[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Ravenscar profile and occam on the transputer

Dear Larry, Tony

The "Bed of Nails" is a C004 32-port crossbar switch whose data sheet (including pinout) you can find at:

Not everyone wanted a C004, and it's possible that, at the time we designed the B008, the C004 was not in production, so the 84-pin array was a way for users to construct their own link network without having to bother with configuring the C004.

Lifting the pin array should not cause any damage, but I don't think you will see very much underneath it.

Best wishes


On 20/11/2017 17:54, Lawrence Dickson wrote:
TRY AGAIN AFTER REDUCING SIZE OF ATTACHMENTS . . . sorry if some of you get it twice . . .

Thank you, Tony! I guess RS-422 could do a link because it is capable of 10 Mbits/second according to Wikipedia. But that still leaves the bed of nails a mystery (what did it replace)? Peering under the TRAM-like thing (which I am afraid to pull because it may have some essential connection with the wire wrap on the bed of nails) I see IMS B008 221-CRBD-302-05 dated 1990, which seems to fit page 3 of my User Guide (also dated 1990), except for CRBD instead of CBRD. But surely the bed of nails is not standard.

Close-ups attached.