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Comments on "Device Driver & Utilities Ver. 1.9
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1) Applicable model list:

* The utilities in this diskette are applicable to the following models.

1. CDU50E
2. CDU55D
3. CDU55E
4. CDU75E
5. CDU76E
6. CDU77E
7. CDU17E
8. CDU111
9. CDU311

2) Improvements:

All SONY ATAPI CD-ROM Drives do not operate correctly with a CD-ROM
Performance Test Program (CDT.EXE). SONY device driver 2.26a
returns the error against IOCTL input command (Audio Disc Info)
which is issued at the start of this test program CDT.EXE.
Device driver 2.27a is changed not to return the error against
the first IOCTL input command (Audio Disc Info) after media
is changed.

3) Device Driver information

* To find out the version level of the device driver you are using, there
are mainly two ways, which are....

1. Use either debugger or dump software to see an ASCII information in
the device driver where you will be able to find the version level.

2. Or, watch when the device drive is loaded during boot stage of
MS-DOS system.

* However, above method may not be easy for some users, therefore the
following information is added to help our customers identify the
version level of each device driver for our ATAPI CD-ROM drive.
With the information given below, the version level can be identified
based on the file size and the time stamp information.

ATAPI_CD.SYS 22016 94-07-22 16:04 <<=== 2.00a
ATAPI_CD.SYS 22016 94-07-22 16:04 <<=== 2.14a
ATAPI_CD.SYS 24144 94-10-28 20:14 <<=== 2.16a
ATAPI_CD.SYS 26048 94-11-10 12:14 <<=== 2.17d
ATAPI_CD.SYS 26128 94-12-05 19:07 <<=== 2.18b
ATAPI_CD.SYS 26848 95-01-08 20:26 <<=== 2.19c
ATAPI_CD.SYS 26864 95-02-14 11:03 <<=== 2.20a
ATAPI_CD.SYS 28976 95-04-12 13:45 <<=== 2.22a
ATAPI_CD.SYS 29616 95-07-14 09:39 <<=== 2.24a
ATAPI_CD.SYS 30272 95-09-28 16:14 <<=== 2.26a
ATAPI_CD.SYS 30272 96-03-22 16:10 <<=== 2.27a

4) Comments:

* This floppy disk contains an installation software "INSTALL.EXE"
version 1.00a.

* This device driver (ver. is 2.26a) supports "Enhanced CD". However,
this is canceled with option "/h".

* MSCDEX is not included because of licensing agreement with Microsoft.
MSCDEX.EXE is included in DOS 6.x, but also it is possible to
download from Microsoft BBS.

* Please make sure that MSCDEX.EXE exists under "C:\DOS", then execute
"INSTALL.EXE".

* This floppy disk contains the following files

1) Device Driver : ATAPI_CD.SYS 2.27a
2) Install.Exe : INSTALL.EXE 1.00a
3) Utility : EJECT.COM
4) Ditto : LOCK.COM
5) Ditto : UNLOCK.COM
6) Ditto : CDPLAY.EXE
7) Ditto : LOAD.EXE
8) Ditto : README.TXT


5) Installation

After installation using "INSTALL.EXE", the following lines are
added in "Config.sys" and "Autoexec.bat", which are....

< CONFIG.SYS >

Device=C:\DEV\ATAPI_CD.SYS /D:mscd000 /i:0

< AUTOEXEC.BAT >

C:\DOS\MSCDEX.EXE /D:mscd000 /V /M:12


6) Option for the device driver, ATAPI_CD.SYS

a) /D:

* Device driver needs to have a listed on the command
line to MSCDEX following the /D: switch. MSCDEX uses this
parameter to locate device driver. Names used must match those
used for the /D: parameters for each device entry
in "AUTOEXEC.BAT".

* The installation software specify the device name as "mscd000",
which appear in "CONFIG.SYS" as well as "AUTOEXEC.BAT".

b) /I:n

* This option is related "Media Change Command" and "Illegal
disc change" specified in MSCDEX specification. This is required
to notify the system that disc has been changed so that this
information can be used in various ways. For example, initialize
a buffer memory with directory information, etc.

On the other hand, there are several ways in treating this
information. Therefore, we added an option "/i:n" so that
user can choose an appropriate setting.

* No option at all.
Without this option, the drive returns "illegal media change",
if the drive tries to access CD-ROM without disc in the drive,
which will be, in turn, expressed as "Not ready error reading.."
and displayed on the screen.

This will not be cleared once, even after a CD-ROM disc is
inserted, but second retry will clear this message.

* n=0
Our installation software will set this option, because we feel
this is more natural than default setting which is specified by
MSCDEX specification.

Note : Some major SCSI products vendors have this setting as
their default setting.

* n=1
The driver will keep returning "Media Change Status" until
"Media Change Command (A command which is to check if the media
is changed or not) is executed. During this stage, the system
will keep displaying the following message on the screen, even
after a media is loaded.

Not ready error reading drive X:
Abort, Retry, Ignore?
(* X: Drive letter of CD-ROM drive)

* /i .... Same as "/i:1"



c) /p:XXX
When user specifies one of the following address, like a /p:xxx,
the device driver selects the only specified port address.
Primary /p:1F0
Secondary /p:170
Tertiary /p:1E8
Quaternary /p:168
F.D. board /p:160
(Futuredomain)

However, the F.D. board's address(160H) and Quaternary's
address(168H) can not use together.

Without specifying this option, the device driver can select the
drive by "auto-detect" mode in any of the Primary, Secondary,
Tertiary, Quaternary, and F.D. board.

d) /g
In the case of connecting only Sony drive to the ATA interface of the
Green PC as the master, the device driver returns "Drive not Ready"
for any command from the host computer after the host computer enters
suspend mode.
Option "/g" is added to solve this problem.

e) /h
This option is canceled support of Enhanced CD with this option.


7) Option for MSCDEX.EXE

a) /D:

* Device driver needs to have a listed on the command
line to MSCDEX following the /D: switch. MSCDEX uses this parameter
to locate device driver. Names used must match those used for the
/D: parameters for each device entry in "CONFIG.SYS".

* The installation software specify the device name as "mscd000",
which appear in "CONFIG.SYS" as well as "AUTOEXEC.BAT".

b) /M:
This option switch determines how many sector buffers MSCDEX
allocates when it installs itself. The larger this value is, the
more sector cache entries are available and the less MSCDEX will
have to read directly from the CD-ROM drive. So, please increase
if you require better performance, but it will take system memory
space. It is also possible to reduce the value, but the minimum
of 4-5 is recommended. If this value is too small, the drive will
reread more often which will deteriorates drive's performance.

c) /V
This is "verbose switch". /V asks MSCDEX to print additional
information about memory usage during initialization. We recommend
to set this switch.

d) Others
There are few other switches which are not set using "INSTALL.EXE".
The following explanations are given for users who need to
customize the CD-ROM system.

* /E
This is an additional switch, which tells MSCDEX to use expanded
memory if it is available.

* /L:
This option is prepared for some software that require a specific
drive letter for the CD-ROM drive so that the application
software can treat CD-ROM drive without any problem.
Because "INSTALL.EXE" does not set this switch, you will have to
edit your AUTOEXEC.BAT file if this switch is needed.
For example, the following assigns CD-ROM drives starting at
drive letter L:, you need to add switch "L" as you can see as
follow.

MSCDEX /D:MSCD001 /L:L

* /K
The /K switch causes MSCDEX to look for a Supplementary Volume
Descriptor that identifies a shift-JIS Kanji volume for Japanese.

* /S
The /S switch tells MSCDEX to patch MS-DOS to allow sharing of
CD-ROM drives on MS-NET based servers.


* Note: MSCDEX is a product of Microsoft Corporation




Personal Storage Products Dept. No.1
Computer Peripherals & Components Company
Sony Corporation

As of May 21, 1996

  Filename Size Readme O.S. Description
zip cdu17e.zip 139KB cdu17e.htm This is the ATAPI/DOS drivers for the following Sony CD-ROMs:
CDU17E
CDU50E
CDU55D
CDU55E
, CDU75E
CDU76E
and CDU77E.
zip cdu625x.zip 16KB cdu625x.htm Sony CD-Rom CDU625x Support for Windows 95.
zip sony173a.zip 97KB   These are the DOS and Windows 3.1x drivers for the following Sony CD-Roms
CDU-31A
CDU-33A
zip sony220x.zip 110KB   These are the DOS and Windows 3.x drivers for the following Sony CD-ROMs:
CDU-531
CDU-535
CDU-7205.
Note: The file CHCKLIST.DOC contains technical information on the controller cards that come with these units.
zip sony227b.zip 69KB sony227b.htm This is the ATAPI/DOS driver (v2.27b) for the following Sony CD-ROMs:
CDU50E
CDU55D
CDU55E
CDU75E
CDU76E
CDU77E
CDU111
CDU311
CDU511
CDU571.
zip sony8x.zip 139KB sony8x.htm This is the ATAPI/DOS drivers for the following Sony CD-ROMs:
CDU17E
CDU50E
CDU55D
CDU55E
CDU75E
CDU76E
CDU77E
CDU111
CDU311.
zip sony_ata.zip 70KB   This is the DOS and Windows 3.1x drivers for the following Sony CD-ROMs:
CDU50E
CDU55D
CDU55E
CDU75E
CDU76E
CDU77E

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