Scsi Interface; Introduction; Scsi-2 Interface - Seagate STD124000N Product Manual

SCSI Interface

Introduction

SCSI-2 Interface

Product Manual
Scorpion 24 drives feature a single-ended SCSI-2 interface. Scorpion 24's SCSI-2
interface allows for communication between the host computer and the Scorpion 24
drive. The Scorpion 24 SCSI-2 interface conforms to requirements outlined in ANSI
X3.131, 199 x .
This chapter summarizes the SCSI-2 message codes, status codes and commands.
Refer to chapter 3 for specific SCSI cabling and connection information.
Refer to Seagate's DAT Tape Drive and Autoloader SCSI Manual (part number
10002663-00 x ) for detailed developer information relative to SCSI implementation.
The SCSI-2 interface for the Scorpion 24 drive conforms with the ANSI X3.131 1994
standard. The following three tables list the message codes, status codes and
commands for this interface.
SCSI Message Codes
Code Description
00 Command Complete
H
02 Save Data Pointer
H
04 Disconnect
H
05 Initiator Detected Error
H
06 Abort
H
07 Message Reject
H
08 No Operation
H
0A Linked Command Complete
H
0B Linked Command Complete with Flag
H
0C Bus Device Reset
H
80 Identify (No Disconnect/Reconnect)
H
C0 Identify (Disconnect/Reconnect)
H
2
01 Extended Message
H
1. Direction: In = Drive to host; Out = Host to Drive
2. Supports only one extended message: Synchronous Data Transfer Request
5
1
Direction
In
In
In
Out
Out
In/Out
Out
In
In
Out
In/Out
In/Out
In/Out
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