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MSX External Diskdrive

25 PIN D-SUB FEMALE (At the Computer)

25 PIN D-SUB FEMALE at the Computer.

Pin Name Dir Description
1 +12V --> +12 VDC
2 +5V --> +5 VDC
3 +5V --> +5 VDC
4 /INDEX <-- Sector hole passed sensor.
5 /DSEL1 --> Drive Select 1
6 DIR --> Direction (0=In, 1=Dir)
7 /STEP --> Moves head 1 step in DIR direction.
8 WRITEDATA --> Write Data
9 /WRITEGATE --> Write Gate
10 /TRACK00 <-- Head is over Track 00 (outermost track)
11 /WRITEPROTECT <-- Write protected disk (0=Write protected)
12 READDATA <-- Data read from diskette.
13 /SIDESELECT --> Side Select (0=Side 1, 1=Side 0)
14 +12V --> +12 VDC
15 +12V --> +12 VDC
16 +5V --> +5 VDC
17 /DSEL1 --> Select Drive 0
18 /MOTOR --> Motor On
19 READY <-- Ready
20 GND --- Ground
21 GND --- Ground
22 GND --- Ground
23 GND --- Ground
24 GND --- Ground
25 GND --- Ground
Note: Direction is Computer relative Diskdrive.


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