Pc Board; Microprocessor Chip - Mpu - Atari CX 5200 Field Service Manual

PC Board

I
The console you are
or the
CAOl8087
this manual for
The P C Board consists of:
• 28 Integrated Circuit Chips on PC Board Number CAOl 808 7; 26 Integrated
Circuit Chips on PC Board Number CA020 1 08; 24 Integrated Circuit Chips
on PC Board Number CA02l374.
• a cartr idge socket
• an RF module
• various discrete components
The major chips on the PC Board are:
The microprocessor (MPU) is the brain of the 5200. It makes the major decisions
based on information from the RO M cartridge and the Random Access Memory.
Figure 1-3 shows the pin assignments for the MPU.
CX5200 Field Service Manual
servlcmg may
Boards Numbers
newer PC
an explanation of the three board's differences.
VSS
ROY
'1
iRQ
N.C.
NMi
YNC 7
&
vee
AI ,
Al 10
11
A2 .
12
A.3
A_ 13
III
A'
l'
A6
.0.7 Iii
AI 17
IS
A9
I'
AIO
20
All
Figure 1-3.
contain either the o ri
or
CA020l08 CA021374.
40
3'
3&
37
36
n
3_
33
32
31
6502
30
29
2&
27
26
V
2'
MPU Pin Assignments
1-4
inal
Board Number
g PC
See Page 1-1
P2
SO
.80 (IN)
R/W
HALT
R/W
01
01
02
03
0_
0'
06
07
A15
Al4
Al3
Al2
vss
of