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Atari ST family connectors pinouts

• ST power supply
• ST floppy power supply


• ST Monitor out
• TT Monitor out
• Falcon Monitor out


• ST joystick / mouse
• STe enhanced joystick
• MEGA ST/TT keyboard


• MIDI In and Out
• ST Modem 1
• Falcon Serial
• LAN


• ST/Falcon parallel


• ST floppy
• Floppy internal
• ST/TT DMA ACSI port
• TT SCSI port


• ROM port


• Falcon DSP port

Atari ST joystick / mouse

Canon D-sub 9 male at computer side

1	Forward	XB	6	Fire	Mouse left button
2	Backward	XA	7	+5V UCC
3	Left	YA	8	GND
4	Right	YB	9	Reserved	Mouse right button
5	Reserved