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Atari 8bit family connectors pinout

• 8 bit power supply
• 8 bit video out
• Joystick
• SIO
• 8 bit cartridge
• Atari parallel bus
• ECI
• XEGS Keyboard


• Alternative SIO (AKPV)

Atari 8bit parallel bus interface

50 pin slot male at computer side

1	GND		2	/EXTSEL
3	A0		4	A1
5	A2		6	A3
7	A4		8	A5
9	A6		10	GND
11	A7		12	A8
13	A9		14	A10
15	A11		16	A12
17	A13		18	A14
19	GND		20	A15
21	D0		22	D1
23	D2		24	D3
25	D4		26	D5
27	D6		28	D7
29	GND		30	GND
31	PHI2		32	GND
33	not connected		34	/RST
35	/IRQ		36	/RDY
37	not connected		38	EXTENB
39	not connected		40	/REF
41	/CAS		42	GND
43	/MPD		44	/RAS
45	GND		46	R/W
47	not connected (+5V on 600XL)		48	not connected (+5V on 600XL)
49	AUDIO IN		50	GND