IBM Professional Series User Manual page 378

Appendix C. Comparison of VM JPC
and VMjSP
Relationship of VMjPC and VMjSP
VM/PC is based on VM/SP Release 2. VM/PC has
changed some aspects of VM/SP Release 2 to fit its
environment.
Externally, some of the commands and command options
available on VM/PC are not the same as those available on
a VM/SP Release 2 system. In addition, some of the
command response formats may be different from a VM/SP
Release 2 system. Some VM/SP Release 2 commands and
options are not present in VM/PC, since VM/PC does not
have support for tape I/O, virtual readers, or virtual
punches. In addition, the CMS/DOS environment is not
supported on VM/PC.
Internally, the control blocks of CMS are identical in format
with those of VM/SP Release 2 CMS.
If we examine a typical CMS session, some of the differences
between VM/PC and VM/SP Release 2 can be pointed out
and explained.
• Logon screen
You don't have to clear the system logo in order to log
on to VM/PC. In addition, you may specify an
environment to start or you may have a default
environment, specified in your system configuration file.
CP Commands
CP commands that are allowed to have multiple
operands in VM/SP (for example, DISPLAY) will be
allowed only one operand by VM/PC CP.
Appendix C. Comparison of VM/PC and VM/SP C-l