ProStar 9400 CD-ROM (Philips/ESS688?)

ProStar 9400 CD-ROM (Philips/ESS688?)

Post by Brian T. Schellenberg » Sun, 02 Apr 1995 04:00:00

I have a ProStar 9400 laptop.  I've got Linux & X up on it, and I'm
having fun.  But I can't get it to talk the built-in CD-ROM.  It is
a Philips CD-ROM, the DOS driver is written by Microsoft, and the
tech support rep says the controller chip is an ESS688, whatever that

I've tried the kernel patches for the 206 contoller (it's a double-speed
drive, so it can't be the 205 controller, though I *think* I tried that
one anyway), and I've also tried accessing it as hdb, hdc, and hdd by
forcing the kernel to think that each of those was a cdrom during boot
time, but none of this has worked.

I'm running the 1.2 kernel, with no patches (other than the 206 patches,
which I no longer have configured in anyway).

If anybody has any ideas, or at least can tell me where to start or how
to properly word the question about the CD-ROM (I suspect I did not get
the right question answered above), I'd be most appreciative.


"Someone's got to be the one at the head of the line to be first see the
 missing head, but I'm not in any rush to head the line and so the line
 has a missing head." -- THEY MIGHT BE GIANTS ("Mrs.  Train.")


1. ProStar 9400: LMS/Phillips CDROM driver

[Peronal replies appreciated.  I will summarize to the group.]

I have a ProStar 9400 computer.  It has a builtin doublespeed CD-ROM
drive.  What I know about it is:

  - The DOS driver says that is is an "LMS/Philips" driver.
  - Somebody at ProStar tech support claimed that the CDROM chip
    driver was the "ESS688."
  - This is in fact the sound chip, as smebody from here mentioned
    when I posted once before.
  - Regardless of that, unless the driver chip is builtin to the
    CDROM itself, that's the only chip that *appears* to be tightly
    coupled to the CD player when I look inside, so I think that this
    information might, in fact, be correct.
  - I've requested detailed info on the CD-ROM driver from ProStar,
    but they have not sent it.  (They haven't exactly refused; I thought
    they'd agreed twice, but I failed to really nail them down, and it's
    never showed up.)
  - I've tried telling the kernel at startup to try the CDROM as an
    IDE drive at all possible locations; I've tried multiple Philips
    drivers I've gotten off the net; and for good measure I tried
    every single CDROM drive on the Slackware distribution (from last
    December, I admit).
  - I'm getting really tired of accessing the CDROM by rebooting
    under DOS and copying to the harddrive.

Does anybody have any information or pointers on this drive and how I
might access it?

I asked this on the development.system group, so please look there
for details, but:
  - is it possible somehow to make use of the DOS driver under Linux?
  [Please no flames on why this is a stupid idea, or at least not
   until you read my article in comp.os.linux.development.system
   called "Working from or using DOS drivers under Linux".]

  Brian, the Man from Babble-on.           \  Brian T. Schellenberger /

  "Every jumbled pile of person  has a       \     R2266   x7783    /
   thinking part that wonders what the part   ----------------------
   that isn't thinking isn't thinking of."  -- THEY MIGHT BE GIANTS

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