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360014937
Copyright © 2000 Toshiba corporation. All rights reserved.
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581 -
WORD 62: Mode information for single word DMA
bit15- 8 Active mode
bit10 1=Mode 2 is active
bit 9 1=Mode 1 is active
bit 8 1=Mode 0 is active
bit 7- 0 Supported mode
bit 2 1=mode 2 is supported
bit 1 1=mode 1 is supported
bit 0 1=mode 0 is supported
Support bit reflects setting by SET FEATURE command.
The default value for this WORD is 0007h.
WORD 63: Mode information for multiword DMA
bit15- 8 Active mode
bit 10 1=Mode 2 is active
bit 9 1=Mode 1 is active
bit 8 1=Mode 0 is active
bit 7- 0 Supported mode
bit 2 1=mode 2 is supported
bit 1 1=mode 1 is supported
bit 0 1=mode 0 is supported
Support bit reflects setting by SET FEATURE command.
The default value for this WORD is 0407h and the default figure is mode 2
WORD 64: Mode information for Advanced PIO transfer
bit 7- 0 Supported mode
bit 1 1=mode 4 is supported
bit 0 1=mode 3 is supported
The value for this WORD is 0003h.
WORD 65: Minimum multiword DMA transfer mode cycle time per word (ns)
If this bit is supported, word 53 bit 1 shall be set. The value for this WORD is 0078h (120ns).
WORD 66: Manufacturer recommended multiword DMA transfer cycle time
If the data transfer is requested in a shorter cycle time than this definition, the data transfer may be kept
pending with DMARQ low because data is not ready. The value for this WORD is 0078h (120ns).
WORD 67: Minimum PIO transfer cycle time without flow control (ns)
The Drive can guarantee correct data transfer without flow control in this cycle time or longer. If this bit is
supported, word 53 bit 1 is to be set. The drives which support PIO mode 3 or higher shall support this field
too. This figure shall not be less than 120. The value for this WORD is 0078h (120ns).
WORD 68: Minimum PIO transfer cycle time with IORDY flow control (ns)
If this bit is supported, word 53 bit 1 is to be set. The drive that support PIO mode 3 or higher shall support
this field too. This figure shall not be less than 120. The value for this WORD is 0078h (120ns).