DECstation 5000/120 & Ultrix/UWS 4.2 announcments
Richard Wood
rwood at pa.dec.com
Thu May 2 09:41:27 AEST 1991
archerb at kuhub.cc.ukans.edu writes:
|>
|> Two quick things on the new DEC RISC & Ultrix announcments. From the
|> preliminary info on the DECstation 2000/120(125) platforms it appears that
|> some or all of the 3100 motherboard is retained. We'd be interested in
|> the new models, *if* the ethernet controller used were the same as the
|> 5000/200 (not the 2100/3100 controller). Anyone seen anything on this?
None of the motherboard for the 3100/2100 is retained. The new
product is a complete redesign that could best be described as a
"minimization" of the DS5000/200. On the ethernet controller, this is
from the technical overview of the new DS5000/100:
Ethernet Connect
A ThickWire Ethernet controller with a 15-pin DSUB connector is
implemented via a LANCE (Local Area Network Controller for
Ethernet) chip. The I/O control ASIC supports DMA transactions
for the LANCE, which manages transmission and reception of
packets via a dedicated buffer in main memory.
To connect a DS 5000/100 Series workstation to a ThinWire
Ethernet network, a Digital ThinWire Ethernet Station Adapter
(DESTA) is used in conjunction with a ThinWire Ethernet
(T-connector), a ThinWire Ethernet terminator, and a
ThickWire-to-DESTA transceiver cable. To connect the DS
5000/100 Series to twisted pair, a commercially-available
twisted-pair-to-ThickWire adapter may be used.
An optional ThickWire Ethernet controller is available on a
single-width TURBOchannel option card.
I believe this is the same chip used in the DS5000/200 (the LANCE
chip) although I know that DMA is new. The ASIC doing the DMA was
developed in conjunction with this product.
-- ---------------------------------------------------------------------
Richard Wood Corporate Worksystems Team Digital Equipment Corp.
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