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266X CompactFlash Card
Transcend Information Inc.
63
command.
Bit 14 of word 85 shall be set to one; the CompactFlash Storage Card supports the NOP command.
Bit 15 of word 85 is obsolete.
Bit 0 of word 86 shall be set to zero; the CompactFlash Storage Card does not support the Download
Microcode command.
Bit 1 of word 86 shall be set to zero; the CompactFlash Storage Card does not support the Read DMA
Queued and Write DMA Queued commands.
If bit 2 of word 86 shall be set to one, the CompactFlash Storage Card supports the CFA feature set.
If bit 3 of word 86 is set to one, the Advanced Power Management feature set has been enabled via the
Set Features command.
Bit 4 of word 86 shall be set to zero; the CompactFlash Storage Card does not support the Removable
Media Status feature set.
¾ Word 88: Ultra DMA Modes Supported and Selected
Word 88 identifies the Ultra DMA transfer modes supported by the device and indicates the mode that is
currently selected. Only one DMA mode shall be selected at any given time. If an Ultra DMA mode is
selected, then no Multiword DMA mode shall be selected. If a Multiword DMA mode is selected, then no
Ultra DMA mode shall be selected. Support of this word is mandatory if Ultra DMA is supported.
Bits 15-13: Reserved
Bit 12: 1 = Ultra DMA mode 4 is selected 0 = Ultra DMA mode 4 is not selected
Bit 11: 1 = Ultra DMA mode 3 is selected 0 = Ultra DMA mode 3 is not selected
Bit 10: 1 = Ultra DMA mode 2 is selected 0 = Ultra DMA mode 2 is not selected
Bit 9: 1 = Ultra DMA mode 1 is selected 0 = Ultra DMA mode 1 is not selected
Bit 8: 1 = Ultra DMA mode 0 is selected 0 = Ultra DMA mode 0 is not selected
Bits 7-5: Reserved
Bit 4: 1 = Ultra DMA mode 4 and below are supported. Bits 0-3 Shall be set to 1.
Bit 3: 1 = Ultra DMA mode 3 and below are supported, Bits 0-2 Shall be set to 1.
Bit 2: 1 = Ultra DMA mode 2 and below are supported. Bits 0-1 Shall be set to 1.
Bit 1: 1 = Ultra DMA mode 1 and below are supported. Bit 0 Shall be set to 1.
Bit 0: 1 = Ultra DMA mode 0 is supported
¾ Word 89: Time required for Security erase unit completion
Word 89 specifies the time required for the Security Erase Unit command to complete. This command
shall be supported on CompactFlash Storage Cards that support security.
¾ Word 90: Time required for Enhanced security erase unit completion
Word 90 specifies the time required for the Enhanced Security Erase Unit command to complete.
This command shall be supported on CompactFlash Storage Cards that support security.