Part 1 r----1 I B I L---..I II A virtual machine
operator logs on r----1 II I C I Hardware assist status: CP assist off,
virtual machine assist
on,
expanded virtual machine
assist off,
virtual interval timer
assist on II machine operator may issue the following
commands: SET ASSIST OFF SET ASSIST NOTKR SET ASSIST OFF NOTKR i i
Virtual machine operator
issues SET ASSIST OFF II Virtual machine operator
issues SET ASSIST NOTKR L- __________________________ II Virtual machine operator
issues SET ASSIST OFF NOTKR II Results: exp. virt. mach. assist
off,
virt. mach. assist off,
virtual interval timer assist off " L---.J ••• Results:
virt. mach. assist
on,
exp. virt. machine
assist off,
virt. intvl. timer assist off Virtual .achine
operator issues SET ASSIST TKR r--. I C I L---..I Part 2
Virtual machine
operator issues SET ASSIST ON TKR Virtual machine
operator issues SET ASSIST ON i I ,--I-, I C I L---J Part 2 I I .-a-, I E I L---..I Part 2
Figure 27. Hardware Assist Relationships (Part 2 of 4)
Results:
virt. mach. assist
off,
exp. virt. machine assist off,
virt. intvl. timer assist off
Virtual machine operator issues SET ASSIST ON TKR to
turn virt. machine assist on, expanded
virt. mach. assist
off, virt. interval timer assist on
i I r-, I C I L---..I Part 2
Appendix A: VM/370 Extended Control-Program Support 1-413

Part 1 I D I L----J II I A virtual machine I I operator logs on I II , Virtual machine extended I control status is: , CP assist on, I virt. mach. assist off, , expanded virtual machine I assist off, I virtual interval timer, assist off , 1 II ,
Because no VM/370 ECPS I functions are on, an I error message is dis- I played if the virtual I machine operator issues I SET ASSIST TMR or SET I ASSIST ON I r--- I The system operator must issue I SET SASSIST ON and SET CPASSIST ON I to enable all the V8/370 ECPS I functions L---- Figure 27. Hardware Assist Relationships (Part 3 of 4) 1-414 IBM VM/310 System Logic and Problem Determination--Volume 1