Type ASSEMBLE
Source Lines : 1,341
Fixes Applied : 11
Most Recent Version : Thursday, December 7, 1978
Last Fix ID : [HRC072DK]

Module

       DMKHVC

Function

       TO PERFORM SERVICES FOR VIRTUAL MACHINES AS REQUESTED
       VIA THE DIAGNOSE INSTRUCTION.

Attributes

       REENTRANT, RESIDENT, ENTERED VIA 'GOTO' FROM DMKPRVLG

Operation

       THE FUNCTION CODE CONTAINED IN THE ADDRESS FIELD OF THE
       DIAGNOSE INSTRUCTION IS EXAMINED FOR VALIDITY.
       A SPECIFICATION EXECPTION IS REFLECTED TO THE VIRTUAL
       MACHINE IF THE CODE IS UNRECOGNIZED OR NOT A MULTIPLE
       OF 4. A PRIVILEGED-OPERATION INTERRUPT IS GENERATED IF A
       RESTRICTED SERVICE IS REQUESTED BY THE VIRTUAL MACHINE.

       SERVICES AVAILABLE VIA VIRTUAL DIAGNOSE ARE AS FOLLOWS: