PC Exchange Update Information

** WARNING ****************************************************************
*                                                                         *
*  DO NOT use PCX for writing on your mission-critical diskettes! Always  *
*  use intermediate "scratch" disks for transfers.                        *
*                                                                         *
*  PCX has been tested on a VAXstation 3100/M38 with an RX23S diskette    *
*  drive, and a VAXstation 3100/M30 with an RX23 diskette drive.  With    *
*  the exception of a minor problem on the M30/RX23 combination (noted    *
*  below), PCX does work with both these combinations.  RX33 users:       *
*  if PCX works for you, please let me know!                              *
*                                                                         *
***************************************************************************

Version 1.4, 03 August 1990

 The READ, WRITE, and DELETE commands now all support wildcards,
 using VMS-type notation.

 Sector caching has been added to improve performance a bit.

Version V1.3-2, 01 August 1990

 The sector-count field of the boot parameter block was incorrectly
 being treated as the number of clusters (which is the same for 1.44M
 diskettes, but different for 720K diskettes).

 For users of the RX23 diskette drive (non-SCSI version, device
 name DUA2) and 1.44MB diskettes: if PCX returns with the message
 MOUNT-F-FORMAT, use MOUNT/FOREIGN to mount the diskette prior to
 running PCX.

Version V1.3-1, 31 July 1990

 The table of month names was one off.

Version V1.3, 30 July 1990

 This version fixes a couple of minor bugs in, and makes a couple of
 minor improvements to, the directory listing code.

 Also included is an improved exit handler that closes all open files
 before the program exits.  This helps prevent sectors from going
 missing if an error or ctrl-Y happens during a file write.

 Also fixed is a bug introduced in V1.1 -- READ/BINARY would
 work fine, but non-binary READs wouldn't.

Version V1.2, 26 July 1990

 This version fixes bugs in the FAT maintenance code.  It also eliminates
 the problem where the RX33 wasn't being recognized in HD mode.

Version V1.1, 26 July 1990

 This version fixes bugs in the READ/BINARY and WRITE/BINARY commands.

Version V1.0, 25 July 1990

** WARNING **

 This is the first release of PCX, so EXPECT BUGS!  DO NOT use PCX on
your mission-critical diskettes!  Always use intermediate "scratch"
disks for transfers.

 PCX has been tested on a VAXstation 3100/M38 with an RX23S diskette
drive.  It should work with the RX23 in the 3100/M30's and the RX33
on other systems, but until someone tests it, I won't know for sure.

 The FORMAT command does not do a low-level formatting pass, nor
does it verify the diskette for bad sectors.  This speeds things
up considerably, but leaves open the possibility of corrupted sectors
getting through.  Be careful.

If you have found a bug, please report it to me by E-mail at:
        (Internet)  madison@vms.ecs.rpi.edu
        (BITNET)    MADISON@RPIECSVX or MADISON@RPIECS
Thanks.
-Matt