Cd-Rom Reader Specifications - NEC POWERMATE V Service Manual

Appendix D

CD-ROM Reader Specifications

and Jumper Settings
This appendix provides specifications and jumper settings for the IDE CD-ROM readers
used in the PowerMate V Series multimedia configurations. Table 1-1 and Table 1-2 in
Section 1 identifies the configurations using the quad-speed CD-ROM reader.
All CD-ROM readers come pre-installed in the top 5 1/4-inch accessible device slot. The
reader is connected to the secondary PCI/IDE connector on the system board via an I/O
cable. An audio cable connects the reader to the sound system. The reader is assigned as
drive E.
See Section 2 for information on the CD-ROM reader's controls and indicators. NEC part
numbers for the hard drives are provided in Sections 5 and 6 Desktop and Minitower
Repair.
CD-ROM READER SPECIFICATIONS
The first release of the PowerMate V multimedia configurations shipped with the Toshiba
quad-speed IDE CD-ROM reader. The second release shipped with the GoldStar six-speed
CD-ROM reader. These fast CD-ROM readers allows the user to obtain data faster and to
see smoother animation and video. Table D-1 lists the specifications for the both CD-ROM
readers.
Feature
Performance
Data Transfer Rate
Burst Transfer Rate
Average Access Time
6Memory Buffer
Table D-1 CD-ROM Reader Specifications
Quad-Speed Specification
600 KB/sec (Mode 1)
684 KB/sec (Mode 2)
8.3 MB/sec maximum
(PIO Mode 2)
Seek Time, 150 ms
Full Stroke Access 340 ms
256 KB
Six-Speed Specification
900 KB/sec
11.11 MB/sec (PIO Mode 3)
13.3 MB/sec (DMA Mode 1)
130 ms (average)
Full Stroke Access 330 ms
256 KB