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2000-06-30
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CP/M V2.2
Patch 01, MOVCPM, 1/21/82
Copyright 1982 by Digital Research
CP/M is a registered trademark of Digital Research.
DDT is a trademark of Digital Research.
Compiled November 1982
Program: MOVCPM
Products and Serial Numbers Affected: CP/M V2.2
Error Description:
The following modification affects only CP/M systems that use
the optional blocking and deblocking algorithms listed in the CP/M
Operating System Manual. When you update a file under systems
using the algorithms with no data added to the file, the last block
of updated records is not written to that file. Contact Digital
Reserach or your CP/M distributor if you are not certain that this
patch applies to your system.
Patch Procedure:
Make a back-up copy of MOVCPM.COM before you use DDT to make
the following changes. Use the Assemble command (A) and the Set
command (S). After you make the changes, return to the Console
Command Processor using the G0 command and save the modified memory
image on disk. Update the memory image on tracks 0 and 1 by
executing the new MOVCPM program as described in the CP/M Operating
System Manual and by integrating your customized I/O system.
A>ddt movcpm.com
DDT VERS 2.0
NEXT PC
2700 0100
-alcd2
1CD2 nop Old instructions were
1CD3 nop DCR C
1CD4 lxi h,0 DCR C
1CD7 . JNZ 12DF
-G0
Number of pages to save
is determined from value
displayed under NEXT.
A>save 38 movcpm.com
Install this patch on all CP/M systems that use the
blocking/deblocking algorithms listed in the CP/M Operating System
Manual.
Licensed users are granted the right to include these changes
in CP/M V2.2 s