SNA Virtual Console Support provides full
operators on SNA terminal devices and allows the
nals as virtual operator consoles.
SNA Virtual Console Communications Services support the following console func
tions:
System product or CMS editor processing mode
Full screen support for
This support is provided through a virtual service machine (VSM) and the SNA
Console Communications Services (SNA CCS) in
nications Network Application (VM/VCNA) program product (program number
5735-RC5) running in the virtual service machine acts as the interface between
vides the necessary interface between the existing
the VM/VTAM Communications Network Application (VM/VCNA).
The screen management services are divided between the VM/VT AM Communi
cations Network Application (VM/VCNA) and the SNA Console Communi
cations Services (SNA CCS). VM/VCNA is responsible for the physical screen
management and therefore, the device dependent characteristics. Thus,
VM/VCNA handles such things as screen size and redisplay of the input line at the
terminal. SNA CCS is responsible for logical screen management and thus remains
relatively device independent. SNA CCS also passes the terminal input to
reflects status and actions to and from the rest of the
Figure 25 on page 178 illustrates a
support. The VT AM service machine (VSM) consists of an
SNA Virtual Console Communication Services 177