Pioneer SCSI-2 Manuale Utente

Preface

- 7 -

Message Out-Phase (issued by host computer)

INITIATED DEFECTED ERROR

05h

ABORT

06h

NO OPERATION

08h

MESSAGE PARITY ERROR

09h

BUS DEVICE DRIVER

3

0Ch

TERMINATE IO PROCESS

11h

IDENTIFY

80h - FFh

SYNCHRONOUS DATA TRANSFER REQUEST

4

01h

With some commands, it is possible to choose either Logical Block Address or MSF Format

with Address Field of answering data.

if “0” (FALSE), use Logical Block Address as CD-ROM Absolute Address or Track

Relative Address. If Track Relative Address, the MSF bit is indicated by 2s sequences.

if “1” (TRUE), MSF Format is used. Within the shift area, number declines by a positive

number.

The table on the opposite page outlines the command structure. Some commands apply to the

entire drive. For these commands only, the LUN will be ignored.

Commands with Logical Blocks, e.g. READ, VERIFY, have Allocation Length in Blocks. All

others have Allocation Length in bytes. Some commands use Transfer Length instead of

Allocation Length to specify the number of bytes that the initiator will transfer to the drive.

                                               

3

 For equipment supporting Change Definition Command, the DRM/DR-U Series drives have a Hardware Reset Option. In this case, the

Change Definition chosen by the SCSI action definition would not be changed or initialized by either the SCSI BUS RESET or BUS
DEVICE RESET message.

4

 From EXTEND MESSAGE (01h).