Laser Magnetic Storage International

Former subsidiary of Philips From Wikipedia, the free encyclopedia

Laser Magnetic Storage International (LMSI) was a subsidiary of Philips that designed and manufactured optical and magnetic media.[3] It began as a joint venture between Philips and Control Data Corporation.[4] It later became Philips LMS.[5]

Company typeSubsidiary
IndustryData storage
FoundedApril 1986; 40 years ago (1986-04) in Mississauga, Ontario[1][2]
DefunctJuly 1992 (1992-07)
Quick facts Company type, Industry ...
Laser Magnetic Storage International
Company typeSubsidiary
IndustryData storage
FoundedApril 1986; 40 years ago (1986-04) in Mississauga, Ontario[1][2]
DefunctJuly 1992 (1992-07)
FateReorganized
SuccessorPhilips LMS
ProductsOptical and magnetic media
Parent
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Products

LMSI built the Philips CM 100, the world's first CD-ROM drive (pictured).

LMSI developed a proprietary CD-ROM interface. Early iterations relied on many 7400-series 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 on the CM 260 for example.

External CD-ROMs, LMSI interface
  • CDD 401: 1× speed (rebranded CM 221)[6][7]
  • CDD 461: 1× speed[8]
  • CDD 462: 1× speed (same as CDD 461 but with multi-session support)[9]
  • CM 50: 1× speed
  • CM 100: 1× speed[10][11] – the world's first CD-ROM drive[12]
  • CM 121: 1× speed
  • CM 221: 1× speed
  • CM 225: ?× speed[13]
External CD-ROMs, SCSI interface
  • CDD 521: 2× speed[14]
  • CDD 522: 2× speed[15]
  • CDD 552: ?× speed[16]
  • CDD 2000: 4× speed[17]
  • CDD 2600: 6× read, 2x write[18]
  • CM 110: ?× speed[19]
  • CM 231: 1× speed[3]
  • CM 234: ?× speed[9]
Internal CD-ROMs, LMSI interface
Internal CD-ROMs, SCSI interface
Internal CD-ROMs, IDE interface
  • CDD 3610: 6× speed
  • CDD 3801: 32× speed
  • CDD 4201: ?× speed
  • CDD 4401: ?× speed
  • CDD 4801: ?× speed
  • CM 202: 2× speed[24][25]
  • CM 207: ?× speed[26]
  • CM 208: ?× speed
  • CM 218: ?× speed
ISA LMSI controller cards
  • CM153 3D Rendering
    LMSI CM 153, ISA CD-ROM interface board
    CM 153: 8-bit ISA (coupled with the CM 100 and the CM 201)[27][28]
  • CM 155: 8-bit ISA (coupled with the CM 100, the CM 201 and the CM 210)[29][11]
  • CM 50 interface: 8-bit ISA (coupled with the CM 50)[30]
  • CM 250: 8-bit ISA (coupled with the CM 205)[31][27]
  • CM 260: 16-bit ISA (coupled with the CM 206)[32][27]
Motherboard-integrated
  • Certain Tandy Sensation models featured a LMSI controller PCB connected to the motherboard.[33]
  • The proprietary 16-pin 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 DB-15 connector for external LMSI devices (the DB-15 on sound cards is the game port/UART MPU-401):
  • Magnetic products were geared towards corporate mini computer environments (like the IBM AS/400):[34]
    • LD 510: internal SCSI MO drive
    • LD 520: external MO drive
    • LD 1200: external WORM drive[27]
    • LD 4100: cartridge optical storage[35]
    • LD 6100: external WORM drive
    • LF 4500: cartridge optical storage[35]

References

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