Type ASSEMBLE
Source Lines : 645
Fixes Applied : 1
Most Recent Version : Friday, August 7, 1981
Last Fix ID : [R13707DK]
Module
DMKVSJ
Function
TO SIMULATE THE OPERATION OF PRIVILEGED I/O INSTRUCTIONS
ISSUED BY VIRTUAL MACHINES (HIO, CLCH)
Attributes
REENTRANT, RESIDENT, ENTERED VIA GOTO FROM DMKPRVLG FOR THE
SIMULATION OF AN INSTRUCTION (HIO, CLCH)
Operation
1. BRANCH TO HANDLE HIO AND CLCH AS DESCRIBED IN
SECTIONS A-B RESPECTIVELY.
2. RETURN TO DMKVSI AS NEEDED.
. DMKVSICH
. R9 FROM GETLOCK SUBROUTINE
Calls to Other Routines
DMKFREE - TO OBTAIN FREE STORAGE FOR IOBLOKS
DMKIOSQV - TO SCHEDULE THE VIRTUAL OPERATION
DMKVCASH - TO SIMULATE A HALT I/O TO A VIRTUAL CTCA
DMKSTKIO - TO STACK AN INTERRUPT DUE TO THE COMPLETION OF A
VIRTUAL ENABLE CAUSED BY A HIO
DMKDSPCH - EXIT VIA GOTO AFTER I/O IS SCHEDULED BY DMKIOSQV
DMKTRDSI - TO TRACE AN I/O OPER. (SIO, TIO, HIO, TCH, CLCH)
DMKVSCVR - TO VERIFY THAT THE NOTRANS OPTION IS VALID
DMKVIOIN - IOB INTERRUPT RETURN ADDRESS (IOBIRA)
DMKCCHRF - CALLED TO REFLECT CHANNEL CHECK TO VIRTUAL MACHINE