Planning Considerations for CMS • Resident disk space for application programs (CMS commands, user
programs,IBM Program products) --the amount of space needed is
program-dependent, and must be assigned by you.• Work space for application programs (CMS commands, user programs, IBM Program Products) --the amount of space is program-dependent, and
must be assigned by you.
Device SupporteMS supports the virtual machine devices shown in Figure 2. r , Virtual Virtual Symbolic , IBM Device Address
1
Name Device Type3210,3215,1052 cuu
2CON1 System console 2314,231Q,3330,3340,3350 190 DSKO System disk
(read-only)2314,2319,3330,3340,3350 191
3DSK1 Primary disk
(user files)2314,2319,3330,3340,3350 cuu DSK2 Disk (user files) 2314,2319,3330,3340,3350 cuu DSK3 Disk (user files) 2314,231
Q
,3330,3340,3350 192 3 DSK4 Disk (user files) 2314,2319,3330,3340,3350 cuu DSK5 Disk (user files) 2314,2319,3330,3340,3350 cuu DSK6 Disk (user files) 2314,2319,3330,3340,3350 cuu DSK7 Disk (user files) 2314,2319,3330,3340,3350 19E3 DSK8 Disk (use r files) 2314,2319,3330,3340,3350 cuu DSK9 Disk (user files) 1403,3203,3211,1443 OOE PRN1 Line printer 2540,2501,3505 OOC RDR1 Card reader 2540,3525 OOD PCRl Card punch 2401,2402,2403,2415, 181- 4 TAP 1-TA P4 Tape dri ves 2420,3410,3411,3420 1The device addresses shown are those that are preassembled into the CMS resident device table. You can change the virtual machine , addresses by using the CP DEFINE command. 12The virtual address of the system console may be any valid I multiplexer address. 1
3
The virtual device address (cuu) of a disk for user files can be any I valid System/370 device address, and can be specified by the CMS user , when he activates a disk. If the user does not activate a disk , immediately after loading CMS, CMS automatically activates the user's I primary disk (A-disk) at virtual address 191, the D-disk at 192, and , the Y-disk (a read-only extension of the system disk) at 19E.
L
Figure 2. DevicesSupported by a CMS Virtual Machine Under CP, unit record devices and the system console are simulated
and mapped to different addresses and different devices. For instance,eMS expects a 3215, 3210, or 1052 type of operator's console, but many
terminals are 2741s or3270s. Regardless of the real device type, the
virtual system console is a 3215. The control program(CP) of VM/370 handles all channel program modifications necessary for this simulation. eMS virtual disk addresses are mapped by CP to different real device
addresses.20 IBM VM/370 Planning and System Generation Guide
programs,
program-dependent, and must be assigned by you.
must be assigned by you.
Device Support
1
Name Device Type
2
(read-only)
3
(user files)
Q
,3330,3340,3350
3
The
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Figure 2. Devices
and mapped to different addresses and different devices. For instance,
terminals are 2741s or
virtual system console is a 3215. The control program
addresses.