EN 29316 : 1990

1 Scope
2 Normative references
3 Definitions, abbreviations and conventions
3.1 Definitions
3.2 Abbreviations
3.3 Editorial conventions
4 Physical Characteristics
4.1 Physical Description
4.2 Cable Requirements
4.3 Connector Requirements
4.4 Electrical Description
4.5 SCSI Bus
4.6 SCSI Bus Signals
4.7 SCSI Bus Timing
5 Logical characteristics
5.1 SCSI Bus Phases
5.2 SCSI Bus Conditions
5.3 SCSI Bus Phase Sequences
5.4 SCSI Pointers
6 SCSI commands
6.1 Command Implementation Requirements
6.2 Command Descriptor Block (CDB)
6.3 Command Examples
7 Command descriptions for all device types
7.1 Group 0 Commands for All Device Types
7.2 Group 1 Commands for All Device Types
7.3 Group 2 Commands for All Device Types
7.4 Group 3 Commands for All Device Types
7.5 Group 4 Commands for All Device Types
7.6 Group 5 Commands for All Device Types
7.7 Group 6 Commands for All Device Types
7.8 Group 7 Commands for All Device Types
8 Command descriptions for direct-access devices
8.1 Group 0 Commands for Direct-Access Devices
8.2 Group 1 Commands for Direct-Access Devices
9 Group 0 command descriptions for sequential-access
      devices
9.1 REWIND Command
9.2 READ BLOCK LIMITS Command
9.3 READ Command
9.4 WRITE Command
9.5 TRACK SELECT Command
9.6 READ REVERSE Command
9.7 WRITE FILEMARKS Command
9.8 SPACE Command
9.9 VERIFY Command
9.10 RECOVER BUFFERED DATA Command
9.11 MODE SELECT Command
9.12 RESERVE UNIT and RELEASE UNIT Commands
9.13 ERASE Command
9.14 MODE SENSE Command
9.15 LOAD/UNLOAD Command
9.16 PREVENT/ALLOW MEDIUM REMOVAL Command
10 Group 0 command descriptions for printer devices
10.1 FORMAT Command
10.2 PRINT Command
10.3 SLEW AND PRINT Command
10.4 FLUSH BUFFER Command
10.5 RECOVER BUFFERED DATA Command
10.6 MODE SELECT Command
10.7 RESERVE UNIT and RELEASE UNIT Commands
10.8 MODE SENSE Command
10.9 STOP PRINT Command
11 Group 0 command descriptions for processor devices
11.1 RECEIVE Command
11.2 SEND Command
12 Command descriptions for write-once read-multiple
      devices
12.1 Group 0 Commands for Write-Once Read-Multiple
      Devices
13 Command descriptions for read-only direct-access
      devices
13.1 Group 0 Commands for Read-Only Direct-Access
      Devices
13.2 Group 1 Commands for Read-Only Direct-Access
      Devices
14 Status
Annexes
A SCSI Signal Sequence Example
B Typical Bus Phase Sequence
C SCSI System Operation
D Recommended Shielded Connectors
E Conformance
F Additional Medium Type and Density Code Standards

Describes mechanical, electrical, and functional requirements for a small computer input/output bus and command sets for peripheral device types commonly used with small computers. The small computer system interface, described in this Standard, is a local I/O bus that can be operated at data rates up to 4 Mbytes/s and provides host computers with device independence within a class of devices. Thus, different disk drives, tape drives, printers, and communication devices can be added to host computer(s) without requiring modifications to generic system hardware or software.