Quantum DAT 24 Drive Guia do Utilizador descarregar pdf (Página 169)

Commands: Space (11h) Page 157

Referring to the first table, the table below shows the tape position after each

SPACE command is complete.

SPACE X Blocks From RSMK bit Tape Position

1 BOT ON B

-7 EOD ON E

1 BOT OFF E

-7 EPD OFF E

2 BOT ON C, chk cond res = 1

-8 EOD ON D, chk cond res = -1

2 BOT OFF F

-8 EOD OFF A

Completion Status

The Completion Status for the SPACE 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 positioned on the EOT side if space forward and on the BOT side if

space reverse.

02h Check

Condition

Extended Sense Byte 02h:

Code Message Description

02h Not Ready No cartridge is inserted in the drive.

03h Media Error Unrecoverable data error encountered while

performing a SPACE command.

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 Blank Check

• EOD was encountered while executing a

SPACE forward.

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Quantum DAT 24 Drive Guia do Utilizador Página 169