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Atari 8-bit Cartridge

A  B  C  D  E  F  H  J  K  L  M  N  P  R  S
o  o  o  o  o  o  o  o  o  o  o  o  o  o  o
o  o  o  o  o  o  o  o  o  o  o  o  o  o  o
1                                         15

Pin Name Description
1 ~S4 Chip Select ($8000 to $9FFF)
2 A3 CPU Address bus line 3
3 A2 CPU Address bus line 2
4 A1 CPU Address bus line 1
5 A0 CPU Address bus line 0
6 D4 CPU Data bus line 4
7 D5 CPU Data bus line 5
8 D2 CPU Data bus line 2
9 D1 CPU Data bus line 1
10 D0 CPU Data bus line 0
11 D6 CPU Data bus line 6
12 ~S5 Chip Select ($A000 to $BFFF)
13 +5V +5 VDC
14 RD5 ROM present ($A000 to $BFFF)
15 ~CCTL Cartridge control select
A RD4 ROM present ($8000 to $9FFF)
B GND Ground
C A4 CPU Address bus line 4
D A5 CPU Address bus line 5
E A6 CPU Address bus line 6
F A7 CPU Address bus line 7
H A8 CPU Address bus line 8
J A9 CPU Address bus line 9
K A12 CPU Address bus line 12
L D3 CPU Data bus line 3
M D7 CPU Data bus line 7
N A11 CPU Address bus line 11
P A10 CPU Address bus line 10
R R/~W CPU read/write
S B02,Phi2 CPU Phase 2 clock

Note: ~ = Active low.

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