Atari Connection Machine
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Atari ST family connectors pinouts

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Atari ST external floppy

DIN 14 female

DIN 14 female at computer side
1 RD Read Data
2 SIDE 0 Side 0 Select
3 GND
4 INDEX
5 SEL0 Drive 0 Select
6 SEL1 Drive 1 Select
7 GND
8 MOTOR Motor On
9 DIR Direction In
10 STEP
11 WD Write Data
12 WG Write Gate
13 TRK00 Track 0
14 WP Wtite Protect

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