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CX PRINT SERVER 550
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Xerox 550 Reference Manual
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:
User manual
(166 pages)
,
Specification sheet
(2 pages)
,
Supplementary manual
(64 pages)
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Contents
Table of Contents
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Table of Contents
Table of Contents
It"'L_~ 1_
Xerox 550 Computer System
Introduction
General Characteristics
Standard and Opti Ona I Features
Genera 1- Purpose Fea Tures
Time-Sharing Features
Rea 1- Time Features
Multiuse Features
Multiprocessor Features
Multiprocessor Interlock
Multiport Memory System
Manual Partitioning Capability
Multiprocessor Control Function
Shared Input/Output
System Organization
Processor C I Us Ters
System Control Processor
Basic Processor
General Registers
A Xerox 550 Computer System
The Bas I C Processor
Memory Control Storage
Computer Modes
Information Format
Information Boundaries
Instruction Register
Main Memory
Memory Unit
Main Memory
Maintainability and Performance
Virtual and Real Memory
Addressing Logic
Types of Addressing
Basic Processor Operating Modes and Addressing Cases
Memory Address Control
Program Status Words
Centra I Ized Interrupts
States of an Interrupt Level
Operationa I States of an Interrupt Level
Dialogue between the Basic Processor and the Interrupt System During an Interrupt
Entering Sequence
Dialogue During an Interrupt-Exiting Sequence
Physical Organization
Interrupt Groups
Interrupt Locations
1L. Interrupt Priority Chain
Control of the Interrupt System
Single-Instruction Interrupts
Trap System
Trap Entry Sequence
Trap Addressing
Summary of Trap Locations
Trap Condition Code
Nonallowed Operation Trap
Push-Down Stack Limit Trap
Fixed-Point Overflow Trap
Floating-Point Arithmetic Fault Trap
Watchdog Timer Runout Trap
Programmed Trap
CALL Instruction Trap
Hardware Error Trap
Instruction Exception Trap
Power on Trap
Power off Trap
Processor Detected Fau I T Flag
TCC Setting for Instruction Exception Trap X'4D
Register Altered Bit
Registers Changed at Time of a Trap Due to an
Instruction Repertoire
Load/Store Instructions
Lch
Lah
Lcw
Law
Lcd
Lad
Las
Lcfi
Lcf
Lvaw
Stb
Sth
Stw
Std
Sts
Stm
Stcf
Anlz
ANALYZE Table for Operation Codes
Ana Iyze/Interpret Instructions
Int
Fixed-Point Arithmetic Instructions
Awm
Mtb
Mth
Mtw
Comparison Instructions
Clm
Clr
Logical Instructions
Eor
Shift Instructions
Floating-Point Shift
Conversion Instructions
Cva
Cvs
Floating-Point Arithmetic Instructions
Floating-Point Numbers
Floating-Point Add and Subtract
Floating-Point Number Representation
Floating-Point Multiply and Divide
Condition Codes for Floating-Point Instructions
Fas
Fal
Fss
Fsl
Condition Code Settings for Floating-Point Instructions
Fms
Fml
Fds
Fdl
Push-Down Instructions (Non-Privileged)
Stack Pointer Doubleword (SPD)
Push-Down Condition Code Settings
Psw
Plw
Psm
Plm
Msp
Push-Down Instructions (Privileged)
Status Stack Pointer Doubleword
Pss
Pls
Nonallowed Operation Trap During Execution of Branch Instruction
Exu
Bcs
Bcr
Bir
Bdr
Bal
CALL Instructions
Call 2
Cal2
Cal3
Cal4
Control Instructions
Program Status Words
Lpsd
Mly",C
Loading the Memory Map
Lmap
Lmapre
Loading the Access Protection Controls
Memory Write Protection Locks
Llocks
Llockse
Interruption of MMC
Memory Access Traps by MMC Instruction
Lra
Lms
Status Word
Wait
Control (Mode 0)
Read Direct, Internal Basic Processor
Read Direct, Interrupt Control (Mode 1
Read Direct Mode 9 Status Word
Chassis Type Assignments
Write Direct, Internal Basic Processor
Control (Mode 0)
Write Direct, Interrupt Control
Input/Output Instructions
Overall Characteristics
I/O Status Information
Hio
Formats of I/O Instructions
Description of I/O Instructions
I/O Status Information (Register R)
Device Status Byte (Register R or Ru1)
Status Response Bits for I/O Instructions
Lop Status Byte
Sio
Status Word
Status Response Bits for AIO Instruction
Rio
Polp
Polr
Aio
Input/Output Operations
External DIO Interface
Multiplexor Input/Output Processor (MIOP)
Input/Output Processor (Lop) Fundamentals
Operational IOCD
1/0 Opera Ti on Phases
Preparation Phase
Initiation Phase
Fetching Phase
Execution Phase
Termination Phase
Operational Control
External Control Subsystem
Controi Console Devices
Control Commands
Operator Control Commands
Event Messages
Zci
Zcssw
Zcss
Zcldn###Lf
Zcrsy
Zcrbp
Zcrio
Zchlt
Bootstrap Loader
Zcrun
Diagnostic Control Commands
Rubout
Diagnostic Control (P-Mode) Commands
Maintenance Control Commands
Zc Clk
Zce
Zckil
Z C Mm1
Zc Mm2
Zc Mm3
Z C Mm4
Z C Mm5
Z C Mm6
Zcc
Zcmmo
Zct
System Control Panel
System Control Panel
Operating Procedures and Information
Bit Assignments and Description, Processor
Bit Assignments, Address Compare Register
System Configuration Control
Configuration Control Panel (CCP)
Chassis Physical Configuration
Sample Rows of CCP Switches
Functions of Processor Cluster Configuration Control Panel Row
Functions of Memory Unit Configuration Control Panel Row
Reference Tables
Standard Symbo Is and Codes
Standard Character Sets
Control Codes
Special Code Properties
Standard 8-Bit Computer Codes (EBCDIC)
Standard 7-Bit Communication Codes (Anscii) 1
Hexadecimal Arithmetic
Addition Table
Multiplication Table
Table of Powers of Sixteenlo
Table of Powers of Ten16
Hexadecimal-Decimal Integer Conversion
Hexadecimal-Decimal Fraction Conversion
Table of Powers of Two
Mathematical Constants
Glossary of Symbolic Terms
Fault Status Registers
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User Manual
Xerox 550 Computer
Reference Manual
90 30 77A
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