Pinouts of Connectors

Amiga External Diskdrive connector pinout

layout
schematic diagram
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23 pin D-SUB FEMALE connector pin-out & layout
23 pin D-SUB FEMALE connector  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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Pinouts.ru > Pinouts of different diskdrives connectors >  Pinout of Amiga External Diskdrive connector and layout of 23 pin D-SUB FEMALE connector

Source(s): Amiga 4000 User"s Guide from Commodore, from Hardware Book
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