User guide

Configuring an M1 CPU with Modsoft
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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 and your options vary, depending on whether or not
your Processor Adapter supports an I/OBus network.
Processors For
I/O Bus
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 32
words is 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, 17, in order to increase the size of the full logic area.
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Default 512 words
Minimum 17 words
Default 32 words
Minimum 17 words