Copyright....1983 by Digital Research
CP/M Plus and SID are trademarks of Digital Research.
Compiled July 1983
Note: This file is extracted from the file called CPM+PAT.PAT that
exists on some RCP/M systems. This patch has an error in
that file. This is corrected and verified on the phone with
DRI's technical support center. 30 Oct 84....dave mabry
Program: DIRLBL.RSX
Products and Serial Numbers Affected: CP/M Plus.. V3.0 2-000-00001
through 2-000-xxxxx
Error Description:
In some circumstances, DIRLBL destroys critical addresses at the end
of the file descriptor area. It also does not allocate enough local
stack for some BIOS implementations. Both situations result in a
hung system.
Patch Procedure:
Make a back-up copy of DIRLBL.RSX before making any changes. Use
SID.. to patch DIRLBL.RSX with the following series of commands:
A>ren dirlbl.sav=drlbl.rsx
A>sid dirlbl.sav
CP/M 3 SID - Version 3.0
NEXT MSZE PC END
0700 0700 0100 D4FF
#s101
0101 1E 0
0102 04 5
0103 00 .
#s230
0230 1E 3E
0231 05 .
#a375
0375 call 053e
0378 .
#m61E,6FF,700
#f600,6FF,0
#a63e
063E mov e,m
063F inx h
0640 mov d,m
0641 xchg
0642 shld 04ad
0645 ret
0646 .
#f780,79f,0
#f7e0,7ff,1a
#s788
0788 00 8
0789 00 .
#wdirlbl.rsx,100,7ff
000Eh record(s) written.
#g0
A>gencom set.com
GENCOM completed.
A>gencom set.com dirlbl.rsx
GENCOM completed.
A>
Licensed users are granted the right to include these changes in
CP/M Plus V3.0 software.
