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3 Interface Devices and Mass-Storage Drives
Mass-Storage Drives
CD-ROM Drives
Most models have a 24✕ Max IDE CD-ROM drive supplied in a 5.25-inch
front-access shelf ATAPI, supporting ATAPI commands and with audio
playback capability. It can play any standard CD-Audio discs, in addition to
CD-ROM discs, conforming to optical and mechanical standards as specified
in the Red and Yellow Book.
Features of the
Panasonic CD-ROM
(CD-585-B)
• Application Disc type (confirmed by Red, Yellow, Green, Orange Book).
• CD-ROM data disc (Mode 1 and Mode 2).
• Photo-CD Multisession.
• CD Audio disc.
• Mixed mode CD-ROM disc (data and audio).
• CD-ROM XA, CD-I, CD-Extra, CD-R, CD-RW.
If a disk is still in the drive after power failure or drive failure, the disk can
be reclaimed by inserting a stout wire, such as the end of a straightened
paper-clip, into the small hole at the bottom of the door.
1.
CAV = Constant Angular Velocity
2.
It is assumed that raw error rate of the disc is 10-3 in the worst case.
This excludes “retries”.
3.
Photo-CD (Multisession) is not applicable.
Description
HP product number D4383A
Disc Diameter 120 mm
Data Block Size 2,048 bytes (Mode-1)
2,336 bytes (Mode-2)
Storage Capacity 650 Mbytes (Mode-1)
742 Mbytes (Mode-2)
Read Mode Full CAV
1
10.3X to 24X
Burst Transfer Rate PIO mode 4 - 16.6 Mbytes/s maximum
Single Word DMA Mode 2 - 8.3 Mbytes/s maximum
Multi Word DMA Mode 2 - 16.6 Mbytes/s maximum.
Access Time Average Stroke (1 / 3) 90 ms
Full Stroke 150 ms
Data Error Rate Less than 10-12 (Mode-1)
Less than 10-9 (Mode-2)
2
Spin Up Time From standby mode. Typical 6s to drive ready mode
With tray loading. Typical 8.5s to drive ready mode.
3
Buffer Memory Size 128 kbytes