CP6100 I/O Process Programming Manual

Using CP6100: Managing Lines
for LOAD, BOOT --> RUN
for RESET, RUN --> BOOT
The CONTROL command is legal only if the line is in the STOP
state. That state may result from an earlier STOP command, from
an error that caused CP6100 to stop the line, or from a cold-load
of the system if the STARTDOWN parameter was specified in SYSGEN.
EXAMINING AND CHANGING THE CONFIGURATION
CMI provides facilities for changing the configuration of a line.
There are three kinds of changes you can make to affect how a
line operates:
• You can change the program that will be downloaded to the line
the next time the line is started. For example, you can
cause a line running BSC to run ADCCP instead.
• You can change line parameters like the baud rate, the frame
size, or the offset for ASCII/EBCDIC translation. In fact,
you can alter almost any parameter SYSGEN lets you define.
• You can change the range of protocols that a line can run.
For example, you can restrict a line to run only byte
synchronous protocols, or to run only bit synchronous
protocols, or both. (The hardware is capable of running
any protocol, but you can impose a restriction.)
The next few paragraphs describe the commands you use to make
these changes. For syntax and further reference about the
| commands, consult the Communications Management Interface (CMI)
| Operator's Guide.
ALTER LINE <ldev>, PROGRAM
This command lets you specify the file that will be downloaded to
the LIU. Typical uses for this command are error recovery
situations; if you get error messages that suggest an LIU
malfunction--a number of such messages are discussed in Appendix
A--you might want to try downloading first the same file you last
downloaded, then a copy of that file if you suspect that the file
itself might be bad. Another use for this command is to let one
line handle different protocols at different times; the
implication is that various devices can be patched into available
ports, and that the configuration of those ports changes to
accommodate device protocols. Finally, you can use the command
to install a new release of a protocol module or to correct an
error in the SYSGEN configuration file.
October 1985
3-12