Laser Magnetic Storage International

Laser Magnetic Storage International (LMSI) was a subsidiary of Philips that designed and manufactured optical and magnetic media.[1] It began as a joint venture between Philips and Control Data Corporation.[2] It later become Philips LMS.

Products

LMSI developed a proprietary CD-ROM interface. Early iterations relied on many Philips chips: on the CM 153 card for example. Later on this bus was based on the highly integrated NCR chip: NCR @DIGBIE LMS 97644845-00 0390471 F851480 N9205: on the CM 260 for example.

External CD-ROMs, LMSI interface:

  • CDD 401: ?X speed.[3][4]
  • CDD 461: 1X speed.[5]
  • CDD 462: ?X speed.[6]
  • CDD 2600: 6X speed.[7]
  • CM 50: ?X speed.
  • CM 100: ?X speed.[8][9]
  • CM 121: ?X speed.
  • CM 225: ?X speed.[10]

External CD-ROMs, SCSI interface:

  • CDD 521: 2X speed.[11]
  • CDD 522: 2X speed.[12]
  • CDD 552: ?X speed.[13]
  • CDD 2000: ?X speed.[14]
  • CDD 2600: 6X speed.[15]
  • CM 110: ?X speed.[16]
  • CM 221: ?X speed.
  • CM 231: ?X speed.[17]
  • CM 234: ?X speed.[6]

Internal CD-ROMs, LMSI interface:

  • CM 201: ?X speed.[18][9]
  • CM 205: 1X speed.
  • CM 206: 2X speed."InfoWorld". 1993-06-14.
  • CM 210: ?X speed.[18][9]

Internal CD-ROMs, SCSI interface:

  • CM 121: ?X speed.[19]
  • CM 201: ?X speed.[20][19]
  • CM 204: ?X speed.[21]
  • CM 212: ?X speed.
  • CM 214: ?X speed.[21][6]
  • PCA80SC: 8X speed.[22]

Internal CD-ROMs, IDE interface:

  • CDD 3610: 6X speed.
  • CDD 3801: 32X speed.
  • CDD 4201: ?X speed.
  • CDD 4401: ?X speed.
  • CDD 4801: ?X speed.
  • CM 202: 2X speed.[23][24]
  • CM 207: ?X speed.[25]
  • CM 208: ?X speed.
  • CM 218: ?X speed.

ISA LMSI Controller Cards:

  • CM 153: 8BIT ISA (coupled with the CM 100 & CM 201).[26]
  • CM 155: ?BIT ISA (coupled with the CM 100, CM 201 & CM 210)[27][9]
  • CM 50 interface: 8BIT ISA (coupled with the CM 50)[28]
  • CM 250: 8BIT ISA (coupled with the CM 205).[29][26]
  • CM 260: 16BIT ISA (coupled with the CM 206).[30][26]

Motherboard Integrated

  • Certain Tandy Sensation models featured a LMSI controller PCB connected to the MOBO.[31]

The proprietary 16PIN LMSI CD-ROM interface was relatively short lived and existed on LMSI interface cards and a few ISA sound cards. These sound cards only have internal LMSI connectors; not the external DB15 connector for external LMSI devices (the DB15 on sound cards is the game port / UART MPU-401):

  • Sound Blaster Pro 2 CT1620
  • Sound Blaster 16 ASP CSP CT1780
  • Media Vision Jazz 16 LMSI
  • Pro Audio Spectrum LMSI
  • Pro Audio 16 LMSI
  • Generic 16BIT ISA PCBs with the AZTECH AZTPR16 DSP, FCC ID 138-MMSN808

Magnetic products were geared towards corporate mini computer environments (like the IBM AS/400).[32]

  • LD 510: internal SCSI MO drive.
  • LD 520: external MO drive.
  • LD 1200: external WORM drive.[33]
  • LD 4100: cartridge optical storage.[34]
  • LD 6100: external WORM drive.
  • LF 4500: cartridge optical storage.[34]

References
  1. Ziff Davis, Inc. (29 October 1991). "PC Mag". PC Magazine: The Independent Guide to IBM-Standard Personal Computing. Ziff Davis, Inc.: 336–. ISSN 0888-8507.
  2. IDG Enterprise (24 August 1987). Computerworld. IDG Enterprise. pp. 61–. ISSN 0010-4841.
  3. http://www.retrocomputing.net/parts/philips/CDD401/
  4. http://fr.1001mags.com/parution/soft-micro/numero-85-mai-1992/page-136-137-texte-integral
  5. http://cgi.ebay.com/162662277973
  6. http://fr.1001mags.com/parution/svm/numero-110-novembre-1993/page-276-277-texte-integral
  7. http://www.vcfed.org/forum/showthread.php?35385-Philips-CM100-the-first-CD-ROM-found-)/page3
  8. "Weird World of Hardware".
  9. http://www.arnoldit.com/articles/book/ManagingBook/Managing4.pdf
  10. "PC Mag". 1992-12-22.
  11. http://www.computinghistory.org.uk/det/44095/Philips-CDD-521-Compact-Disc-Recorder
  12. http://www.dutchaudioclassics.nl/philips_cdd522_cdwriter
  13. http://vintage-audio-laser.com/liste_dac/images/philips/philips_cdd522.html
  14. https://www.recycledgoods.com/philips-cdd2000-scsi-external-cd-r-drive/
  15. https://www.worthpoint.com/worthopedia/philips-cdd-2600-scsi-external-drive-111332523
  16. http://home.iae.nl/users/pb0aia/cm/sroom.html
  17. "PC Mag". 1991-10-29.
  18. http://fr.1001mags.com/parution/svm/numero-39-mai-1987/page-56-57-texte-integral
  19. http://www.jurpc.de/jurpc/show?id=1990_04_14600&type=pdf
  20. "InfoWorld". 1989-10-23.
  21. "PC Mag". 1991-10-29.
  22. 292760453203
  23. http://www.verycomputer.com/11_5df271ccdde5dd3f_1.htm
  24. http://fr.1001mags.com/parution/svm/numero-92-mars-1992/page-74-75-texte-integral
  25. "Image: Philips CM207 CD-ROM Drive".
  26. http://ibmvaluepoint.blogspot.com/2018/07/philips-magnavox-cd-rom-drives.html#!/2018/07/philips-magnavox-cd-rom-drives.html
  27. https://groups.google.com/forum/m/#!topic/alt.cd-rom/CriS2y3DZz8
  28. http://www.planet3dnow.de/vbulletin/threads/333139-Philips-CM-50-externes-CD-ROM-Laufwerk
  29. "semi-vintage stuff for sale". Vintage Computer Forum.
  30. http://www.retrocomputing.net/parts/philips/CM260/P0023867.JPG
  31. http://www.vcfed.org/forum/showthread.php?66942-Onboard-Scsi-486sx
  32. "Computerworld". 1991-05-20.
  33. http://ibmvaluepoint.blogspot.com/2018/07/philips-magnavox-cd-rom-drives.html
  34. dq=%22Laser+Magnetic+Storage+International%22#v=onepage&q=%22Laser%20Magnetic%20Storage%20International%22&f=false "Computerworld" Check |url= value (help). 1990-06-04.
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