Help with Cegelec CGA transputer boards

Help with Cegelec CGA transputer boards

Post by afh » Tue, 19 Aug 2003 22:29:28


i guys,
I got these two Cegelec CGA transputer boards off ebay - where else? :)
They are double eurocard/VME format with p1 & p2 connectors.
One has 4 transputers, each with 4x72pin SIMM sockets, the other
has 6 transputers, each with 1Mbyte DRAM. All 425's. Now I'm
trying to connect these up to my B008 but I can't figure out some
of the pins on the p connectors namely any form of system services.
I know that all transputer Resets are connected together, same with
the Analyse. Error pins are buffered ('240) but to where?
(ErrorIn at GND)
The first four pins of rows A&C on the P1 connector 'might' be some
form of subsystem services i.e.down? But I can't figure the logic
especially since I can't find the driving net for Reset or Analyse on the
board. Also what's unusual (I think anyway) is the ProcSpeedSelect
(PSSx) pins on the p connectors.
So anybody have a pinout/ fill in the blanks before I apply power and
guess?
Cheers
Anthony

Here's what I've got so far on the 6 transputer board,
BTW all links are buffered ('244) with parallel/series resistors.

P1
A B C
1 ? GND ?
2 ? GND ?
3 ? GND ?
4 ? GND ?
5 GND GND GND
6 5V 5V 5V
7 L0SP GND PSS2
8 PSS0 GND PSS1
9 LinkOut3 GND LinkIn3
10 LinkOut2 GND LinkIn2
11 LinkOut1 GND LinkIn1
12 LinkOut0 GND LinkIn0
13 GND GND GND
14 5V 5V 5V
15 L0SP GND PSS2
16 PSS0 GND PSS1
17 LinkOut3 GND LinkIn3
18 LinkOut2 GND LinkIn2
19 LinkOut1 GND LinkIn1
20 LinkOut0 GND LinkIn0
21 GND GND GND
22 5V 5V 5V
23 L0SP GND PSS2
24 PSS0 GND PSS1
25 LinkOut3 GND LinkIn3
26 LinkOut2 GND LinkIn2
27 LinkOut1 GND LinkIn1
28 LinkOut0 GND LinkIn0
29 GND GND GND
30 5V 5V 5V
31 ? ? ?
32 ? ? ?

P2
A B C
1 ? ? ?
2 ? ? ?
3 ? ? ?
4 ? ? ?
5 GND GND GND
6 5V 5V 5V
7 L0SP GND PSS2
8 PSS0 GND PSS1
9 LinkOut3 GND LinkIn3
10 LinkOut2 GND LinkIn2
11 LinkOut1 GND LinkIn1
12 LinkOut0 GND LinkIn0
13 GND GND GND
14 5V 5V 5V
15 L0SP GND PSS2
16 PSS0 GND PSS1
17 LinkOut3 GND LinkIn3
18 LinkOut2 GND LinkIn2
19 LinkOut1 GND LinkIn1
20 LinkOut0 GND