Fault Status Registers; C-L. Fault Status Registers - Xerox 560 Reference Manual

APPENDIX C. FAULT STATUS REGISTERS
Table C-1. Fault Status Registers
Status Registers - Faults Detected By:
Bit System Control
Position Basic Processor MIOP RMP MI PI Processor
0 16 PFI PFI PFI PFI PFI PFI
1 17 General register
Bus Check Fault
BCF
Mapor access- Cluster bus Parity error on
parity error (BCF) protect register parity error processor bus
pari ty error
2 18 Control register
·Control Check
CCF Cluster bus Processor bus Operation
parity error Fault (CCF) parity error parity error code error
3
19 Internal basic processor Control Memory
CMF
Reserved Unrecognized Reserved
bus pari ty error
Fault (CMF)
operation code
4 20 Clusterbus parity error CMF
I/o
adapter ECE Reserved Reserved Reserved
5
21
Processor-Detected
MIE
MIE Cluster bus
Reserved Reserved
Fault flag (PDF) sequence check
fault
6
22 Memory parity error
Data/order
Order Reserved Reserved Reserved
indicator t
type t
7 23
Memory Interface
Out indicator t
Order Reserved Multiple error Reserved
Error (MIE)
type t
8
24 Processor interface Contro I Memory Reserved Reserved Control Memory Reserved
sequence check Fault (CMF)
Fault (CMF)
fault address bit 0 address bit 0
9 25 Extended arithmetic CMF Reserved Reserved CMF Reserved
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10 26 Basi c processor CMF Reserved Reserved CMF Reserved
sequence check fau It address bit 2 address bit 2
11
27 Successfu I instruc-
CMF
Reserved Reserved
CMF
Reserved
tion retry address bit 3 address bit 3
12 28 Control memory parity CMF Reserved Reserved CMF Reserved
error (BPE module) address bit 4 address bit 4
13 29 Control memory parity
CMF
Reserved Reserved
CMF
Reserved
error (BPF module) address bit 5 address bit 5
14 30 Control memory parity CMF Reserved Reserved CMF Reserved
error (B PG modu Ie) address bit 6 address bit 6
15
31
Control memory parity CMF Reserved Reserved CMF Reserved
error (BPH module) address bit 7 address bit 7
tThis is a 2-bit code indicating type of service call, as follows:
Bits MIOP RMP
-
6 7 Signifi cance Significance
- -
0 0 Data In Sense
0 1 Data Out Write
1
0
Order In Read
1
1 Order Out Control
Appendix C 195