Updating the Loader Program Punch a copy of the newly assembled loader, then close the punch. When the punch is closed the two files (DMKLDOOE LOADER and DMKLDOOE TEXT) are sent to your reader. The commands to punch the new loader text file
and close the punch file are:
punch dmkldOOe text (noh
spool ODd * nocont close IPL your virtual reader to read the
LOADER) into your virtual machin e.
loader text file into your virtual
file.
ipl OOc clear
old version of the loader Then the old loader reads the new
machine and creates the new loader When the IPL is complete, the message DMKDSP450W CP ENTERED; DISABLED WAIT PSi is issued. X'404040'. The instruction address in the disabled wait PSW is
Close the punch to punch a copy of the new loader, which was created in
step 4. Also close the reader and printer.
close OOd close OOc close ODe IPL eMS, access a read/write disk as your A-disk, and read the file you
punched in Step 5. Name this file DMKLDOOE LOADER; this replaces the
original DMKLDOOE LOADER file with the new one.
ipl cms
access 191 a
read dmkldOOe loader Save a copy of the original D"KLDOOE LOADER file before you replace it with the updated loader. Part 5. Updating VM/370 373

374 IBM VM/370 Planning and System Generation Guide