Exabyte EXB-8205 Instruções de Operação descarregar pdf (Página 271)

Bytes 19 through 21 - Unit Sense

For each status bit defined in the Unit Sense bytes, the normal or

Good status is 0. When set to 1, these bytes indicate the condition

defined for that bit, as follows. Note that the effective value for the

RSVD bits is 0.

Byte 19, Bit 7 - PF (Power Fail) The CTS has been reset since the

last status, or the CTS has performed an internal reset due to

power-up.

Byte 19, Bit 6 - BPE (SCSI Bus Parity Error) The CTS detected a

SCSI bus parity error.

Byte 19, Bit 5 - FPE (Formatted Buffer Parity Error) The CTS

detected an internal data buffer parity error.

Byte 19, Bit 4 - ME (Media Error) In write mode, this bit is set to

indicate a permanent write error. In read mode, this bit is set to

indicate an uncorrectable read error.

Byte 19, Bit 3 - ECO (Error Counter Overflow) The Read/Write

Retry Counter (byte 27) overflowed to 0.

Byte 19, Bit 2 - TME (Tape Motion Error) The CTS detected an error

while attempting to acquire tracking.

Byte 19, Bit 1 - TNP (Tape Not Present) The CTS does not have a

data cartridge inserted.

Byte 19, Bit 0 - LBOT (Logical Beginning of Tape) The data

cartridge is positioned at the logical beginning of tape.

Byte 20, Bit 7 - RSVD This bit is reserved.

Byte 20, Bit 6 - TMD (Tape Mark Detect Error) An error occurred

when the CTS was attempting to perform a space filemark

operation, resulting in an invalid location relative to the requested

location. The Valid bit is set to 1, and the Information bytes (bytes

03 through 06) indicate the difference between the number of

filemarks specified by the initiator and the actual number of

filemarks processed by the CTS. This may be a host recoverable

error. The initiator needs to re-send the SPACE command with the

correct number of filemarks.

Note: This bit is valid for tapes written in 8200 format only.

May 1994 EXB-8205 and EXB-8505

(Standard and XL)

18-9

18 REQUEST SENSE (03h)

1 2 ... 266 267 268 269 270 271 272 273 274 275 276 ... 445 446

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Exabyte EXB-8205 Instruções de Operação Página 271