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Warning: The 3745 operates in several modes: data streaming/high speed/OCI
mode, as defined in the host IOCP generation. The data streaming YIN value
must match the IOCP PROTOCOL specification. PROTOCOL
=
S means data
streaming
=
YES, PROTOCOL
=
0 means data streaming
=
NO (OCI mode is
set). If there is a mismatch between the CA data streaming option and the IOCP
setting, an IPL abend (CLOP 300A)
will
occur at loading time.
Data Streaming Speed
• CDF option is 1 when a 1 MB channel is used.
• CDF option is 2 when a 2 MB channel is used.
• CDF option is 3 when a 3 MB or 4.5 MB channel is used. (Recommended
option)
Note: These values are the host channel speeds, not the actual transfer
rates which are much lower. The 3745 may also be connected to a 4.5 MB
channel attachment though it operates at its own speed.
High-Speed Data Transfer (HSDT)
High-speed data transfer is a basic channel feature also called data-in/data-out
(DIDO) feature. This information (Y
or
N)
is mandatory. When TPS is installed,
HSOT must be specified for both the A and B interfaces of the channel adapter.
The following table shows for every host type, and according to the channel
type, whether the HSOT feature can be used.
Host
HSOT through
HSOT through
HSDT through
Type
Byte Channel
Block Channel
Selector Channel
308X
YES
YES
NO
3090
YES
YES
NO
ES/9000
YES
YES
NO
4341
YES
YES
YES
4361
YES
YES
NO
4381
YES
YES
NO
937X
NO
YES
NO
Byte Multiplexer Channel
This information (Y
or
N) is mandatory. If TPS is present, it must be specified
for both the A and B interfaces.
Appendix B. CA Option Settings
8-3
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