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Atari ST family connectors pinouts

• ST power supply
• ST floppy drive 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
• Mega STE/TT030/Falcon Serial ports
• LAN


• ST/Falcon parallel


• ST floppy
• ST Floppy internal
• ST floppy drive IN and OUT
• 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

Pin	Joystick	Mouse
1	Up	XB
2	Down	XA
3	Left	YA
4	Right	YB
5	Reserved
6	Fire	Mouse left button
7	+5V	+5V
8	GND	GND
9	Reserved	Mouse right button