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1-24 Service Guide
1.4.18 FDD
Table 1-26 FDD Specifications
Item Specification
Vendor & model name Mitsumi D353F2
Floppy Disk Specifications
Media recognition 2DD (720K) 2HD (1.2M, 3-mode) 2HD (1.44M)
Sectors / track 9 15 18
Tracks 80 80 80
Data transfer rate (Kbits/s) 250 300 500 500
Rotational speed (RPM) 300 360 360 300
Read/write heads 2
Encoding method MFM
Power Requirement
Input Voltage (V) +5 ± 10%
1.4.19 HDD
Table 1-27 HDD Specifications
Item Specification
Vendor & Model Name IBM DMCA21080 IBM DMCA21440 IBM DTNA22160 Toshiba
MK1002MAV
Drive Format
Capacity (MB) 1080 1440 2160 1085
Bytes per sector
512 512
512 512
Logical heads
16 16
16 16
Logical sectors
63 63
63 63
Logical cylinders 2100 2800 4200 2100
Physical read/write heads 3
4
6 6
Disks
2 2
3 3
Spindle speed (RPM) 4009 4009 4000 4635
Performance Specifications
Buffer size (KB) 128 96 96 128
Interface ATA-3 ATA-3 ATA-3 ATA-3
Data transfer rate
(disk-buffer, Mbytes/s)
39.5 ~ 61.8 39.5 ~ 61.8 39.1~ 61.6 29.3 ~ 55.5