The Write Multiple command transfers one block ( the number of sectors is defined by the Set Multiple command ) of data for each interrupt. The other commands transfer one sector of data for each interrupt.

If the drive detects an invalid parameter in register setting, the drive clears the BSY bit and sets the ERR bit in the Status register and sets the ABRT bit in the Error register and asserts INTRQ to terminate the command execution.

If an unrecoverable error occurs, the drive sets the DRQ bit and clears the BSY bit and sets the ERR bit and stores the error status in Error register and report the address information of the sector with error to Sector Number, Cylinder High, Cylinder Low and Device/Head registers and asserts INTRQ.

12.3 Non-data commands

Commands for this class are:

•CHECK POWER MODE

•EXECUTE DEVICE DIAGNOSTICS

•FLUSH CACHE

•FLUSH CACHE EXT

•IDLE

•IDLE IMMEDIATE

•INITIALIZE DEVICE PARAMETERS

•NOP

•READ VERIFY SECTOR(S)

•READ VERIFY SECTOR(S) EXT

•READ NATIVE MAX ADDRESS

•READ NATIVE MAX ADDRESS EXT

•RECALIBRATE

•SEEK

•SET FEATURES

•SET MULTIPLE MODE

•SLEEP

•STANDBY

•STANDBY IMMEDIATE

•SECURITY ERASE PREPARE

•SECURITY FREEZE LOCK

•SMART Enable/Disable Attribute Autosave

•SMART Save Attribute Values

•SMART Executive Off-line Immediate

•SMART Enable Operation

•SMART Disable Operation

•SMART Return Status

•SMART Enable/Disable Automatic Off-line

•SET MAX ADDRESS

•SET MAX ADDRESS EXT

•SET MAX LOCK

•SET MAX UNLOCK

•SET MAX FREEZE LOCK

•DEVICE CONFIGRATION RESTORE

•DEVICE CONFIGRATION FREEZE LOCK

•DEVICE CONFIGRATION SET

•READ SENCE DATA

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