Service Manuals, User Guides, Schematic Diagrams or docs for : xerox mesa princ_ops Mesa_Processor_Principles_of_Operation_Version_4.0_May85
<< Back | HomeMost service manuals and schematics are PDF files, so You will need Adobre Acrobat Reader to view : Acrobat Download Some of the files are DjVu format. Readers and resources available here : DjVu Resources
For the compressed files, most common are zip and rar. Please, extract files with Your favorite compression software ( WinZip, WinRAR ... ) before viewing. If a document has multiple parts, You should download all, before extracting.
Good luck. Repair on Your own risk. Make sure You know what You are doing.
Image preview - the first page of the document
>> Download Mesa_Processor_Principles_of_Operation_Version_4.0_May85 documenatation <<
Text preview - extract from the document
XEROX
Mesa Processor Principles of Operation
Version 4.0
May 1985
Office Systems Division
2400 Geng Road
Palo Alto, California 94303
J.
Mesa Processor Principles of Operation
Notice
This document is being provided for information only. Xerox makes no warranties or representations of any kind
relative to this document or its use, including implied warranties of merchantability or of fitness for a particular
purpose. Xerox assumes no responsibility or liability for any errors or inaccuracies that may be contained in the
document, and does not guarantee that the use of the information herein will function or perform in an intended
manner.
The information contained herein is subject to change without any obligation of notice on the part of Xerox.
/.
Copyright c> 1985 by Xerox Corporation.
All Rights Reserved.
Table of contents
1 Introduction
1.1 Technical Summary 1-2
1.1.1 High Level Languages . 1-2
1.1.2 Compact Program Representation . 1-2
1.1.3 Compact Data Representation . 1-3
1.1.4 Read Only Relocatable Code 1-3
1.1.5 Stack Machine . 1-3
1.1.6 Control Transfers . 1-3
1.1.7 Process Mechanism 1-3
1.1.8 Virtual Memory 1-4
1.1.9 Protection . 1-4
1.2 Terminology . ., 1-4
1.2.1 Architecture 1-4
1.2.2 Processor 1-4
1.2.3 Programmer 1-5
1.3 Conventions . 1-5
1.3.1 Type Checking. 1-6
1.3.2 Type Representation 1-6
1.3.3 Subrange Types 1-6
1.3.4 Enumerated Types. 1-6
1.3.5 Pointers 1-6
1.3.6 Arrays and Records 1-7
1.3.7 Type Conversion 1-7
1.3.8 Built-in Routines 1-7
1.3.9 Control Flow 1-7
1.3.10 Signals and Errors . 1-7
1.3.11 Instruction Descriptions 1-8
i
Table of contents
2 Data Types
2.1 Basic Data Types 2-1
2.1.1 Unspecified 2-2
2.1.2 Bit, Nibble, Byte 2-2
2.1.3 Basic Operators 2-2
2.2 Numeric Types 2-3
2.2.1 Cardinal 2-4
2.2.2 Integer. 2-4
2.2.3 Real 2-4
2.3 Long and Pointer Types 2-4
2.3.1 Long Types 2-4
2.3.2 Pointer Types 2-5
2.4 Type Conversion . 2-6
2.4.1 Assignment 2-6
2.4.2 SignedIUnsigned Conversions . 2-6
2.4.3 ShortiLong Conversions 2-7
2.4.4 Pointer Conversions 2-7
3 Memory Organization
3.1 Virtual Memory 3-1
3.1.1 Virtual Memory Mapping 3-2
3.1.2 Memory Map Instructions . 3-5
3.1.3 Virtual Memory Access 3-6
3.1.4 Virtual Memory Data Structures 3-7
3.2 Main Data Spaces. 3-10
3.2.1 Main Data Space Access 3-11
3.2.2 Main Data Space Data structures 3-12
3.2.3 Frame Overhead Access 3-15
3.3 Processor Memories 3-16
3.3.1 Control Registers 3-16
3.3.2 Evaluation Stack 3-18
3.3.3 Data and Status Registers . 3-20
3.3.4 Register Instructions 3-21
4 Instruction Interpreter
4.1 Interpreter 4-1
4.2 Instruction Formats 4-2
J.
4.3 Instruction Fetch . 4-2
4.4 Address Calculation 4-3
4.5 Instruction Execution. 4-4
4.6 Exceptions 4-5
ii
Mesa Processor Principles of Operation
4.6.1 Traps and Faults 4-5
4.6.2 Interrupts . 4-7
4.7 Initial State 4-7
5 Stack Instructions
5.1 Stack Primitives . 5-1
5.2 Check Instructions 5-3
5.3 Unary Operations 5-4
5.4 "Logical Operations 5-5
5.5 Arithmetic Operations 5-7
5.6 Comparison Operations 5-11
5.7 Floating Point Operations 5-11
6 Jump Instructions
6.1 Unconditional Jumps . 6-1
6.2 Equality Jumps 6-2
6.3 Signed Jumps. 6-5
6.4 Unsigned Jumps . 6-5
6.5 Indexed Jumps 6-6
7 Assignment Instructions
7.1 Immediate Instructions 7-1
7.2 Frame Instructions 7-2
7.2.1 Local Frame Access 7-3
7.2.2 Global Frame Access 7-6
7.3 Pointer Instructions 7-7
7.3.1 Direct Pointer Instructions. 7-8
7.3.2 Indirect Pointer Instructions 7-12
7.4 String Instructions 7-14
7.4.1 Read String 7-15
7.4.2 Write String 7-16
7.5 Field Instructions 7-16
7.5.1 ReadField. 7-18
7.5.2 Write Field. 7-19
7.5.3 Put Swapped Field . 7-21
8 Block Transfers
8.1 Interpreter 8-1
8.2 Bit Boundary Block Transfers 8-4
8.3 Byte Boundary Block Transfers 8-6
8.4 Bit Boundary Block Transfer . 8-7
iii
Table of contents
8.4.1 Bit Transfer Utilities 8-8
8.4.2 Bit Block Transfer . 8-8
8.4.3 Text Block Transfer 8-16
9 Data Types
9.1 Control Links. 9-1
9.1.1 Frame Control Links 9-2
9.1.2 Indirect Control Links . 9-3
9.1.3 Procedure Descriptors . 9-3
9.2 Frame Allocation. 9-4
9.2.1 Frame Allocation Vector 9-4
9.2.2 Frame Allocation Primitives 9-6
9.2.3 Frame Allocation Instructions . 9-7
9.3 Control Transfer Primitive 9-7
9.4 Control Transfer Instructions. 9-10
9.4.1 Local Function Calls 9-10
9.4.2 External Function Calls 9-11
9.4.3 Nested Function Calls. 9-13
9.4.4 Returns 9-13
9.4.5 Coroutine Transfers 9-14
9.4.6 Link Instructions 9-18
9.5 Traps 9-19
9.5.1 Trap Routines . 9-19
9.5.2 Trap Processing 9-21
9.5.3 Trap Handlers . 9-23
9.5.4 Breakpoints 9-25
9.5.5 XferTraps. 9-26
10 Processes
10.1 Data Structures 10-2
10.1.1 Process Data Area . 10-2
10.1.2 Process State Blocks 10-4
10.1.3 Monitor Locks . 10-6
10.1.4 Condition Variables 10-6
10.1.5 Process Queues. 10-6
10.2 Process Instructions . 10-7
10.2.1 Monitor Entry . 10-7
10.2.2 Monitor Exit 10-9
10.2.3 Monitor Wait 10-10
10.2.4 Monitor Reentry 10-11
10.2.5 Notify and Broadcast 10-12
-
iv
Mesa Processor Principles of Operation
10.2.6 Requeue 10-13
10.2.7 SetProcessPriority . 10-14
10.3 Queue Management . 10-14
10.3.1 Queuing Procedures 10-14
10.3.2 Cleanup Links . 10-16
10.4 Scheduling 10-18
10.4.1 Scheduler. 10-18
10.4.2 Process State 10-20
10.4.3 Faults. 10-23
10.4.4 Interrupts . 10-24
10.4.5 Timeouts 10-28
Appendices
A Values of Constants A-l
B Opcodes . B-1
References. R-1
Indexes
Primary Index. P-l
Mesa Code Index. MC-l
Opcode Names ON-1
Opcode Mnemonics . OM-l
v
Table of contents
IDustrations
2.1 Sixteen Bit Word . 2-1
2.2 Thirty-two Bit Double Word 2-5
2.3 Double Word in Memory . 2-5
3.1 ' Virtual Memory Mapping. 3-3
3.2 Virtual Memory Structure ◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo