Maxtor 1925 - Manual (Page 49)

ATA Bus Interface and ATA Commands
5-6 Quickview 40 20/30/40GB AT
20-21 Retired
22 Obsolete
23-26 Firmware revision (8 ASCII characters)
27-46 Model number (40 ASCII characters)
47 15-8: 80h
7-0: 00h = Reserved
01h-FFh: = Maximum number of sectors that shall be transferred per interrupt on
READ/WRITE MULTIPLE commands
48 Reserved
49 Capabilities
15-14: Reserved for the IDENTIFY PACKET DEVICE command.
13:
1 = Standby timer values as specified in this standard are supported.
0 = Standby timer values shall be managed by the device
12: Reserved for the IDENTIFY PACKET DEVICE command.
11: 1 = IORDY supported. 0 = IORDY may be supported
10: 1 = IORDY may be disabled
9: 1 = LBA supported
8: 1 = DMA supported.
7-0: Retired
50 Capabilities
15: Shall be cleared to zero.
14: Shall be set to one.
13-2: Reserved.
1: Obsolete
0: Shall be set to one to indicate a device specific Standby timer value
minimum.
51-52 Obsolete
Table 5-2
Identify Drive Command Parameters
Word CONTENT DESCRIPTION