Fujitsu MHV2060AS, MHV2080AS, MHV2040AS manual Initialize Device Parameters X’91’

Models: MHV2060AS MHV2080AS MHV2040AS

1 280
Download 280 pages 57.54 Kb
Page 106
Image 106

Interface

(8) INITIALIZE DEVICE PARAMETERS (X’91’)

The host system can set the number of sectors per track and the maximum head number (maximum head number is “number of heads minus 1”) per cylinder with this command. Upon receipt of this command, the device sets the BSY bit of Status register and saves the parameters. Then the device clears the BSY bit and generates an interrupt.

When the SC register is specified to X’00’, an ABORTED COMMAND error is posted. Other than X’00’ is specified, this command terminates normally.

The parameters set by this command are retained even after reset or power save operation regardless of the setting of disabling the reverting to default setting.

The device ignores the L bit specification and operates with only CHS mode specification.

At command issuance (I/O registers setting contents)

1F7H(CM)

1

0

0

1

0

0

0

1

 

 

 

 

 

 

 

 

1F6H(DH)

x

x

x

DV

Max. head No.

 

 

1F5H(CH)

xx

 

 

 

 

 

 

 

1F4H(CL)

xx

 

 

 

 

 

 

 

1F3H(SN)

xx

 

 

 

 

 

 

 

1F2H(SC)

Number of sectors/track

 

 

 

 

1F1H(FR)

xx

 

 

 

 

 

 

 

At command completion (I/O registers contents to be read)

1F7H(ST)

Status information

 

 

 

 

 

 

 

 

1F6H(DH)

x

x

x

DV

Max. head No.

1F5H(CH)

xx

 

 

 

 

1F4H(CL)

xx

 

 

 

 

1F3H(SN)

xx

 

 

 

 

1F2H(SC)

Number of sectors/track

1F1H(ER)

Error information

 

 

 

 

 

 

 

 

5-30

C141-E221

Page 106
Image 106
Fujitsu MHV2060AS, MHV2080AS, MHV2040AS manual Initialize Device Parameters X’91’