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APPENDIX M
ATARI XF551 DISK DRIVE
SPECIFICATIONS
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6507 Microprocessor
Control Logic
Diskette Format
Data Storage
Dimensions
Height
Dual-density, single-sided, 5 114
inch
diskette
127K
Width
Length
Weight
Input Voltage
Power
Consumption
Standby
Operation
Start Up
Temperature
Operating
Storage
Relative Humidity
Operating
Storage
Altitude
Number of
Tracks:
Number
of Sectors
per Track
Total
Number
01
Sectors
Number of Sectors
available to
DOS
DOS Overhead,
in
Sectors
Numbers 01 Sectors
Usable
for
File
Storage
Number of
Bytes
per
Physical Sector
Number
of
Bytes
of Overhead
per logical Sector
Number of
Usable Bytes
of
File Storage per Drive
Encoding Method
Transfer
Rate
Access
Time
Track to Track (maximum)
Motor
Start
(maximum)
2.75 in.
(70 mm)
7.25
in.
(180
mm)
11
.50
in. (290 mm)
6 lb.
(2.7
Kg)
8.52
Volts AC
±
12%
@
60
±
3Hz
15 Watts
30 Watts
so Watts
75.6-129.6F
21 .6-165.6F
20%-80%
5%-95%
0-9842.5 feet
Dual
Den
sity
40
26
1,040
1,023
13
1,010
"8
3
126,250
MFM
25O.000BPS
40MS
l000MS
Single
Den sit
y
Ram
Dfsk
40
NfA
18
NfA
720
512
719
511
12
"
707
499
128
128
3
3
88,375
62,375
FM
125.000 BPS
40MS
1000 MS
141
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