> From: Bill Gunshannon

> I doubt Motorolla was in the business of custom making different size
> chips, even for DEC.

So, that triggered a question in my mind: why was DEC using the 68K on this
board, anyway? They had plenty of in-house chips the could have used, e.g.
the J11. The MC68000 had only a 16-bit bus, so it's not that dissimilar in
capabilities. Why buy out? Did Motorola offer them a price they couldn't
resist, or what?

Noel

Re: Wanted: AT 3B2 Ethernet Card ROM images

[Alan Hightower via cctalk]

 

I am looking for ROM dumps for the NI card as well. I've dumped ROMs
from most other cards. I've placed there temporarily here: 

https://www.retrotronics.org/tmp/3b2_romdumps.zip [1] 

I've disassembled the ones I have. They all appear to be based on the
same CIO reference firmware, mostly compiled with a C compiler, share
75% of code between them, do not support PIO access other than to return
the card id code and accept a slot number, and communicate with the host
OS through in/out FIFOs at an address in memory based on the card id. 

-Alan 

On 2017-03-26 00:26, Seth Morabito via cctalk wrote: 

> I'm trying to track down ROM images from AT 3B2 expansion cards.
> I've started with the EPORTS serial card, which I have. What I'd love
> to find is the ROM from the NI Ethernet card.
> 
> Not all ROMs were socketed. Freqently they were soldered, so I know
> that getting these probably won't be easy. If I had an NI card of my
> own I'd desolder the ROMs, but alas, I do not.
> 
> If you have these ROMs, are willing to image them, or -- and this is a
> real long shot -- if you're willing to let me borrow a card for a
> while, I'd greatly appreciate hearing from you.
> 
> Best Wishes,
> 
> -Seth
 

Links:
--
[1] https://www.retrotronics.org/tmp/3b2_romdumps.zip

Re: Introducing the UUCP/Usenet Project

[Mark J. Blair via cctalk]

For a year or two in college, I was running UUCP on my Amiga 1000. I had it 
dialing into the SPARCstation IPC on the computer support desk at UCI. Gack, I 
still remember the pain of hacking the sendmail.cf without the benefit of the 
later m4 macros, in order to get the mail forwarding working.

-- 
Mark J. Blair, NF6X 
http://www.nf6x.net/

Re: New addition to the collection

[Parent Allison via cctalk]

On Mar 25, 2017, at 5:44 PM, Terry Stewart via cctalk  
wrote:

> Re NEC 8201a...
> 
> This is a machine I have  a lot if fondness for.   Wrote many article
> drafts and crunched a lot of numbers on that little unit.
> 
> Terry (Tez)

My only wish is the tech manual it is terrible and inaccurate to boot.

Neat machine and moving toward getting 32k ram and bank 2 installed per club100.


Allison