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INTERFACE COMMANDS
7 – 11
WORD CONTENT DESCRIPTION
83 Command sets supported. If words 82, 83 and 84 = 0000h or FFFFh command set notification not
supported.
15 = shall be cleared to zero
14 = shall be set to one
13-1 = reserved
0, 1 = supports Download Microcode command
84 Command set extensions supported. If words 84, 85 and 86 = 0000h or FFFFh command set
notification not supported.
15 = shall be cleared to zero
14 = shall be set to one
13-0 = reserved
85 Command set enabled. If words 84, 85 and 86 = 0000h or FFFFh command set notification not
supported.
15, 1 = Identify Device DMA command enabled
14, 1 = NOP command enabled
13, 1 = Write Buffer command enabled
12, 1 = Read Buffer command enabled
11, 1 = Write Verify command enabled
10, 1 = Host Protected Area feature set enabled
9, 1 = Device Reset command enabled
8, 1 = Service Interrupt enabled
7, 1 = Release Interrupt enabled
6, 1 = Look Ahead enabled
5, 1 = Write Cache enabled
4, 1 = Packet command feature set enabled
3, 1 = Power Mangement feature set enabled
2, 1 = Removable feature set enabled
1, 1 = Security feature set enabled
0, 1 = SMART feature set enabled
86 Command sets enabled. If words 85, 86 and 87 = 0000h or FFFFh command set notification not
supported.
15 = shall be cleared to zero
14 = shall be set to one
13-1 = reserved
0, 1 = supports Download Microcode command
87 Command sets enabled. If words 85, 86 and 87 = 0000h or FFFFh command set notification not
supported.
15 = shall be cleared to zero
14 = shall be set to one
13-0 = reserved
88 Ultra DMA
15-11 Reserved
10 1 = Ultra DMA Mode 2 is selected
9 1 = Ultra DMA Mode 1 is selected
8 1 = Ultra DMA Mode 0 is selected
7-3 Reserved
2 1 = Ultra DMA Modes 2 and below are supported
1 1 = Ultra DMA Modes 1 and below are supported
0 = Ultra DMA Mode1 is not supported
0 1 = Ultra DMA Modes 0 is supported
0 = Ultra DMA Mode 0 is not supported
127 Reserved
128 Security Status
15-9 Reserved
8 Security Level 0 = High, 1 = Maximum
7-5 Reserved
4 1 = Security count expired
3 1 = Security frozen
2 1 = Security locked
1 1 = Security enabled
0 1 = Security supported
129-130 Reserved
131 Spin at power-up, but 0 is asserted when no spin at power-up is enabled.
132-159 Maxtor-specific (not used)
160-255 Reserved