Method of Operation
This section describes those functions that
are perfor.ed by the DftKSSP progra.. There
is only one .ethod of operation diagra. and
that is Diagra. 8-1.
164 IBft VM/370 Service Routines Program Logic

Input Processing X'002' -,- ____ --,:> Initialize DMKSSP processing. :> 2 Find the console. I GR6 RCHBLOK LF 3 Define the system. :> IRCUBLOKS I RCHBLOKs I I I II GR7 RCUBLOK II GR8 RDEVBLOK 1 ..... 1
i I I I I Notes 11 2
3
Registers 11 and 12 are set up as base
registers. The new I/O PSW, new mach· ine check PSW, and new program check PSW are set up and all interrupts are
disabled. If the console address is valid, DMKSSP displays VM/370 STARTER SYSTEM VERSION n.n
*** DO YOU WISH TO REDEFINE YOUR SYSTEM *** (YES, NO): If the response is YES, proceed by
redefining the system (see step 3). If the response is NO, DMKSSP proces·
sing is done. Proceed to step 4. First, a!! the control blocks and their
pointers are cleared and the system
residence device is set up.
DM KSSP must find the console. If the console is not at 009 or 01 F, DM KSSP enables for interrupts and waits until the operator signals attention to identify
the console. The CPU model is checked
and if it is valid, DMKSSP builds the real control blocks for the console, and
displays VM/370 STARTER SYSTEM VERSION n.n DMKSSP prompts the operator to
reconfigure the system. DMKSSP displays
ENTER PRINTER ADDRESS (cuu):
ENTER DEVICE TYPE (1403,1443, 3211): and buikls the printer real control blocks according to the operator's response.
DM KSSP displays
ENTER DEVICE ADDRESS (cuu):
ENTER DEVICE TYPE (2540P, 3525):
and builds the punch real control blocks according to the operator's response. I 4 Go to DiviKCPi.
Module Label Ref DMKSSP IDMKSSP011 I DMKSSP HDRMSG REDEFINE DMKSSP MAINLINE I II FINDCONS VLDCON HDRMSG PRTLAB PCHLAB Diagra. 8-1. DMKSSP--The Starter Syste. I ------, Tlbl I . IDMKCPI Notes
and builds the reader real control blocks according to the operator's response.
DM KSSP displays
ENTER ADDRESS WHERE PID TAPE IS MOUNTED (cuu):
ENTER DEVICE TYPE (2401, 2415, 2420, 3420): and builds the tape real control blocks according to the operator's response.
DM KSSP displays ENTER ADDRESS WHERE SCRATCH TAPE IS MOUNTED (cuu):
ENTER DEVICE TYPE (2401,2415, 2420, 3420) :
and builds the tape real control blocks according to the operator's response.
DM KSSP displays I ENTER DEVICE ADDRESS WHERE SYSTEM RES:DENCE WILL BE BU!LT
(cuu):
ENTER DEVICE TYPE (2319,2314, 3330, 3340, 2305): and builds the disk real control blocks according to the operator's response.
DM KSSP then asks the operator to
verify the configuration by displaying
*** SYSTEM DEFINITION COMPLETED *** cuu PRINTER cuu PUNCH cuu READER
cuu PID TAPE cuu SCRATCH TAPE cuu NEW SYSTEM RESIDENCE cuu SCRATCH PACK ARE THE ABOVE ENTRIES CORRECT (YES,NO): If the operator responds NO, the entire
system definition process is repeated. I RDEVBLOKS! GR10 !PL device address
Module Label PIDLAB BKUPLAB ISYSLAB WORKLAB 4 Control is transferred to DMKCPi with DMKSSP XPRINiT the address of the IPL device in general register 10. Ref
Chapter 8. The V!/370 Starter syste. 165