Exabyte EXB-8205 Instruções de Operação descarregar pdf (Página 179)

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Byte 00, Bit 1 - PE (Parity Enable)

This bit is used to enable parity checking on the SCSI bus. When this

bit is set to 1, every byte received by the CTS is checked for parity.

0 – Parity checking disabled.

1 – Parity checking enabled. (Power-on default)

Byte 00, Bit 0 - NAL (No Auto Load)

This bit is used to disable the automatic loading of the tape into the

tape path when a data cartridge is inserted into the CTS, as follows:

0 – Auto loading enabled. (Power-on default)

1 – Auto loading disabled.

Byte 01, Bit 0 - 112m

The 112m bit works in conjunction with the CT bit (byte 00, bit 7) to

indicate the size of the data cartridge that is expected to be loaded in

the CTS. Refer to Table 10-10 on page 10-21 for the combinations of

settings for the CT and 112m bits.

Notes:

If you are using 160m XL data cartridges with an EXB-8505XL or

EXB-8205XL, the CTS ignores the settings of the CT and 112m bits.

You can set the 112m bit only when the tape is positioned at

LBOT.

The 112m bit is equivalent to the P5 bit for the EXB-8500.

Byte 02 - Motion Threshold

The value in the Motion Threshold byte indicates the amount of data

that must be in the buffer before tape motion is started for a buffered

write or read operation. The value is expressed in 4-KByte increments.

The default is 80h (512 KBytes). Valid values range from 20h to D0h

(128 to 832 KBytes). For more information about the motion

threshold, see Section 3.6.

May 1994 EXB-8205 and EXB-8505

(Standard and XL)

10-23

10 MODE SELECT (15h) andMODE SENSE (1Ah)

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