Maxtor 1925 - Manual (Page 50)

ATA Bus Interface and ATA Commands
Quickview 40 20/30/40GB AT 5-7
53 15-3: Reserved
2:
1 = the fields reported in word 88 are valid.
0 = the fields reported in word 88 are not valid
1:
1 = the fields reported in words (70:64) are valid.
0 = the fields reported in words (70:64) are not valid
0: Obsolete
54-58 Obsolete
59 15-9: Reserved
8: 1 = Multiple sector setting is valid
7-0: xxh = Current setting for number of sectors that shall be transferred per
interrupt on R/W Multiple command
60-61 Total number of user addressable sectors
62 Obsolete
63 15-11: Reserved
10:
1 = Multiword DMA mode 2 is selected.
0 = Multiword DMA mode 2 is not selected
9:
1 = Multiword DMA mode 1 is selected.
0 = Multiword DMA mode 1 is not selected
8:
1 = Multiword DMA mode 0 is selected.
0 = Multiword DMA mode 0 is not selected
7-3: Reserved
2: 1 = Multiword DMA mode 2 and below are supported
1: 1 = Multiword DMA mode 1 and below are supported
0: 1 = Multiword DMA mode 0 is supported
64 15-8: Reserved
7-0: PIO modes supported
65 Minimum Multiword DMA transfer cycle time per word
15-0: Cycle time in nanoseconds
66 Manufacturer’s recommended Multiword DMA transfer cycle time
15-0: Cycle time in nanoseconds
Table 5-2
Identify Drive Command Parameters
Word CONTENT DESCRIPTION