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Amiga External Diskdrive

 (at the Amiga)

23 PIN D-SUB FEMALE at the Amiga.

Pin	Name	Dir	Description
1	/RDY		Disk Ready
2	/DKRD		Disk Read Data
3	GND		Ground
4	GND		Ground
5	GND		Ground
6	GND		Ground
7	GND		Ground
8	/MTRXD	OC	Disk Motor Control
9	/SEL2	OC	Select Drive 2
10	/DRES	OC	Disk Reset
11	/CHNG		Disk Removed From Drive-Latched Low
12	+5V		+5 Volts DC (250 mA max)
13	/SIDE		Select Disk Side (0=Upper, 1=Lower)
14	/WPRO		Disk is Write Protected
15	/TKO		Drive Head position over Track 0
16	/DKWE	OC	Disk Write Enable
17	/DKWD	OC	Disk Write Data
18	/STEP	OC	Step the Head-Pulse, First low, then high
19	DIR	OC	Select Head Direction (0=Inner, 1=Outer)
20	/SEL3	OC	Select Drive 3
21	/SEL1	OC	Select Drive 1
22	/INDEX	OC	Disk Index Pulse
23	+12V		+12 Volts DC (160 mA max, 540 mA surge

Note: Direction is Computer relative Diskdrive.

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