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INTERFACE COMMANDS
7 – 9
Initialization Commands
Identify Drive
Allows the host to receive parameter information from the drive.
When the command is received, the drive:
1. Sets BSY,
2. Stores the required parameter information in the sector buffer,
3. Sets the DRQ bit and
4. Generates an interrupt.
The host may then read the information out of the sector buffer. Parameter words in the buffer follow.
Note that all reserved bits or words should be zeroes.
DROWNOITPIRCSEDTNETNOC
0noitarugifnoclareneG
)IPATA=1,ATA=0(ecived=51
desuton=8-41
atadaidemelbavomer=1,7
ecivedro/dnarellortnocelbavomerton=1,6
devreser=1-5
0
1srednilycforebmuN
2devreseR
3sdaehlacigolforebmuN
5-4desutoN
6kcartrepsrotceslacigolforebmuN
9-7desutoN
91-01)sretcarahcIICSA04(rebmunlairesevirD
02desutoN
12)deificepston=h0000(stnemercnietyb215niezisreffuB
22 sdnammocgnoLetirW/daeRnoelbaliavasetybcificepsrotxaMforebmuN
62-32)sretcarahcIICSA8(noisivererawmriF
64-72)sretcarahcIICSA04(rebmunledoM
74 sdnammocelpitlumetirwdnadaernotpurretnirepderrefsnartebnactahtsrotcesforebmunmumixaM
84devreseR
94seitilibapaC
devreser=41-51
)cificepsrotxaMeraseulav=0,detroppuseradradnatssihtnideificepssaseulav=1(remitybdnats=31
)troppusedomOIPdecnavda(devreser=21
detroppusebyamYDROI=0,detroppusYDROI=1,11
delbasidebnacYDROI=1,01
devreser=8-9
desuton=0-7