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