[Info-vax] terminal servers etc

[Johnny Billquist]

On 2013-01-09 11:58, F H wrote:
> I found this information on/inside my DECserver 90M devices (with and
> without flash):
>
> Without flash:
> - Part number: DSRVH-P
> - Printed circuit board lists Cabletron as the manufacturer.
> - PCB lists part number 9002526-00.
> - PCB has no free place/slot/connector to install a flash card.
>
> With flash:
> - Part number: DSRVH-N
> - PCB lists Digital as the manufacturer.
> - PCB lists part number 50-22282-01.
> - PCB has a connector slot with a small build-up PCB on it containing
> 4 AM28F020 chips (this is 4 times 2 Mbit = 1Mbyte EPROM)
> - Supplemental removable chip AM27C010 sits on the main PCB (= 1 Mbit
> EPROM = 128Kbyte, I do not know what it serves at).
>
> So the two versions have a different PCB, that is why someone who
> looks inside a flashless 90M has the impression that it is not
> possible to install a flash on a 90M.

Your part numbers sortof disagree with Wikipedia (however, Wikipedia 
isn't always that great a source).

"There were three iterations of the DECserver 90M: DSRVH-M*, -A*, 
configured without Flash RAM; the DSRVH-N*, -D*, configured with 1 MB of 
Flash RAM; DSRVH-P*, -R* configured with 2 MB of Flash RAM. All 
supported expanded multi-protocol connections via LAT, Telnet, SLIP, 
TN3270, CSLIP and PPP."

	Johnny

-- 
Johnny Billquist                  || "I'm on a bus
                                   ||  on a psychedelic trip
email: bqt at softjar.se             ||  Reading murder books
pdp is alive!                     ||  tryin' to stay hip" - B. Idol