Exabyte EXB-8205 Instruções de Operação descarregar pdf (Página 209)

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101

Byte 02, Bit 2 - EBD (Even Byte Disconnect)

This bit is used to enable disconnects on even-byte boundaries, as

follows:

0 – Disconnect on any byte.

1 – Disconnect on even-byte (two-byte or four-byte) boundaries.

Notes:

An EEPROM option allows you to control what happens when

the EBD bit is set to 1. Depending on the CTS’s EEPROM image,

setting the EBD bit to 1 allows disconnects to occur on two-byte

boundaries or on four-byte boundaries (see the “EBD unit size”

option on page A-23).

If the logical block length specified by the Block Length field in

the Block Descriptor is not divisible by 4 (or 2 if the EEPROM

image is set for two-byte boundary disconnect), setting the EBD

bit to 1 causes the CTS to return Check Condition status with the

sense key set to Illegal Request (5h).

Byte 02, 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 02, 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.

May 1994 EXB-8205 and EXB-8505

(Standard and XL)

10-53

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

1 2 ... 204 205 206 207 208 209 210 211 212 213 214 ... 445 446

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Exabyte EXB-8205 Instruções de Operação Página 209

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