
Configuring an M1 CPU with Concept
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870 USE 101 00 V.2.2
Changing the Size of the I/O Map
Introduction
The default size of the I/O Map is 144 words. You may want to adjust this number
to provide more support for an I/OBus network or to increase the size of the full
logic area.
Processors for
I/OBus Networks
With I/OBus, an I/O Map table is used to define the number, location and type of I/O
devices on the network bus.
All Other
Processors
Other Processor Adapters only use the I/O Map for local I/O. The default of 144
words is more than sufficient for any TSX Momentum I/O base. Depending on the
requirements of your I/O base, you may be able to reduce the number of words to
the minimum, 4, in order to increase the Available Logic Area.
Continued on next page
Default 144 words
Minimum 4 words
Maximum 6143 words
Default 144 words
Minimum 4 words
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