Laser Magnetic Storage International


Laser Magnetic Storage International was a subsidiary of Philips that designed and manufactured optical and magnetic media. It began as a joint venture between Philips and Control Data Corporation. It later became Philips LMS.

Products

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
  • CDD 461: 1× speed
  • CDD 462: 1× speed
  • CM 50: 1× speed
  • CM 100: 1× speed – the world's first CD-ROM drive
  • CM 121: 1× speed
  • CM 221: 1× speed
  • CM 225: ?× speed
; External CD-ROMs, SCSI interface:
  • CDD 521: 2× speed
  • CDD 522: 2× speed
  • CDD 552: ?× speed
  • CDD 2000: 4× speed
  • CDD 2600: 6× read, 2x write
  • CM 110: ?× speed
  • CM 231: 1× speed
  • CM 234: ?× speed
; Internal CD-ROMs, LMSI interface:
  • CM 201: 1× speed
  • CM 205: 1× speed
  • CM 206: 2× speed
  • CM 210: ?× speed
; Internal CD-ROMs, SCSI interface:
  • CM 121: 1× speed
  • CM 201: 1× speed
  • CM 204: ?× speed
  • CM 212: ?× speed
  • CM 214: ?× speed
  • PCA80SC: 8× speed
; 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
  • CM 207: ?× speed
  • CM 208: ?× speed
  • CM 218: ?× speed
; ISA LMSI controller cards:
CM 153: 8-bit ISA
  • CM 155: 8-bit ISA
  • CM 50 interface: 8-bit ISA
  • CM 250: 8-bit ISA
  • CM 260: 16-bit ISA
; Motherboard-integrated
  • Certain Tandy Sensation models featured a LMSI controller PCB connected to the motherboard.
  • 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 :
  • * 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 16-bit ISA cards with the Aztech AZTPR16 DSP
  • Magnetic products were geared towards corporate mini computer environments :
  • * LD 510: internal SCSI MO drive
  • * LD 520: external MO drive
  • * LD 1200: external WORM drive
  • * LD 4100: cartridge optical storage
  • * LD 6100: external WORM drive
  • * LF 4500: cartridge optical storage