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README.OS2
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1993-03-07
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Driver for Philips CM205 CDROM - Wide Beta
This package only contains a limited demo version of programs related
to the Philips CD-ROM adapter CM250. The programs will only work up
to April, 30th 1993. If you do not agree with this limitation, now
select EXIT from the INSTALL-menu!
A full featured version is available from
V.C.S
Forststraße 53
W7000 Stuttgart 1
Germany
Tel.:(+49)711-621832
Fax.:(+49)711-621843
Installation
This install program is designed to be on a diskette drive in the
"\"-directory. Have at least the file OS2DRVR on a diskette.
If your OS/2 is not installed completely, it is possible that several
drivers needed for CDROM support are missing on your hard disk
drive. The installation program then asks you to insert the disks
containing these files.
This install program works only with OS/2 2.0. Because the CDROM
support has completely changed in OS/2 2.1 other files have to be
installed from other diskettes. For this reason the program has to be
changed. We don't know whether the drivers run with final OS/2 2.1 at
all. We tested the drivers with OS/2 2.1 beta 6.479 on CD. See later
section for use with OS/2 2.1 beta 6.479.
If your CDROM install diskette is another format as your OS/2 install
disks, install the CDROM drivers for CM205 first, then abort when an
OS/2 diskette is requested and select "Install/Driver" again from the
menu and choose the other drive in the "Options" dialog.
Don't forget to change the CONFIG.SYS no matter whether by
"Install/Config" or manually.
Installation of OS/2 2.1 Beta 6.479
Read the installation instruction in the small booklet coming with
the CD carefully. Create the installation diskettes from an OS/2
or DOS command prompt as described in the booklet. Now follow the
instructions describing how to install os/2 2.1 beta on non-supported
SCSI Adapters:
Copy the driver CM250.ADD or CM250I.ADD from your \OS2 directory to
the disk 1 into the \ directory. Append the line in your CONFIG.SYS
dealing with the CM250.ADD or CM250I.ADD to the end of CONFIG.SYS on
the disk 1. This line may look like
basedev = CM250.ADD /P:nnn
or
basedev = CM250I.ADD /P:nnn /I:q
where nnn is the port address (300, 310, 330 or 340) and q is the IRQ
numer (3, 4, 5 or 6) selected on the CM250 adapter. Do *NEVER* supply
a path to basedev lines !!
After installation of OS/2 2.1 beta 6.479 on your hard disk copy the
CM250.ADD or CM250I.ADD to the \OS2 directory of your hard disk and
append the "basedev" line at the end of CONFIG.SYS of your had disk
too.
If you use OS/2 2.0 and the CM250 driver not yet installed, install
the driver first. If you have only DOS installed, insert the driver
diskette in your diskette drive, the OS/2 2.1 beta CD in the CD drive
and change to an empty directory on your hard disk. Now enter:
E:\OS2SE21\DISK_2\UNPACK A:\OS2DRVR
(assumed your CD is E: and the driver diskette is in A:). The CM250
device drivers and PLAY.EXE are then unpacked to your current
directory. Proceed then as described above and don't forget to append
the correct "basedev" statement to the CONFIG.SYS.
The above mentioned OS/2 2.1 beta CD is sent to selected beta testers
by IBM (eg. to DAP members). Do not ask us for this CD.
BUGS
This driver should not have bugs, but, like other software products
there could be problems. We did some kind of beta test before release
of this driver and discovered some problems in this phase. If your
system produces any kind of TRAP in the modules CM250$ or OS2SCSI$
while booting or CD access, write down the numbers shown on the
screen and report with a short description of your system (CPU type,
amount of RAM, type of hard disk) to us.
There are a lot of OS/2 2.0 WPS problems left in GA (empty unnamed
folders after CD change, lines without folders at the end, missing
"+" signs, CD drive shown as a diskette drive after bootup without CD
inserted). We could produce this problems also with SCSI drives made
by IBM. Not CUA-like implementations (MOVE from CDROM to disk is
possible, though there is nothing deleted on the CDROM) are also done
in the WPS not in the driver (Driver reports ERROR on write access).
HINT
We discovered during our intensive tests that all CDs inserted in the
CM205 had a tiny circular scratch with about 8cm (3inch) in diameter.
We found out that the CD still rotates when we opened the drawer and
pulled it out quickly. To avoid the rotation of the disk on the
drawer leading to this tiny scratch wait about two seconds between
pressing the drawer in and pulling it out.