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            Adaptec EZ-SCSI 1.x/2.x to EZ-SCSI 3.0 Upgrade
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How to run PATCH.EXE 
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This program will upgrade your EZ-SCSI ASPI managers (from EZ-SCSI 1.x
or EZ-SCSI 2.x) to EZ-SCSI 3.0.  The version of EZ-SCSI you have is
printed on your floppy label.  In addition, users of EZ-SCSI 2.x will
also have their CD-ROM driver updated to the EZ-SCSI 3.0 level
(ASPICD.SYS).  To upgrade, type:

PATCH C:\SCSI

where C:\SCSI is the location of your previous EZ-SCSI installation.
If you would like to view which files were updated, you may want to
redirect the patch program output to a file.  For example, to redirect
to EZPATCH.TXT, type:

PATCH C:\SCSI > EZPATCH.TXT

Backups of the older versions will be stored in an OLDSYS subdirectory
(e.g. C:\SCSI\OLDSYS).  Also included in this subdirectory, you will
find UNPATCH.BAK.  You can rename this file to UNPATCH.BAT and run it
if you wish to restore your drivers to the previous version.

If you run Microsoft Windows, you should copy the files WINASPI.DLL and
VASPID.386 to your Windows' SYSTEM subdirectory.  For example:

COPY C:\SCSI\VASPID.386 C:\WINDOWS\SYSTEM
COPY C:\SCSI\WINASPI.DLL C:\WINDOWS\SYSTEM

NO changes to your .INI files are necessary (e.g. SYSTEM.INI).


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Adaptec EZ-SCSI 3.0
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For $29, you might want to consider upgrading to the full version of
Adaptec EZ-SCSI 3.0.  Numerous enhancements are included:

o  Easy to use Windows installation utility
o  Backup Basics by Arcada Software, a Conner Company (Windows SCSI tape
   backup software, DOS emergency restore)
o  Additional CD-ROM support (including LUN/jukebox support)
o  HP scanner support
o  1024 bytes/sector support added to ASPIDISK.SYS and AFDISK.EXE
o  Windows based SCSI tutorial
o  Windows on-line catalog of 3rd party companies
o  Windows on-line description of EZ-SCSI files
o  Music database feature added to our Windows CD Play utilities
o  Floptical support added to ASPIDISK.SYS
o  Volume serial ID support added to ASPIDISK.SYS for removable media
o  AHA-1520/1522/1520A/1522A configuration utility (Windows)
o  Wide SCSI support added to ASPIDISK.SYS and AFDISK.EXE (for users of
   the AHA-2740W/2742W)
o  Removable media lock/unlock/eject utility, RMVTOOL.EXE (DOS command
   line utility)
o  VASPID.386 has been rewritten to allow TimerCriticalSection=xxxx to be
   specified in your SYSTEM.INI
o  ASPIBUF.SYS added (see below)


To upgrade to the standard version of Adaptec EZ-SCSI for $29, call Adaptec
at one of the following numbers:

   Software Ordering (U.S.A. and Canada)           (800) 442-7274
   M-F: 5:00am to 6:00pm Pacific Standard Time

   International Software Ordering                 (818) 365-6264
   M-F: 5:00am to 6:00pm Pacific Standard Time

NOTE:  Adaptec EZ-SCSI 3.0 will not be available until March 1, 1994.  Please
do not call before then.  Thank you.


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CD-ROM Drive Support
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The following drives have been tested by Adaptec with Adaptec 
EZ-SCSI 3.0.  All drives support both audio and data.  Photo CD is
supported where indicated:

                                Firm-   
Name            Model           ware    SCSI    Photo CD
----            -----           -----   ----    --------
Compaq          CDU561-31       1.8I    2       multisession
                CDU6611-31      1.8B    2       multisession
Chinon        * CDS 431         H48     1       single-session
                CDS 435         M62     1       single-session
                CDS 535         Q08     2       multisession
Denon         * DRD 253         V       1       single-session
Hitachi         CDR 1750S       12      1       single-session
                CDR 3750        4       1       single-session
                CDR 6750        0005    2       multisession
                CDR 1950S       0005    2       multisession
LMS (Philips) * CM 214          .12     1       single-session
                CM 215          .13     2       multisession
NEC             CDR 38          1       2       multisession
             ** CDR 55JD        1       1       multisession
              * CDR 72          E       1       single-session
                CDR 73          1.2     1       single-session
              * CDR 74          1       1       single-session
                CDR 74          1.0a    1       single-session
                CDR 74-1        1       2       multisession
              * CDR 84          1       1       single-session
                CDR 84          1.0a    1       single-session
                CDR 84-1        1       2       multisession
             ** CDR 210         1.0     1       multisession
                CDR 210P        1.0     1       multisession
                MultiSpin 3X    1.0     2       multisession
                CDR 500         1.0     2       multisession
                CDR 510         1.0     2       multisession
Panasonic/      501 family      1.0B/C  1       single-session
Matsushita      CR 503          1.0A    2       multisession
                CR 532          2.0A    2       multisession
                CR 532          2.5A    2       single-session
                CR 533          1.1a    2       multisession
                LK-MC501S       1       1       single-session
Philips CDD-BK01 / IMS CCD-463  0.00    2       multisession
Pioneer     *** DRM 600         806     1       single-session
            *** DRM 604X        2403    2       multisession
Plextor/Texel   Shinaken 3021   1.04    1       single-session
                Shinaken 5021   1.04    1       single-session
                DM 5021         1.04    1       single-session
                DM 3024         1.10    2       multisession
                DM 5024         1.10    2       multisession
                DM 3028         3.00    2       multisession
                DM 5028         3.00    2       multisession
Sony            CDU 541-01      2.6A    1       single-session
                CDU 561         1.8K    2       multisession
                CDU 561-31      1.8i    2       multisession
                CDU 6211-10     2.6A    1       single-session
TEAC            CD 50           1       2       multisession
Toshiba         XM 3101BME      3232    1       no
                TXM 3201A1      3332    1       single-session
                XM 3301B        272     2       single-session
                XM 3401B        283     2       multisession  
                TM 3301E        2162    2       multisession
                TX 3401B        2       2       multisession

*    These drives do not directly support Photo CD.  However, by adding
     /XAEMUL to the ASPICD.SYS command line, in your CONFIG.SYS, we will
     emulate support for single-session Photo CD on these drives.

**   These drives do not support parity.  Please consult the troubleshooting 
     section of the users manual for information on using these drives.

***  These jukebox CD-ROM drives are fully supported.  A drive letter will
     be assigned for each CD.


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SMARTDRV 5.0 and XA formatted CDs
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SMARTDRV 5.0 (in MS-DOS 6.2, Windows for Workgroups 3.11) now includes
caching for CD-ROM drives.  There is a problem with SMARTDRV in its support
for XA formatted Compact Discs.  If you experience "Not Ready" errors,
using SMARTDRV 5.0, add /E:2048 to your SMARTDRV command line.  For example:

C:\DOS\SMARTDRV /X /E:2048


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ASPIBUF.SYS
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The ISA bus is limited to 24 bits of address.  2^24 = 16 MBytes.  What does
this mean?  It means that an ISA card that uses DMA cannot physically
access memory beyond 16 MBytes of RAM.  This is a limitation of the ISA
bus.

The 16 MByte issue is not a limitation with PCI cards, EISA cards, VL cards,
or PIO cards.  It is only an issue with an ISA card that uses DMA such as
the AHA-1540/1542.  ASPIBUF.SYS is an ASPI double-buffering driver that
you load immediately after ASPI4DOS.SYS (e.g. before ASPICD.SYS, ASPIDISK.SYS,
etc.).  It, along with ASPI4DOS.SYS, must both be loaded low before EMM386
(or QEMM, 386MAX, etc.).  It intercepts ASPI and INT 13h commands and double-
buffers both so that these data transfers occur within the first 16 MBytes
of RAM.  ASPIBUF.SYS is intelligent enough to not double-buffer if the
ASPI or INT 13h buffer is already within the first 16 MBytes of RAM.  It is
only designed to work with ASPIDISK.SYS, ASPICD.SYS, and INT 13h commands.
Other ASPI drivers and/or applications may or may not work.  ASPI FOR
WINDOWS APPLICATIONS (E.G. SHOWSCSI.EXE) WILL BE DISABLED ONCE THIS DRIVER
IS LOADED.

By default, ASPIBUF.SYS will allocate a 16K buffer for double-buffering.  You
can specify the size (2K-64K) by using the size= command line switch.  For
example:

device=c:\scsi\aspibuf.sys /size=8

NOTE:  This driver was not available with previous versions of Adaptec
EZ-SCSI but will still be decompressed to your hard drive when you run
the PATCH program.
