
HOW TO PATCH 'CP/M-86 FOR THE IBM PC AND IBM PC XT, VERSION 1.1'
TO PERMANENTLY FIX THE 21st CENTURY DATE PROBLEM
(Patch developed by Jake McAllister)

  1. Using a byte-level editor on the CPM.SYS file, locate the
     ASCII bytes at absolute file offsets 37ABh ('1') and 37ACh ('9').

  2. Change the '1' to a '2,' and the '9' to a '0.'  

  3. Save the changes to disk.

  4. Boot your machine from this patched version of CPM.SYS.
  
After making this patch, you may then use normal, non-Y2K-aware
clock/calendar-setting software to set the CP/M-86 system date
and time from the computer's hardware clock.  The software is
available in the 'File Downloads' area of this web site.

NOTE: This patch is specific to 'CP/M-86 For The IBM PC and IBM
PC XT, Version 1.1.'  It will NOT work with any other permutation
of CP/M-86.

'Patching' should always be done to a COPY of the CPM.SYS file, and
not to the file on the original system disks.

As is always the case with this kind of 'free' information, there
are NO guarantees whatsoever.  If you choose to use this information,
you do so entirely at your own risk and peril, and YOU assume all
responsibility for the result.

