Hitachi C4K60 Specifications - Page 62

Execute Device Diagnostic [90h]

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7.5.6. Execute Device Diagnostic [90h] Task File Registers Command LBA High LBA Mid LBA Low Device/Head Sector Count Features 7 6 5 4 3 2 1 0 90h XX XX XX X X X DRV X X X X XX XXh This command allows the device to perform a self-diagnostics. When Device 0 and Device 1 are connected in the daisy chain mode, this command is executed for both of the devices. When the device receives this command, it sets BSY=1 and executes the self-diagnostic operation. Then the device registers the diagnostic result in the Error Register, clears BSY, and generates an interrupt. Table 7.7 Diagnostic Codes Code 01 02 03 05 8X Contents No Error Controller error Sector buffer error CPU error DRV1 error K6610170 Rev.2 Dec 22, 2004 - 62 -

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K6610170
Rev.2
Dec 22, 2004
- 62 -
7.5.6. Execute Device Diagnostic [90h]
Task File Registers
7
6
5
4
3
2
1
0
Command
90h
LBA High
XX
LBA Mid
XX
LBA Low
XX
Device/Head
X
X
X
DRV
X
X
X
X
Sector Count
XX
Features
XXh
This command allows the device to perform a self-diagnostics. When Device 0 and Device 1 are connected
in the daisy chain mode, this command is executed for both of the devices. When the device receives this
command, it sets BSY=1 and executes the self-diagnostic operation. Then the device registers the
diagnostic result in the Error Register, clears BSY, and generates an interrupt.
Table 7.7 Diagnostic Codes
Code
Contents
01
No Error
02
Controller error
03
Sector buffer error
05
CPU error
8X
DRV1 error