SMART RETURN STATUS - B0h/DAh, Non-Data

SMART RETURN STATUS - B0h/DAh, Non-Data

Inputs:

Register	7	6	5	4	3		2		1		0
Features	DAh
Sector Count	na
LBA Low	na
LBA Mid	4Fh
LBA High	C2h
Device	obs	na	obs	DEV	na	na		na		na
Command	B0h

SMART Return Status Normal Output

Register	7	6	5	4	3	2		1		0
Error	na
Sector Count	na
LBA	Bit Description 27:24 N/A 23:8(High Mid) Value Description C24Fh The subcommand specified a captive self-test that has completed without error. 2CF4h The device has detected a threshold exceeded condition. All Other Undefined Values 7:0(LOW) N/A
Device	obs	na	obs	DEV	na		na		na		na
Status	BSY	DRDY	DF	na	DRQ		na		na		ERR

ATA PASS-THROUGH (12) command

ATA PASS-THROUGH (12) command (A1h)

Bit Byte	7	6	5		4	3	2	1	0
0	OPERATION CODE (A1h)
1	MULTIPLE_COUNT				PROTOCOL			Reaseved
2	OFF_LINE			CK_COND	Reserved	T_DIR	BYT_BLOK	T_LENGTH
3	FEATURES (0:7)
4	SECTOR_COUNT (0:7)
5	LBA_LOW (0:7)
6	LBA_MID (0:7)
7	LBA_HIGH (0:7)
8	DEVICE
9	COMMAND
10	Reserved
11	CONTROL

ATA Protocols

Protocol	Description
0	Hard Reset
1	SRST
2	Reserved
3	Non-data
4	PIO Data-In
5	PIO Data-Out
6	DMA
7	DMA Queued
8	Device Diagnostic
9	DEVICE RESET
10	UDMA Data In
11	UDMA Data Out
12	FPDMA
13, 14	Reserved
15	Return Response Information

ATA PASS-THROUGH (12/16) DEVICE field

Bit	7	6	5	4	3	2	1	0
	Obsolete	Command Specific	Obsolete	DEV	Command Specific

T_LENGTH Values

Protocol	Description
00h	No data is transferred
01h	The transfer length is specified in the FEATURE field.
02h	The transfer length is specified in the SECTOR_COUNT field.
03h	The transfer length is specified in the STPSIU field.

Extended ATA Status Return Descriptor

Bit Byte	7	6	5	4	3	2	1	0
0	DESCRIPTOR CODE (09h)
1	ADDITIONAL DESCRIPTOR LENGTH (0ch)
2	Reserved							EXTEND
3	ERROR
4	SECTOR_COUNT (8:15)
5	SECTOR_COUNT (0:7)
6	LBA_LOW (8:15)
7	LBA_LOW (0:7)
8	LBA_MID (8:15)
9	LBA_MID (0:7)
10	LBA_HIGH (8:15)
11	LBA_HIGH (0:7)
12	DEVICE
13	STATUS
14
15