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FUJITSU DISK DRIVES MHM215OAT User Manual

Page 129

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Interface

5-52

C141-E104-02EN

When device 1 is not present:

The device 0 posts only the results of its own self-diagnosis.

The device 0 clears the BSY bit of the Status register, and generates an
interrupt.

Table 5.6 lists the diagnostic code written in the Error register which is 8-bit code.

If the device 1 fails the self-diagnosis, the device 0 “ORs” X’80’ with its own
status and sets that code to the Error register.

Table 5.6 Diagnostic code

Code

Result of diagnostic

X’01’

X’03’

X’05’

X’8x’

No error detected.

Data buffer compare error

ROM sum check error

Failure of device 1

attention: The device responds normally to this command without executing

internal diagnostic test.

At command issuance (I/O registers setting contents)

1F7

H

(CM)

1

0

0

1

0

0

0

0

1F6

H

(DH)

x

x

x

DV

Head No. /LBA

[

MSB]

1F5

H

(CH)

1F4

H

(CL)

1F3

H

(SN)

1F2

H

(SC)

1F1

H

(FR)

xx

xx

xx

xx

xx

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