Laser Magnetic Storage International

Laser Magnetic Storage International (LMSI) 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 –  on the CM 260 for example.


 * External CD-ROMs, LMSI interface:
 * CDD 401: 1× speed (rebranded CM 221)
 * CDD 461: 1× speed
 * CDD 462: 1× speed (same as CDD 461 but with multi-session support)
 * CM 50: 1× speed
 * CM 100: 1× speed
 * 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:
 * CM153 LMSI 3D Render.png 153: 8-bit ISA (coupled with the CM 100 and the CM 201)
 * CM 155: 8-bit ISA (coupled with the CM 100, the CM 201 and the CM 210)
 * CM 50 interface: 8-bit ISA (coupled with the CM 50)
 * CM 250: 8-bit ISA (coupled with the CM 205)
 * CM 260: 16-bit ISA (coupled with the CM 206)


 * 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 (the DB-15 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 16-bit ISA cards with the Aztech AZTPR16 DSP (FCC ID 138-MMSN808)
 * Magnetic products were geared towards corporate mini computer environments (like the IBM AS/400):
 * 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