Quantum DAT 24 Drive Guia do Utilizador descarregar pdf (Página 171)

Commands: Test Unit Ready (00h) Page 159

If a cartridge is in the drive at power up and a TEST UNIT READY command is

issued before the tape is positioned at BOT, then the following responses occur:

First TUR Response Response during Tape Loading

UNIT ATTN 29/00 NOT READY 04/03

If a cartridge is in the drive at power up and no TEST UNIT READY command is

received until after the tape is positioned at BOT, then the following responses

occur:

First TUR Response Subsequent TUR Response

UNIT ATTN 29/00 GOOD STATUS

Completion Status

The Completion Status for the TEST UNIT READY command is shown in the

following table.

Code Message Description

00h Good

Status

• The drive is ready to perform any appropriate command.

• The drive remains in any previously set mode.

• The tape is not moved.

02h Check

Condition

Extended Sense Byte 02h:

Code Message Description

02h Not Ready No cartridge is inserted in the drive; an

immediate command execution is in progress;

or an UNLOAD command has been

executed. Bytes 12 and 13 of the Sense Data

indicate the type of not ready state.

04h Hardware Error Drive hardware failure detected.

05h Illegal Request The CDB contains an invalid bit.

06h Unit

• Cartridge was changed prior to accepting

Attention this command

• The drive was reset prior to this command.

08h Busy Tape is being initialized after cartridge insertion,, or the drive is executing a

previous immediate command.

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Quantum DAT 24 Drive Guia do Utilizador Página 171