The following examples illustrate a possible use of the service
virtual machine. Refer to PVM publications for details.
The PVM configuration file shown in Figure 1 contains
definition of EP (emulator program) lines. Figure 1. Sample PVM Configuration File
…
*
* BSC lines on the EP communications controller
* whose base subchannel address is 0F7
*
LINK 030 B0F7A R3270
…
LINK 031 B0F7B R3270
…
LINK 032 B0F7C R3270
…
LINK 033 B0F7D R3270
…
LINK 034 B0F7E R3270
…
LINK 035 B0F7F R3270
…
LINK 036 B0F7G R3270
…
LINK 037 B0F7H R3270
…
PROFILE PVM additions to use this support are shown in Figure 2. Figure 2. PROFILE PVM Additions
* For each EP communications controller, whose lines are
* owned by PVM, authorize its utility service virtual
* machine to send commands to PVM and AUTOLOG the user ID.
*
AUTHORIZ EP0F7
CP XAUTOLOG EP0F7
…
The EP0F7 PVM file shown in Figure 3 is
used to start the EP lines automatically. Figure 3. Sample EP0F7 File
* START LINE commands for PVM to execute when signalled
* by EP0F7 userid executing CCLOAD for CTLR device 0F7
*
CP VARY ON 030
CP ATTACH 030 *
START LINE 030
CP VARY ON 031
CP ATTACH 031 *
START LINE 031
CP VARY ON 032
CP ATTACH 032 *
START LINE 032
CP VARY ON 033
CP ATTACH 033 *
START LINE 033
CP VARY ON 034
CP ATTACH 034 *
START LINE 034
CP VARY ON 035
CP ATTACH 035 *
START LINE 035
CP VARY ON 036
CP ATTACH 036 *
START LINE 036
CP VARY ON 037
CP ATTACH 037 *
START LINE 037
When the 3745 is first loaded by the service machine and PVM issues
the VARY and ATTACH commands, the following response is displayed:
xxxx varied online
Line xxxx attached to PVM xxxx
Following recovery of a 3745 failure, where the EP control program
has been reloaded, CP still considers the EP lines online and attached.
When the same PVM command list is executed by the service machine,
the VARY command displays the following response message:
xxxx already online
ATTACH displays the following error message for each line: