ATA Bus Interface and ATA Commands
5-14
Quickview 300
80/100/120/160/200/250/300GB PATA
93
Hardware reset result. The contents of bits (12:0) of this word shall change only
during the execution of a hardware reset
15:
Shall be cleared to zero.
14:
Shall be set to one.
13:
1 = device detected CBLID- above ViH. 0 = device detected CBLID- below
ViL
12-8:
Device 1 hardware reset result. Device 0 shall clear these bits to zero.
Device shall set these bits as follows:
12:
Reserved.
11:
0 = Device 1 did not assert PDIAG-.
1 = Device 1 asserted PDIAG-.
10-9:
These bits indicate how Device 1 determined the device number:
00 = Reserved.
01 = a jumper was used.
10 = the CSEL signal was used.
11 = some other method was used or the method is unknown.
8:
Shall be set to one.
7-0:
Device 0 hardware reset result. Device 1 shall clear these bits to zero.
Device shall set these bits as follows:
7:
Reserved.
6:
0 = Device 0 does not respond when Device 1 is selected.
1 = Device 0 responds when Device 1 is selected.
5:
0 = Device 0 did not detect the assertion of DASP-.
1 = Device 0 detected the assertion of DASP-
4:
0 = Device 0 did not detect the assertion of PDIAG-.
1 = Device 0 detected the assertion of PDIAG-.
3:
0 = Device 0 failed diagnostics.
1 = Device 0 passed diagnostics.
2-1:
These bits indicate how Device 0 determined the device number:
00 = Reserved.
01 = a jumper was used.
10 = the CSEL signal was used.
11 = some other method was used or the method is unknown.
0:
Shall be set to one.
Table 5-2
Identify Drive Command Parameters
Word
CONTENT DESCRIPTION
