Specifications 6-7
COMPAQ CONFIDENTIAL - NEED TO KNOW REQUIRED
Writer: The Integrity Group Saved by: The Integrity Group Saved date: 10/26/00 11:53 AM
Part Number: 128679-006 File name: Ch06
Table 6-9
Diskette Drive
Diskette Size 3.5 inch
Light On system
Height 0.5 in. / 12.7 mm
Bytes per sector 512
Sectors per track
High Density
Low Density
18 (1.44 MB) / 15 (1.2 MB)
9
Tracks per side
High Density
Low Density
80 (1.44 MB) / 80 (1.2 MB)
80
Read/write heads 2
Average seek times
Track-to-track (high/low)
Average (high/low)
Settling time
Latency average
3 ms / 6 ms
95 ms / 174 ms
15 ms
100 ms
Table 6-10
CD-ROM Drive
Applicable disc CD-ROM (Mode 1, 2, and 3)
CD-XA ready (Mode 2, Form 1 and 2)
CD-I ready (Mode 2, Form 1 and 2)
CD-R (read only)
CD Plus
Photo CD (Single/Multi-session)
CD-Extra
Video CD
CD-WO (fixed packets only)
CD-Bridge
Center hole diameter
.59 in. / 15 mm
Disc diameter
12 cm, 8 cm
Disc thickness
1.2 mm
Track pitch
1.6 µm
Access time
Random
Full stroke
< 150 ms
< 300 ms
Cache buffer 128 KB
Data transfer rate
Sustained, 16X
Variable
Normal PIO mode 4 (single burst)
2400 KB/sec (150 KB/sec at 1X)
1500 to 3600 KB/sec (10X to 24X)
16.66 MB/sec
Start-up time < 8 seconds
Stop time < 4 seconds
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