Transtech Transputer, User Manual

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The TMB12 Motherboard
TMB M 711 Transputer Motherboard User Manual
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accidentally wire to the wrong connector - this could cause
permanent damage to the board.
Connector P1 carries 32 links from the electronic switches, whilst
connector P2 carries a number of board and system services.
The P1 edge connector brings 32 transputer links out of the TMB12
for connection to other boards. Table 27 shows the pinout of this
connector.
When looking at the component side of the TMB12 with the DIN
connectors to the right, pin 0 of the connector is at the top. This is
also true when the TMB12 is mounted into a Transrack. The
numbering of the links is consistent with table 30 and the numbering
scheme used by NCS.
In order to assist in connecting standard link cables to the edge
connector, the TMB12 comes with a break out board in the cable
pack. This plugs into the P1 edge connector and brings the links out
onto standard link plugs.
7.2.3 The P2 Edge Connector
Edge connector P2 carries:
• the power supply (+5V required, rated @ at least 3Amps),
• up, down & subsystem,
• ConfigUp & ConfigDown,
• PipeHead & PipeTail,
• a link from the C004 switches,
• a link to the K1 header block,
• and a number of uncommitted pins (connected to P4).
Note that under normal operation (the TMB12 mounted in a
Transrack), sufficient power and cooling are provided. A power cable
is provided with the TMB12 for stand-alone operation, but it is not
recommended that stand-alone operation be permanent.
Table 28 gives the detailed pinout of this connector.
In order to allow standard link and reset cables to be attached to the
TMB12, a special back-to-back connector is supplied in the cable
pack which has a number of keying pins (either pins removed or pins
sleeved) which assist in locating the cables to the correct point. This
is shown in figure 59.