Atari Parallel Bus Interface

From HwB

PBI = Parallel Bus Interface

Available on Atari 600XL & 800XL.

Pinout 

1                                                                       49
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  o  o  o  o  o  o  o  o  o  o  o  o  o  o  o  o  o  o  o  o
2                                                                       50
Pin Name Description
1 GND Ground
2 ~EXTSEL External Select
3 A0 CPU Address bus line 0
4 A1 CPU Address bus line 1
5 A2 CPU Address bus line 2
6 A3 CPU Address bus line 3
7 A4 CPU Address bus line 4
8 A5 CPU Address bus line 5
9 A6 CPU Address bus line 6
10 GND Ground
11 A7 CPU Address bus line 7
12 A8 CPU Address bus line 8
13 A9 CPU Address bus line 9
14 A10 CPU Address bus line 10
15 A11 CPU Address bus line 11
16 A12 CPU Address bus line 12
17 A13 CPU Address bus line 13
18 A14 CPU Address bus line 14
19 GND Ground
20 A15 CPU Address bus line
21 D0 CPU Data bus line 0
22 D1 CPU Data bus line 1
23 D2 CPU Data bus line 2
24 D3 CPU Data bus line 3
25 D4 CPU Data bus line 4
26 D5 CPU Data bus line 5
27 D6 CPU Data bus line 6
28 D7 CPU Data bus line 7
29 GND Ground
30 GND Ground
31 B02,Phi2 CPU Phase 2 clock
32 GND Ground
33 NC Reserved
34 ~RST Reset output
35 ~IRQ Interrupt request
36 ~RDY Ready input
37 NC Reserved
38 ~EXTENB CPU External Enable
39 NC Reserved
40 ~REF Refresh cycle
41 ~CAS Column Address Strobe
42 GND Ground
43 ~MPD Math Pack (FP) Disable
44 ~RAS Row Address Strobe
45 GND Ground
46 LR/~W Latched read/write
47 +5V +5 VDC (only 600XL. Not connected on 800XL)
48 +5V +5 VDC (only 600XL. Not connected on 800XL)
49 AUDIO Audio input
50 GND Ground

Note: ~ = Active low.

Contributions

Sources

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