AICSYS SBC-6504, User Manual

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SBC-6504 User Manual
2.8 Floppy Interface
The board provides a 34-pin header type connector, FDD1, supporting up to two
floppy drives. The floppy drives may be any one of the following types: 5.25"
360KB/1.2MB and 3.5" 720KB/1.44MB/2.88MB.
Pin Signal Pin Signal Pin Signal
1 GND 2 Drive Density Select 3 GND
4 No connector 5 GND 6 No connector
7 GND 8 Index# 9 GND
10 Motor enable A# 11 GND 12 No connector
13 GND 14 Drive select A# 15 GND
16 No connector 17 GND 18 Direction#
19 GND 20 STEP# 21 GND
22 Write data# 23 GND 24 Write gate#
25 GND 26 Track 0 # 27 GND
28 Write protect# 29 No connector 30 Read data#
31 GND 32 Head selection# 33 No connector
34 Disk change#
1
34
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