MSCP Basic Disk Functions Manual

Chapter 1 Introduction
- 1.1 Overview of MSCP Subsystem
- 1.2 Purpose
- 1.3 Method of Presentation
- 1.4 Scope
Chapter 2 Terminology
Chapter 3 Class Driver / MSCP Server Communications
- 3.1 Connection
- 3.2 Flow Control
- 3.3 Class Driver Responsibilities
- 3.4 MSCP Server Responsibilities
Chapter 4 Algorithms and Usage Rules
- 4.1 Controller Status
- 4.2 Controls and Indicators
- 4.3 Unit States
- 4.4 Unit Numbers
- 4.5 Command Categories and Execution Order
- 4.6 Class Driver / MSCP Server Synchronization
- 4.7 Class Driver Error Recovery
- 4.8 (This section deliberately omitted)
- 4.9 Host Access Timeouts
- 4.10 Command Timeouts
- 4.11 Disk Geometry and Format
- 4.12 Bad Block Replacement
- 4.13 Write Protection
- 4.14 Compare Operations
- 4.15 Multi-Unit Drives and Formatters
- 4.16 Controller and Unit Identifiers
- 4.17 Media Type Identifiers
Chapter 5 MSCP Control Message Formats
- 5.1 Generic Control Message Format
- 5.2 Reserved and Undefined Fields
- 5.3 Transfer Command Message Format
- 5.4 Command Modifiers
- 5.5 End Message Format
- 5.6 Status Codes
- 5.7 Unit Flags
- 5.8 Controller Flags
Chapter 6 Minimal Disk MSCP Subset
- 6.1 (This section deliberately omitted)
- 6.2 (This section deliberately omitted)
- 6.3 ABORT Command
- 6.4 ACCESS Command
- 6.5 AVAILABLE Command
- 6.6 (This section deliberately omitted)
- 6.7 COMPARE HOST DATA Command
- 6.8 DETERMINE ACCESS PATHS Command
- 6.9 ERASE Command
- 6.10 (This section deliberately omitted)
- 6.11 GET COMMAND STATUS Command
- 6.12 GET UNIT STATUS Command
- 6.13 ONLINE Command
- 6.14 READ Command
- 6.15 REPLACE Command
- 6.16 SET CONTROLLER CHARACTERISTICS Command
- 6.17 SET UNIT CHARACTERISTICS Command
- 6.18 WRITE Command
- 6.19 Invalid Command End Message
- 6.20 ACCESS PATH Attention Message
- 6.21 AVAILABLE Attention Message
- 6.22 DUPLICATE UNIT NUMBER Attention Message
Chapter 7 Disk MSCP Options
Chapter 8 MSCP Error Log Message Formats
- 8.1 Introduction
- 8.2 Generic Error Log Message Format
- 8.3 Controller Errors
- 8.4 Host Memory Access Errors with Bus Address
- 8.5 Disk Transfer Errors
- 8.6 SDI Errors
Appendix A Opcode, Flag, and Offset Definitions
Appendix B Status and Event Code Definitions
Appendix C Controller, Unit, and Media Type Identifier Values
Appendix D Buffer Descriptor Formats

Company:	Digital Equipment Corporation
Part:	AA-L619A-TK
Date:	1982-04
Keywords:	UDA50

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MSCP Basic Disk Functions Manual

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