Fujitsu M2488 manual Vendor Unique Parameter 00 Vendor Unique Parameter

TAPE UNIT PARAMETERS

M2488 PRODUCT GUIDE

5-2.2

Vendor Unique Parameter

Table 5-2. Page 00 - Vendor Unique Parameter

BITS

MODE

SENSE

BYTES

7

6

5

4

3

2

1

0

DEFAULT

VALUES

0

PS *

Reserved

Page Code

80h

1

Additional Page Length

0Eh

2

Reserved

WRTY

Reserved

PAEB

Reserved

00h

3

Reserved

FRU

Reserved

00h

4

ADTT

FEh

5-15

Reserved

00h

* The PS bit must be set to 0 on a MODE SELECT command.

Table 5-3. Page 00 -Vendor Unique Parameter Field Description

BYTE	BIT	VALUE	DESCRIPTION
2	6	1	When the WRTY bit is set to one, the following feature will be activated:
			* if bit 7 of the Write Retry Count field in Mode Page 01h is set to zero, permanent write
			errors are to be reported after the retry count in bits 6-0 of the Write Retry Count field have
			been exhausted.
			* if bit 7 of the Write Retry Count field in Mode Page 01h is set to one, write errors are not
			reported, and writing is continued on the next block unless the tape position is lost while
			attempting the write operations. CAUTION: This setting may produce unreadable tapes.
		0	When WRTY is set to zero, bits 7-0 of the Write Retry Count field all represent the retry
			count setting and permanent write errors will always be reported.
			The WRTY bit is reported as changeable on a MODE SENSE command, and the default
			value is zero.
2	4	1	When the Position After Error Block (PAEB) bit is set to one, and there is a permanent read
			error on tape, the read head is positioned on the opposite side of the error block from the
			direction being read (i.e. EOT side for a read forward operation or BOT side for a read
			reverse operation). When the read error occurs during a Read (forward) operation, a Read
			Position command gives the BID of the block following the block in error.When the read
			error occurs during a Read Reverse operation, a Read Position command gives the BID of
			the actual block in error.
		0	When PAEB is set to zero, everything remains the same except for the Read Position data,
			which would give the BID of the block to position to in order to retry the same read opera-
			tion on the bad block. This allows alternate device retry by the host.The host system
			requests the cartridge be moved to another device, does a Locate to the block indicated in
			the Read Position data, followed by a read operation in the same direction as when the read
			data check originally occurred (Read or Read Reverse).
			The PAEB bit is reported as changeable on a MODE SENSE command and the default
			value is zero.

5-2 CG00000-011503 REV. A April 1997