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4.5 ATA Commands
C156-E227-01EN 4-29
Table 4.19 Device parameter information (5/5)
Word Value Bits Description
87 4000h Command set supported and whether the function is enabled or
disabled
(A value of less than 1 indicates that the command is
supported and enabled.)
15 0b
14 1b
13-0 Reserved
88 0007h 15-0 Ultra DMA transfer mode is active.
(Default value) 15-11 Reserved (0b)
10 Indicates 1 if mode 2 is selected.
9 Indicates 1 if mode 1 is selected.
8 Indicates 1 if mode 0 is selected.
Ultra DMA transfer mode is supported.
7-3 Reserved (0b)
2 Mode 2 (1b)
1 Mode 1 (1b)
0 Mode 0 (1b)
89-126 0000h Reserved
127 0001h 15-9 Reserved
8 Device protect
Indicates 1 in the device-protect state.
See Section 4.6.5.6, "Timer & Protect Page."
7-2 Reserved
1-0 Media status notification function is supported (01b).
128-255 0000h Reserved (0b)