Control Data Corporation CYBER 180 810 Maintenance And Parts Manual page 145

TABLE A-38. PARITY ERROR TABLE FOR A=7XXXX
1. Display Maintenance registers
2. Read register 80 (FSl)
3. Read bytes 0 through 3 to find which logical PP recorded an error
4. Read deadstart display for RB
=
xx.
5. Read bytes 4 through 7 and convert to the suspected
module using module location table A-35.
Byte
Reading Pack Code
In Hex
4 Xl CM
X4 CP
XS CP
lX
CM
2X CP
4X CR
8X CL
5
X2
CN
1
CL
X4 CL
1
CN
6
X2
CM
X4 CN
XS CN
lX CN
2X CM
4X CN
SX
CM
60469500 A
A-21