Commodore 1581 - Appendix E: Specifications of the 1581 Disk Drive

APPENDIX E
SPECIFICATIONS OF THE 1581 DISK DRIVE
STORAGE
Total unformatted capacity 1 Megabyte
Total formatted capacity 808,960 bytes
Maximum Sequential file size 802,640 bytes
Maximum Relative file size ~ 800K
Records per file 65535
Files per diskette 296
Cylinders per diskette 80
Logical sectors per cylinder 40 (0-39)
Physical sectors per cylinder 20 (1-20)
Free blocks per disk 3160
Logical bytes per sector 256
Physical bytes per sector 512
INTEGRATED CIRCUIT CHIPS USED
6502A microprocessor
8520A I/O
23256 32K bytes ROM
4364 8K bytes RAM
WD177X Floppy Disk Controller
PHYSICAL DIMENSIONS
Height
Width
Depth
Weight
ELECTRICAL REQUIREMENTS
Voltage
Frequency
Power used
North America
Europe/Australia
North America
Europe/Australia
63 mm
140 mm
230 mm
14 kg
100-120 VAC
220-240 VAC
60 Hz
50 Hz
10 Watts
MEDIA
Any good quality 3.5 inch double-sided diskette may be used.
125