Atari 400 Field Service Manual

Keyboard
Connection
Chart
PIN
CONNECTOR
NUMBERS
NUMBERS
400/Z102
40Q/J105
300/Z103
8Q0/J106
14
1
Z
13
4
13
12
5
-15
!
-7
-22
-30
-44
-23
-SO
10
—
9
1.
-24
I
-21
1-37
-36
^T
11
Q
AlOl
—
6
-5
-20
-38
-35
.51
h49
•10
-L
—
4
•23
J-
-2S
1_
-39
-34
-52
-4a
12
13
13
-11
J-
-12
L.
-3
-27
-19
-40
-33
-53
-47
-la
-41
-32
-54
-46
J-
-13
M4
-I L-
-28 -29
L.
•17
-42
-31
L
-55
-45
-16
-43
CONNECTOR
NUMBERS
14
13
16
14
13
17
12
400/J103
800/J106
400/21
01
aoo/zi04
PIN
NUMBERS
Legend
I. ESC
13. anuc
29.
ssnon
43.
CAPS
LOWa
2.
I
1
i<
CU
SCI
30. C8ZL
44.
SHIFT
3.
2
17.
q
31. A
45.
Z
4.
3
13. H
32. S
46.
X
5.
9
4
19,
E
33.
47.
G
6.
5
20. B
34.
F
4a.
V
7.
6
21. T
33. G
49.
B
a.
/
7
22.
f
36.
H
50.
W
9.
3
23. U
37. J
51. H
10,
(
9
24. I
33. K
52.
•
n.
)
25.
39. L
53.
3
12.
<
26. P
40.
1
1
54.
/
13.
IHSERT
27.
f,-
41,
55.
/l\
14.
DKLEJZ
BACK
S
23,
*
,
>
42.
*
j
36.
SHIFT
57
. SPACE
BAS
ATARI
Home
Computer
5-38

Atari 400 Specifications

General

Manufacturer	Atari
Model	400
Type	Home Computer
Release Year	1979
CPU	MOS Technology 6502
CPU Speed	1.79 MHz
ROM	10 KB
Operating System	Atari OS
Keyboard	Membrane keyboard
RAM	8 KB (expandable to 48 KB)
Graphics	ANTIC and GTIA chips
Sound	4 channels
Display	RF output for connection to TV
Storage	Optional cassette tape drive or floppy disk drive
Ports	Cartridge
Display Resolution	320x192 (16 colors)