Apple IIe I/O Slot

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Apple II - 50 pin female bus connector Apple II - 50 pin female bus connector

Expansion Slot Connector for the Apple II Series Interface/Add On Cards.

Pin Name Direction Description
1 GND -
2 DMA IN IN
3 INT IN IN
4 /NMI -
5 /IRQ -
6 /RES -
7 /INH -
8 -12V -
9 -5V -
10 NC -
11 7M -
12 Q3 -
13 CLK1 - Clock 1
14 USER 1 -
15 CLK0 OUT Clock 0
16 /DEVSEL OUT low means port is active
17 D7 IN/OUT Data Lines
18 D6 IN/OUT
19 D5 IN/OUT
20 D4 IN/OUT
21 D3 IN/OUT
22 D2 IN/OUT
23 D1 IN/OUT
24 D0 IN/OUT
25 +12V OUT
26 +5V OUT
27 DMA OUT OUT
28 INT OUT OUT
29 /DMA -
30 RDY -
31 /STROBE -
32 NC -
33 R/W OUT high:Reading Data+Add. low:Writing Data+Add.
34 A15 IN/OUT Address Lines
35 A14 IN/OUT
36 A13 IN/OUT
37 A12 IN/OUT
38 A11 IN/OUT
39 A10 IN/OUT
40 A9 IN/OUT
41 A8 IN/OUT
42 A7 IN/OUT
43 A6 IN/OUT
44 A5 IN/OUT
45 A4 IN/OUT
46 A3 IN/OUT
47 A2 IN/OUT
48 A1 IN/OUT
49 A0 IN/OUT
50 I/O SEL -

References

Category:Buses Connectors

 

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