Xerox 550 User Manual

APPENDIX C. FAULT STATUS REGISTERS
Table C-1. Fault Status Registers
Bit
Status Registers ~ Faults Detected By:
Position
Basic Processor
MIOP
MI
PI
System Control
Processor
0
16
PFI PFI
PFI
PFI PFI
1
17
General register parity Bus Check Fault
Map or access - pro- Cluster bus Parity error on
error
(BCF tec t reg i ster pari ty error
parity error
processor bus
2
18
Control register parity
Control Check
Cl uster bus pari ty error
Processor bus
Operation code
error
Fault (CCF)
parity error error
3
19
Interna I basi c processor Control Memory
Reserved
Unrecognized Reserved
bus pari ty error
Fault (CMF)
operati on code
4
20
Cluster
bus parity error CMF II 0 adapter
Reserved
Reserved Reserved
5
21
Processor-Detected
MIE Cluster bus sequence
Reserved Reserved
Fault flag (PDF) check fault
6
22
Memory
parity error Data/order
" Reserved
Reserved Reserved
indicator
t
7
23
Memory
Interface Error Out/In i ndicator
t
Reserved
Multiple error
Reserved
(MIE)
8
24
Processor interface Control Memory
Reserved
Control Memory
Reserved
sequence .check
fault Fault (CMF)
Fault (CMF)
address bi t 0
address bit 0
9 25
Extended
arithmetic CMF
Reserved
CMF Reserved
sequence check fault
address
bi t 1
address
bit 1
10 26
Basic processor
CMF
Reserved CMF
Reserved
sequence check fault
address bi t 2
address
bi t 2
11
27
Successfu I i nstructi on CMF
Reserved CMF
Reserved
retry
address
bi t 3 address bi t 3
12 28 Control memory pari ty
CMF Reserved CMF
Reserved
error
(BPE module)
address
bit 4
address
bit 4
13
29
Control memory parity
CMF
Reserved CMF Reserved
error
(BPF module) address bi t 5
address
bi t 5
14
30
Control
memory parity CMF
Reserved CMF
Reserved
error
(BPG module) address bi t 6 address bit 6
15
31
Control memory pari ty CMF
Reserved CMF
Reserved
error
(BPH module)
address
bi t 7
address
bi t 7
tThis is a
2-bit code indicating type of service call, as follows:
Bits
MIOP
Bits MIOP
6
7
Significance
6
7
Significance
-
0
0
Data In
1
0
Order In
0 1 Data Out 1 1 Order Out
Appendix C 177

Xerox 550 Specifications

General

Monthly Duty Cycle	Up to 300, 000 pages
Connectivity	Ethernet, USB
Print Speed (Color)	Up to 50 ppm
Duplex Printing	Standard
Printer Type	Laser
Supported Operating Systems	Windows, macOS, Linux
Paper Size	A4, Legal, Letter