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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 Portfolio parallel port (HPC-101)

25 pin canon female at interface side

1	/Strobe	B0	14	Auto LF	B1
2	Data 0	A0	15	/Error	C3
3	Data 1	A1	16	/Init	B2
4	Data 2	A2	17	Select Input	B3
5	Data 3	A3	18	GND
6	Data 4	A4	19	GND
7	Data 5	A5	20	GND
8	Data 6	A6	21	GND
9	Data 7	A7	22	GND
10	/Acknowledge	C5	23	GND
11	Busy	C4	24	GND
12	Paper empty	C0	25	GND
13	Select	C1