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The TMB14 Motherboard
TMB M 711 Transputer Motherboard User Manual
97
8.3.1 Links
8.3.1.1 Configuration Processor
The C004’s are configured by the on board T222 transputer. This is
itself programmed by downloading code in through its link 1, which
can be connected to an edge connector signal (ConfigUp on P4 or
P2), to TRAM slot 0 or to VMEbusLink. The T222’s link 2 is taken to
an edge connector signal (ConfigDown P5 or P2). This arrangement
allows a configuration pipeline to be implemented - an indefinite
number of motherboards, of mixed type if necessary, may be daisy-
chained and all of their link switches programmed from the head of
the pipeline:
8.3.1.2 Link Switches
There is a program available to automate the process of making ‘soft’
link connections through the C004’s, called MMS, which is part of the
Inmos software package IMS S514 (this package also includes a
device driver that is compatible with the TMB14). Obviously this
program needs to know the physical connections of the links on the
C004’s and this information is shown in figure 70.
Note that there is no hard-wired pipeline of links between TRAM sites
on the TMB14, so setting of the C004s is essential if more than one
transputer is used.
C004
C004
T222
VME I/F
SLOT 0
C004
C004
T222
C004
C004
T222
Figure 69. Configuration Pipeline