test-drb March 2004

test-drb@ccmp.vtda.org

273 participants
673 discussions

Opening a VAX2000

by curt＠atarimuseum.com

You've reached Curt Vendel of the Atari Museum. I will be travelling and will be exhibiting the Atari Museum at the Phillyclassic 5 videogame show from March 19-21 and will be returning on March 22nd. I will try to respond to your emails between the 22nd-23rd as I catch up with my email. If this is an urgent issue and you need immediate assistance and access to our archives and materials, please contact Karl Morris at: karlmorris(a)atarimuseum.com Thank you, Curt Vendel Curator: The Atari Museum

20 years, 4 months

M5977 PDP11 SCSI card dip's

by curt＠atarimuseum.com

20 years, 4 months

M5977 PDP11 SCSI card dip's

by curt＠atarimuseum.com

20 years, 4 months

Opening a VAX2000

by curt＠atarimuseum.com

20 years, 4 months

KA620 (was Opening a VAX2000)

by curt＠atarimuseum.com

20 years, 4 months

Setting a DECserver free

by adamg＠pobox.com

If you Google for 90stalps there is a document where you can look up by the DExxx model number (from the module's label) whether it needs the 12/5 supply or the 5-only supply. It also gives pinouts. Note that the pinouts for the 12/5 and 5-only supplies are incompatible. IIRC you can double-check the pinout with a continuity tester. The metal bolt between the DIN and the backplane connector is grounded. The pinout in 90stalps is as viewed from the PLUG on the power supply cord. >From my notes, here is a pinout for the 5-volt-only modules as viewed from the JACK on the module. G N P |~~~~~~~~~~~~~~~~| G K P [] | backplane conn | G P |________________| G=ground, P=+5V@2A, N=NC, K=empty this is a 7-pin mini-din, but 8-pin plugs can be used. bending one of the pins might help with insertion. ps/2 connectors will NOT work. I have thrown together a supply using a small enclosed switching supply. It works well. These days, one of those 5-volt switching wallwarts is probably also a possibility. Since DIN connectors accept fairly thin wire, you'll want to parallel 3 wires per rail (i.e. one per pin) to provide current handling capacity. -- Adam

20 years, 4 months

Opening a VAX2000

by curt＠atarimuseum.com

20 years, 4 months

ESR meters (Was: Re: [OT] Dodgy electrolytic in 3COM hub)

by curt＠atarimuseum.com

20 years, 4 months

Opening a VAX2000

by curt＠atarimuseum.com

20 years, 4 months

M5977 PDP11 SCSI card dip's

by curt＠atarimuseum.com

20 years, 4 months

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test-drb March 2004