Pokey; Switchbox; Assignments - Atari CX 5200 Field Service Manual

Ground VSS
1
40
D2
Data
Bus
Data Bus D3
2
39
D1
Data Bus
Data
Bus
D4
3
38
DO
Data Bus
Data Bus
D5
4 37
AUDIO
Audio Out
Data
Bus
D6
5
36
A0
Address Bus
Data Bus
D7
6 35
A1
Address Bus
Phase
2
Clock
02
7
34
A2
Address Bus
Pot Scan
P6
8 33
A3
Address Bus
Pot Scan
P7
9
32
R/W
Read/Write
Control
Pot Scan
P4
10
POKEY
31
CSl Chip
Select
Pot Scan
P5
11
30
c5o
ChiD
Select
Pot Scan
P2
12
29
IRQ
InterruDt
Request
Pot
Scan P3
13 28
SOD
Serial
Output Data
Pot Scan
P0
14
27
OCLK
Serial
Output Clock
Pot Scan PI
15 26
BCLK
Bidirectional
Clock
Softfire
KR2
16 25
KR1
Keyboard Bead
5
V Power
vcc
17 24
SID
Serial Input
Data
Not Connected
K5
18
23
K0
Not Connected
Keyboard Scan
K4
19
22
Kl Keyboard Scan
Keyboard Scan
K3
20
21
K2 Keyboard
Scan
Figure 1-6.
POKEY
Pin
Assignments
SWITCHBOX
A
switchbox
is
connected and
mounted
to
the
back
of the television
set.
The
switchbox
that
is
used with the 4-Port Models
is
different
from other switchboxes
manufactured by Atari and from
the
2-Port
Model
5200.
These
differences
include:
1)
power
for
the
Model
5200
supplied
through the switchbox
2)
two
Select
Switch
functions.
The two
functions are:
NORMAL
-
Allows
the
Model 5200
to
automatically switch
between
the
television
and the
game
when
the
Model
5200
ON/OFF
switch
is
pressed.
STANDBY
-
Enables
television
viewing while the Model 5200
is
turned
on.
CX5200
Field
Service Manual 1-7 Changed by
ECN
#0036
6/21/83