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SECTION IV
Configuring Within IOM
Objectives of This Section
1.
To show how you determine the number of physical I/O
channels required for the peripheral subsystems you
wish for your system.
To show how, by using the information from #1 above,
you determine the quantity of 12" x 12" circuit
boards required to contain the electronic logic for
the number and type of physical
I/O channels you
desire. Also, in this section you will determine
whether there are sufficient channel board spaces
available on a standard basis or via option in the
Level 66 system you wish to configure.
To show how,
by using the information from #1 above,
you determine how many logical channels or data paths
must be assigned for the quantity of physical
I/O
channels you wish. We will also explain the role of
logical channels,
indicate how many may be assigned
optionally beyond the quantity required, and how they
are physically assigned.
To show how, by using the information from #3 above,
you determine how to assign the scratchpad
capabilities furnished by the data rate expansion
(DRE)
feature. We will also cover the role of DRE
feature, how it is obtained, and how it is physically
assigned to appropriate logical channels.
Steps for Configuring Within IOM in ICU
1.
There is no type number. This IOM is part of ICU in
ICU—packaged base CPS systems.
These steps apply to
all
ICU-oriented models.
25
DH92.
Rev.
E
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