Xerox 550 - User Manual

188 pages

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Xerox 550 Computer

Reference Manual

90 30 77A

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Table of Contents4
It"'L_~ 1_7
Xerox 550 Computer System8
- Introduction8
- General Characteristics8
- Standard and Opti Ona I Features10
- Genera 1- Purpose Fea Tures10
- Time-Sharing Features11
- Rea 1- Time Features12
- Multiuse Features13
- Multiprocessor Features13
System Organization15
- Processor C I Us Ters15
- System Control Processor15
- Basic Processor15
  - General Registers15
- A Xerox 550 Computer System16
- The Bas I C Processor17
- Main Memory21
  - Memory Unit21
- Main Memory22
  - Maintainability and Performance23
  - Virtual and Real Memory24
Addressing Logic25
- Types of Addressing26
- Basic Processor Operating Modes and Addressing Cases32
- Memory Address Control33
- Program Status Words35
- Centra I Ized Interrupts37
  - States of an Interrupt Level37
- Operationa I States of an Interrupt Level38
Interrupt Locations40
- 1L. Interrupt Priority Chain41
  - Control of the Interrupt System42
  - Single-Instruction Interrupts43
- Trap System43
  - Trap Entry Sequence43
  - Trap Addressing43
Summary of Trap Locations44
- Trap Condition Code46
- Nonallowed Operation Trap46
- Push-Down Stack Limit Trap47
- Fixed-Point Overflow Trap48
- Floating-Point Arithmetic Fault Trap49
- Watchdog Timer Runout Trap49
- Programmed Trap50
- CALL Instruction Trap50
- Hardware Error Trap50
- Instruction Exception Trap50
- Power on Trap51
- Power off Trap51
- Processor Detected Fau I T Flag51
TCC Setting for Instruction Exception Trap X'4D51
- Register Altered Bit52
Registers Changed at Time of a Trap Due to an52
Instruction Repertoire53
Load/Store Instructions55
- Lch57
- Lah57
- Lcw58
- Law58
- Lcd58
- Lad59
- Las59
- Lcfi60
- Lcf61
- Lvaw61
- Stb61
- Sth62
- Stw62
- Std62
- Sts62
- Stm62
- Stcf63
- Anlz63
ANALYZE Table for Operation Codes63
Ana Iyze/Interpret Instructions64
- Int65
Fixed-Point Arithmetic Instructions65
- Awm71
- Mtb71
- Mth71
- Mtw72
Comparison Instructions72
- Clm73
- Clr74
Logical Instructions75
- Eor75
Shift Instructions76
- Floating-Point Shift78
Conversion Instructions79
- Cva79
- Cvs79
Floating-Point Arithmetic Instructions80
- Floating-Point Numbers81
- Floating-Point Add and Subtract82
Floating-Point Number Representation82
- Floating-Point Multiply and Divide84
- Condition Codes for Floating-Point Instructions84
Condition Code Settings for Floating-Point Instructions85
- Fms86
- Fml86
- Fds86
- Fdl86
Push-Down Instructions (Non-Privileged)86
- Stack Pointer Doubleword (SPD)86
- Push-Down Condition Code Settings87
Push-Down Instructions (Privileged)91
- Status Stack Pointer Doubleword91
  - Pss94
  - Pls95
- Nonallowed Operation Trap During Execution of Branch Instruction97
CALL Instructions99
- Call 299
- Cal299
- Cal399
- Cal4100
Control Instructions100
- Program Status Words100
Status Word109
- Wait110
Read Direct Mode 9 Status Word112
Chassis Type Assignments113
- Write Direct, Internal Basic Processor115
  - Control (Mode 0)115
  - Write Direct, Interrupt Control116
- Input/Output Instructions117
  - Overall Characteristics117
  - I/O Status Information117
    - Hio117
- Formats of I/O Instructions118
Description of I/O Instructions118
I/O Status Information (Register R)120
Device Status Byte (Register R or Ru1)121
- Status Response Bits for I/O Instructions123
Lop Status Byte124
- Sio125
Status Word124
Status Response Bits for AIO Instruction125
- Rio129
- Polp129
- Polr129
- Aio130
Input/Output Operations132
- External DIO Interface132
- Multiplexor Input/Output Processor (MIOP)132
- Input/Output Processor (Lop) Fundamentals133
  - Operational IOCD134
- 1/0 Opera Ti on Phases138
Operational Control142
- External Control Subsystem142
  - Controi Console Devices142
- Control Commands143
  - Operator Control Commands143
- Event Messages143
- Bootstrap Loader145
  - Zcrun146
  - Diagnostic Control Commands146
    - Rubout147
Diagnostic Control (P-Mode) Commands147
- Maintenance Control Commands148
- System Control Panel152
  - Operating Procedures and Information154
Bit Assignments and Description, Processor155
- Bit Assignments, Address Compare Register156
System Configuration Control157
- Configuration Control Panel (CCP)157
- Chassis Physical Configuration158
- Sample Rows of CCP Switches158
- Functions of Processor Cluster Configuration Control Panel Row159
Functions of Memory Unit Configuration Control Panel Row160
Reference Tables162
- Standard Symbo Is and Codes162
- Standard Character Sets162
- Control Codes162
- Special Code Properties162
- Standard 8-Bit Computer Codes (EBCDIC)163
- Glossary of Symbolic Terms181
Fault Status Registers184

Other manuals for Xerox 550

Supplementary Guide64 pages

Specification Sheet2 pages

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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

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