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Thread: Philips CM100 the first CD-ROM found :-)

  1. #21

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    It most likely is. The LMSI interface was probably carried forward through the years.

    Someone with the skills could probably build a CM 260 replica. The CM 260 has more integrated logic than the CM 153.

    The main chip on all later controller and sound cards is this one:

    NCR
    @DIGBIE LMS
    97644845-00
    0390471
    F851480 N9205

    It turns out someone connected an external Philips CD-ROM to a CT1780 so it is possible:
    http://www.vcfed.org/forum/showthrea...age2&styleid=3

    Based on some searches it appears there have been PCBs that are not sound cards or LMSI cards that have this chip set.

    The NCR chip is also still available with resellers apparently.
    Last edited by PeterNC; September 19th, 2018 at 12:20 PM.

  2. #22

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    Thanks Roland and Peter.

    The CD-ROM drive inside the CM121 is CM201.









    As you can see, this CD-ROM come with a famous Philips DAC chip TDA1541A.

  3. #23

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    Very nice,

    That whole thing breaths Philips btw... The way how that PCB is made
    is very Philips like. Even if you wiped off all the brands of the components
    you can recognise it immediately. I've repaired consumer electronics for many years.
    And in that time the main brand in the Netherlands was -of course- Philips.

    From that 16 pin header a cable goes directly to that 15 pin D-connector?
    If you make a copy of that you could probably use it in a PC with that other
    controller mentioned here... Very nice to see this drive...

    Regards, Roland
    WTB: RX8E / M8357 and Case for Altair 8800

  4. #24

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    Cool. Many models may have a CM 201 with a bridge to SCSI for example.

    The CM 206 was shipped with OEM PCs. Examples:
    Tandy MMPC
    Compaq CDS (http://cgi.ebay.com/192668573167)
    Gateway 2000
    Last edited by PeterNC; September 24th, 2018 at 05:38 AM.

  5. #25

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    I still have a Media Vision Pro Audio Spectrum 16 that came with a SCSI CDROM. The CDROM is probably Matsushita/Panasonic, not Phillips.

  6. #26

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    There were quite a few standards for CD-ROM in the beginning:

    - Sony (CDU-33A are pretty common)
    - Panasonic/Matsushita (CR-563B are common)
    - Mitsumi (not standard IDE/PATA)
    - LMSI/Philips
    - SCSI of course

    Different OEMs shipped their PCs with the above as they saw fit.
    Last edited by PeterNC; September 24th, 2018 at 03:49 PM.

  7. #27

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    Quote Originally Posted by mediasponge View Post
    I still have a Media Vision Pro Audio Spectrum 16 that came with a SCSI CDROM. The CDROM is probably Matsushita/Panasonic, not Philips.
    Actually, I rechecked that and it is made by Philips in the Netherlands!

  8. #28

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    Cool. Can you let me know the model # so I can update my blog and the LMSI Wikipedia page? Thank you.

  9. #29

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    Quote Originally Posted by PeterNC View Post
    Cool. Can you let me know the model # so I can update my blog and the LMSI Wikipedia page? Thank you.
    Now, I'm not so sure of the "provenance" of that Philips CDROM drive. I came across another SCSI CDROM that is MediaVision branded, but it appears to be made by Sanyo. The Philips CDROM might have come out of a Mac G3 Blue-and-White. I pulled the SCSI out of the Mac in favor of a larger IDE drive. The Philips label is attached.

    20180926_194210.sm1.jpg

  10. #30

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    Thank you. I updated Wikipedia accordingly. The CDD 2600 was also sold in an external housing.

    https://www.worthpoint.com/worthoped...rive-111332523

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