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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
• Falcon Serial
• 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 MEGA ST/MEGA STE/TT030 external keyboard

RJ12 Female at computer side

1	+5V DC
2	+5V DC
3	Transmit Data
4	Receive Data
5	GND
6	GND

Internal keyboard header in Falcon030/1040STE/1040STF(M)

10	*	KROK	only Falcon030
9	*	KTOK	only Falcon030
8	*	Ground
7	*	XRESET
6	*	TXD
5	*	RXD
4	*	+5V
3	*	Floppy/HDD LED
2	o	key - not connected
1	*	Ground