CD-ROM SCSI-2 COMMAND REFERENCE MANUAL VERSION 3.1 (OB-U0077C)

TABLE 2-9-7A PARAMETER DESCRIPTION

Bit

Parameter

 

Description

0

Audio Play

The drive is capable of Audio Play operation. This also indicates

 

 

that the drive is capable of overlapping Play and other commands

 

 

such as reading of the Sub-channel information.

1

XA Commands Supported

This bit has been reserved for future support of CD-ROM XA

 

 

commands. Drives which set this bit shall support all CD-ROM XA

 

 

commands.

4

Mode 2 Form1

The drive is capable of reading sectors in Mode 2 Form 1(XA)

 

 

format.

 

5

Mode 2 Form2

The drive is capable of reading sectors in Mode 2 Form 2 format.

6

Multi-Session

The drive is capable of reading multiple session or Photo-CD discs.

8

READ CD-DA

Red Book audio can be read using the READ-CD command.

9

CD-DA Stream is Accurate

This bit indicates that the drive supports an advanced feature that

 

 

allows it to return to an audio location without losing place to

 

 

continue the READ CD-DA command.

 

 

0

The drive is incapable of accurately restarting the CD-DA

 

 

 

read operation , and a BUFFER OVERFLOW error shall

 

 

 

be reported whenever a loss of streaming occurs, This

 

 

 

error will be fatal and the command will have to be

 

 

 

repeated from the beginning.

 

 

1

The drive can continue from a loss of streaming condition

 

 

 

and no error will be generated.

10

R-W Supported

The commands that return Sub-channel data can return the

 

 

combined R-W information.

11

R-W De-Interleaved &

This indicates that the R-W sub-channel data will be returned de-

 

Correction

interleaved and error corrected.

12

C2 Pointers are Supported

This indicates that the drive supports the C2 Error Pointers . This

 

 

also indicates that the drive is capable of returning the C2 Error

 

 

Pointers and C2 Block Error flags in the READ CD command.

13

UPC

The drive can return the Media Catalog Number (UPC).

14

ISRC

The drive can return the International Standard Recording Code

 

 

Information.

16

Lock

The PREVENT/ALLOW command is capable of actually locking

 

 

the media into the drive.

17

Lock State

This Indicates the current state of the drive.

 

 

0

The drive is currently in the allow (Unlocked ) state.

 

 

 

Media may be inserted or ejected.

 

 

1

The drive is currently in the prevent (Locked) state.

 

 

 

Media loaded in the drive may not be removed via a soft

 

 

 

or hard eject. If the drive is empty, media may not be

 

 

 

inserted if the Prevent Jumper is not present. If the jumper

 

 

 

is present, then media may be inserted.

18

Prevent Jumper

This indicates the state of the (Optional) Prevent / Allow Jumper.

 

 

0

Jumper is present. Drive will power up to the allow state.

 

 

 

Locking the drive with the Prevent /Allow Command shall

 

 

 

NOT prevent the insertion of media

 

 

1

Jumper is not present. Drive will power up to the Prevent

 

 

 

State (Locked). The drive will not accept new media or

 

 

 

allow the ejection of media already loaded until an allow

 

 

 

command is issued.

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