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Bit 1
Bit 0
1 = Supports non-zero buffer offsets enabled
Shall be cleared to zero
6.7.29 Words 82-84: Features/command sets supported
Words 82, 83, and 84 shall indicate features/command sets supported. The value 0000h or FFFFh was placed in
each of these words by Drives prior to ATA-3 and shall be interpreted by the host as meaning that
features/command sets supported are not indicated. Bits 1 through 13 of word 83 and bits 0 through 13 of word
84 are reserved. Bit 14 of word 83 and word 84 shall be set to one and bit 15 of word 83 and word 84 shall be
cleared to zero to provide indication that the features/command sets supported words are valid. The values in
these words should not be depended on by host implementers.
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Bit 0 of word 82 shall be set to zero; the SMART feature set is not supported.
If bit 1 of word 82 is set to one, the Security Mode feature set is supported.
Bit 2 of word 82 shall be set to zero; the Removable Media feature set is not supported.
Bit 3 of word 82 shall be set to one; the Power Management feature set is supported.
Bit 4 of word 82 shall be set to zero; the Packet Command feature set is not supported.
If bit 5 of word 82 is set to one, write cache is supported.
If bit 6 of word 82 is set to one, look-ahead is supported.
Bit 7 of word 82 shall be set to zero; release interrupt is not supported.
Bit 8 of word 82 shall be set to zero; Service interrupt is not supported.
Bit 9 of word 82 shall be set to zero; the Device Reset command is not supported.
Bit 10 of word 82 shall be set to zero; the Host Protected Area feature set is not supported.
Bit 11 of word 82 is obsolete.
Bit 12 of word 82 shall be set to one; the Drive supports the Write Buffer command.
Bit 13 of word 82 shall be set to one; the Drive supports the Read Buffer command.
Bit 14 of word 82 shall be set to one; the Drive supports the NOP command.
Bit 15 of word 82 is obsolete.
Bit 0 of word 83 shall be set to zero; the Drive does not support the Download Microcode command.
Bit 1 of word 83 shall be set to zero; the Drive does not support the Read DMA Queued and Write DMA
Queued commands.
Bit 2 of word 83 shall be set to zero; the Drive does not support the CFA feature set.
If bit 3 of word 83 is set to one, the Drive supports the Advanced Power Management feature set.
Bit 4 of word 83 shall be set to zero; the Drive does not support the Removable Media Status feature set.
6.7.30 Words 85-87: Features/command sets enabled
Words 85, 86, and 87 shall indicate features/command sets enabled. The value 0000h or FFFFh was placed in
each of these words by Drives prior to ATA-4 and shall be interpreted by the host as meaning that
features/command sets enabled are not indicated. Bits 1 through 15 of word 86 are reserved. Bits 0-13 of word
87 are reserved. Bit 14 of word 87 shall be set to one and bit 15 of word 87 shall be cleared to zero to provide
indication that the features/command sets enabled words are valid. The values in these words should not be
depended on by host implementers.
? Bit 0 of word 85 shall be set to zero; the SMART feature set is not enabled.
? If bit 1 of word 85 is set to one, the Security Mode feature set has been enabled via the Security
? Set Password command.
? Bit 2 of word 85 shall be set to zero; the Removable Media feature set is not supported.
? Bit 3 of word 85 shall be set to one; the Power Management feature set is supported.
? Bit 4 of word 85 shall be set to zero; the Packet Command feature set is not enabled.
? If bit 5 of word 85 is set to one, write cache is enabled.
? If bit 6 of word 85 is set to one, look-ahead is enabled.
? Bit 7 of word 85 shall be set to zero; release interrupt is not enabled.
? Bit 8 of word 85 shall be set to zero; Service interrupt is not enabled.
? Bit 9 of word 85 shall be set to zero; the Device Reset command is not supported.
? Bit 10 of word 85 shall be set to zero; the Host Protected Area feature set is not supported.
? Bit 11 of word 85 is obsolete.
? Bit 12 of word 85 shall be set to one; the Drive supports the Write Buffer command.
? Bit 13 of word 85 shall be set to one; the Drive supports the Read Buffer command.
Swissbit AG
Industriestrasse 4
Swissbit reserves the right to change products or specifications without notice.
Revision: 0.92
CH-9552 Bronschhofen
Switzerland
www.swissbit.com
industrial@swissbit.com
F-240_data_sheet_CA-HxBV_Rev092.doc
Page 23 of 56
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