YAMAHA SCSI 2X CDR424 DRIVE

CD-R logo.svg

Yamaha is a large Japanese company and now they are making professional mastering equipment. Now they have a CDR recording drive. The only disc available is made by Taiyo Yuden and they cost $15 each.

CD-R recording systems available in 1990 were similar to the washing machine-sized Meridian CD Publisher, based on the two-piece rack mount Yamaha PDS audio recorder costing $35,000, not including the required external ECC circuitry for data encoding, SCSI hard drive subsystem, and MS-DOS control computer. Now Yamaha has introduced an affordable model for PC systems.

  • SCSI 50-pin interface
  • 2x recording speed
  • 4x read speed
  • Gear CD mastering software

The drive can record at double speed so the PC needs to be able to handle 300KB per second of bandwidth to keep up with the CDR. The new IDE hard disks are fast enough but drives with enough capacity are hard to find. SCSI hard disks are available with enough capacity.

The SCSI interface is 10 megabytes per second so it can handle bus master from the SCSI drive and the CDR easily. The 680MB capacity of the disc needs to be complete for recording. Do not attempt to copy from CDROM to CDR directly as the source is likely to fail to keep up with the destination leading to a buffer underrun.

Nothing in the Red, Yellow or Orange Book standards prohibits disc reading/writing devices from having the capacity to read or write discs beyond the Compact Disc standards. The standards do require discs to meet precise requirements in order to be called Compact Discs, but the other discs may be called by other names; if this were not true, no DVD drive could legally bear the Compact Disc logo. While disc players and drives may have capabilities beyond the standards, enabling them to read and write nonstandard discs, there is no assurance, in the absence of explicit additional manufacturer specifications beyond normal Compact Disc logo certification, that any particular player or drive will perform beyond the standards at all or consistently. 

Early Taiyo Yuden discs tended to not survive long as the dye was not durable enough so they added proprietary chemical additives to make more stable cyanine discs. This allowed the discs to be archive quality.

At present costs are too high for music but many expensive CD-ROM products can now be perfectly copied with the Yamaha drive.

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