Type ASSEMBLE
Source Lines : 1,003
Fixes Applied : 2
Most Recent Version : Thursday, December 7, 1978
Last Fix ID : [HRC013DK]

Module

       DMKTRD

Function

       TO PROVIDE A VIRTUAL MACHINE WITH THE FACILITY TO TRACE
       I/O INSTRUCTIONS WITH OUTPUT ON THE PRINTER, TERMINAL,
       OR BOTH.

Attributes

       REENTRANT, PAGEABLE, CALLED VIA SVC

Calls to Other Routines

       DMKQCNWT - WRITE A MESSAGE TO USER TERMINAL
       DMKVSPRT - WRITE A MESSAGE ON PRINTER
       DMKCVTBH - CONVERT BINARY FIELDS TO HEXADECIMAL
       DMKSCNRD - TO GET REAL DEVICE ADDRESS IN CCU FORM
       DMKSCNVU - TO GET VIRTUAL DEVICE BLOCKS
       DMKSCNVN - TO GET MNEMONIC NAME OF VIRTUAL DEVICE (E.G. DASD)
       DMKSCNRN - TO GET MNEMONIC NAME OF REAL DEVICE
       DMKDSPCH - TO DISPATCH USER
       DMKNEMOP - TO GET MNEMONIC EQUIVALENT OF A 370 OP CODE
       DMKFREE  - TO GET FREE STORAGE FOR TRACE CONTROL BLOCK
       DMKFRET  - TO RETURN TRACE CONTROL BLOCK TO FREE STORAGE
       DMKCFMBK - TO INITIATE A READ FROM A TERMINAL
       DMKPTRAN - TO BRING A USER PAGE INTO MEMORY WHEN NEEDED
       DMKCCWSB - TO OBTAIN SEEK ARGS FOR CCW TRACING
       DMKVATRN - TO PERFORM VIRTUAL ADDRESS TRANSLATION AS NEEDED
       DMKPSASP - TO CHECK FOR STORAGE PROTECTION