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DaynaPort SCSI/Link: SCSI Command Set
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Revision 1.20 (16 July 2005)
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# DaynaPort SCSI/Link: SCSI Command Set
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[Original version](http://www.bitsavers.org/pdf/apple/scsi/dayna/daynaPORT/SLINKCMD.TXT) Copyright 2002-2005 by Roger Burrows.
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The current version is made available under (https://creativecommons.org/licenses/by-sa/4.0/legalcode)[Creative Commons BY-SA]. For additional information, see the end of this document.
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Copyright 2002-2005 by Roger Burrows. All Rights Reserved. Permission
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is granted to copy this document providing that no changes are made to
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the contents.
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LIMITATION OF LIABILITY AND DISCLAIMER OF WARRANTY
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--------------------------------------------------
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The information cantained in this document is provided "as-is", without
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warranty of any kind, expressed or implied, including without limitation
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any warranty concerning the accuracy, adequacy, or completeness of such
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information or material. The Author shall not be responsible for any
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claims attributable to errors, omissions, or other inaccuracies in the
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information or material contained in this document, and in no event
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shall the Author be liable for direct, indirect, special, incidental,
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or consequential damages arising out of the use of such information or
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material.
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SCOPE
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-----
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# SCOPE
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This document applies to the following hardware devices:
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DaynaPort SCSI/Link-T (Model DP0801)
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DaynaPort SCSI/Link-3 (Model DP0802)
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- DaynaPort SCSI/Link-T (Model DP0801)
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- DaynaPort SCSI/Link-3 (Model DP0802)
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and to the following firmware revisions:
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1.4a
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2.0f
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It probably also applies to other firmware revisions; it may also apply
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to other Dayna SCSI/Link devices. Any feedback on this is welcomed.
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Please supply any additions or corrections to Roger Burrows
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(roger@anodynesoftware.com).
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- 1.4a
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- 2.0f
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It probably also applies to other firmware revisions; it may also apply to other Dayna SCSI/Link devices. Any feedback on this is welcomed.
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REVISION HISTORY
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----------------
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Version 1.00 (8/August/2002)
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Original version
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Version 1.10 (22/April/2005)
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Added description of 'Set Interface Mode/Set MAC Address' command
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Version 1.20 (16/July/2005)
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Corrected description of 'Set Interface Mode/Set MAC Address' command
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NOTATION
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--------
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All numbers are expressed in hexadecimal, unless otherwise noted.
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COMMAND SET SUMMARY
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-------------------
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# COMMAND SET SUMMARY
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The following is a partial list of implemented SCSI commands:
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- 03 Request Sense
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- 08 Read
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- 09 Retrieve Statistics
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- 0a Write
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- 0c Set Interface Mode / Set MAC Address
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- 0e Enable/disable Interface
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- 12 Inquiry
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03 Request Sense
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08 Read
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09 Retrieve Statistics
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0a Write
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0c Set Interface Mode / Set MAC Address
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0e Enable/disable Interface
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12 Inquiry
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A number of other SCSI commands are implemented, but their usage is not yet fully known.
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A number of other SCSI commands are implemented, but their usage is
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not yet fully known.
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Enable/disable Interface (0e)
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-----------------------------
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## Enable/disable Interface (0e)
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Command: 0e 00 00 00 00 XX (XX = 80 or 00)
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Function: Enable (80) / disable (00) Ethernet interface
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Type: No data transferred
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Notes: After issuing an Enable, the initiator should avoid sending
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any subsequent commands to the device for approximately 0.5
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seconds
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Inquiry (12)
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------------
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## Inquiry (12)
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Command: 12 00 00 00 LL 00 (LL is data length)
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Function: Perform a standard SCSI Inquiry command: reference the
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SCSI spec for further information
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Type: Input; reference the SCSI spec for the data returned
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Notes: The length is user-selectable to a maximum of 25 (37 decimal)
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Read (08)
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---------
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## Read (08)
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Command: 08 00 00 LL LL XX (LLLL is data length, XX = c0 or 80)
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Function: Read a packet at a time from the device (standard SCSI Read)
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Type: Input; the following data is returned:
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LL LL NN NN NN NN XX XX XX ... CC CC CC CC
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where:
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LLLL is normally the length of the packet (a 2-byte
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big-endian hex value), including 4 trailing bytes
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of CRC, but excluding itself and the flag field.
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See below for special values
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NNNNNNNN is a 4-byte flag field with the following meanings:
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FFFFFFFF a packet has been dropped (?); in this case
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the length field appears to be always 4000
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00000010 there are more packets currently available
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in SCSI/Link memory
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00000000 this is the last packet
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XX XX ... is the actual packet
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CCCCCCCC is the CRC
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Notes:
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. When all packets have been retrieved successfully, a length field
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of 0000 is returned; however, if a packet has been dropped, the
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SCSI/Link will instead return a non-zero length field with a flag
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of FFFFFFFF when there are no more packets available. This behaviour
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seems to continue until a disable/enable sequence has been issued.
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. The SCSI/Link apparently has about 6KB buffer space for packets.
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- When all packets have been retrieved successfully, a length field of 0000 is returned; however, if a packet has been dropped, the SCSI/Link will instead return a non-zero length field with a flag of FFFFFFFF when there are no more packets available. This behaviour seems to continue until a disable/enable sequence has been issued.
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- The SCSI/Link apparently has about 6KB buffer space for packets.
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Request Sense (03)
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------------------
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## Request Sense (03)
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Command: 03 00 00 00 00 00
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Function: Perform a standard SCSI Request Sense command
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Type: Input; reference the SCSI spec for the data returned
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Notes:
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. This command always transfers exactly 9 bytes of data (note that cdb
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byte 4 is always zero, however).
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. If the sense key is 5, the driver should reinitialise the device via
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a disable/enable sequence; otherwise, it need do nothing.
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- This command always transfers exactly 9 bytes of data (note that cdb byte 4 is always zero, however).
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- If the sense key is 5, the driver should reinitialise the device via a disable/enable sequence; otherwise, it need do nothing.
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Retrieve Statistics (09)
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------------------------
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## Retrieve Statistics (09)
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Command: 09 00 00 00 12 00
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Function: Retrieve MAC address and device statistics
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Type: Input; returns 18 (decimal) bytes of data as follows:
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. bytes 0-5: the current hardware ethernet (MAC) address
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. bytes 6-17: three long word (4-byte) counters (little-endian).
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Notes: The contents of the three longs are typically zero, and their
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usage is unclear; they are suspected to be:
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. long #1: frame alignment errors
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. long #2: CRC errors
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. long #3: frames lost
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- bytes 0-5: the current hardware ethernet (MAC) address
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- bytes 6-17: three long word (4-byte) counters (little-endian).
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Notes:
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- The contents of the three longs are typically zero, and their usage is unclear; they are suspected to be:
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- long #1: frame alignment errors
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- long #2: CRC errors
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- long #3: frames lost
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Set Interface Mode (0c)
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-----------------------
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## Set Interface Mode (0c)
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Command: 0c 00 00 00 FF 80 (FF = 08 or 04)
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Function: Allow interface to receive broadcast messages (FF = 04); the
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function of (FF = 08) is currently unknown.
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Type: No data transferred
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Notes: This command is accepted by firmware 1.4a & 2.0f, but has no
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effect on 2.0f, which is always capable of receiving broadcast
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messages. In 1.4a, once broadcast mode is set, it remains set
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until the interface is disabled.
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Set MAC Address (0c)
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--------------------
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## Set MAC Address (0c)
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Command: 0c 00 00 00 FF 40 (FF = 08 or 04)
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Function: Set MAC address
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Type: Output; overrides built-in MAC address with user-specified
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6-byte value
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Notes: This command is intended primarily for debugging/test purposes.
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Disabling the interface resets the MAC address to the built-in
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value.
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Write (0a)
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----------
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## Write (0a)
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Command: 0a 00 00 LL LL XX (LLLL is data length, XX = 80 or 00)
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Function: Write a packet at a time to the device (standard SCSI Write)
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Type: Output; the format of the data to be sent depends on the value
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of XX, as follows:
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. if XX = 00, LLLL is the packet length, and the data to be sent
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@ -178,3 +147,21 @@ Type: Output; the format of the data to be sent depends on the value
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XX XX ... is the actual packet
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========================= END OF DOCUMENT =========================
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# Document History
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The original version of this document was distributed by Roger Burrows with the following copyright information:
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``Copyright 2002-2005 by Roger Burrows. All Rights Reserved. Permission is granted to copy this document providing that no changes are made to the contents.``
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|
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``LIMITATION OF LIABILITY AND DISCLAIMER OF WARRANTY``
|
||||
|
||||
``The information cantained in this document is provided "as-is", without warranty of any kind, expressed or implied, including without limitation any warranty concerning the accuracy, adequacy, or completeness of such information or material. The Author shall not be responsible for any claims attributable to errors, omissions, or other inaccuracies in the information or material contained in this document, and in no event shall the Author be liable for direct, indirect, special, incidental, or consequential damages arising out of the use of such information or material.``
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[akuker](https://www.github.com/akuker) has contacted Roger Burrows and has received permission to modify and re-distribute this information. The Creative Commons (CC BY-SA) license is currently used to distribute this documentation.
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The original revision history of this document follows:
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- Version 1.00 (8/August/2002) Original version
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- Version 1.10 (22/April/2005) Added description of 'Set Interface Mode/Set MAC Address' command
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- Version 1.20 (16/July/2005) Corrected description of 'Set Interface Mode/Set MAC Address' command
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The current version history of this document is maintained in the RaSCSI Github Wiki at: https://github.com/akuker/RASCSI/wiki/Dayna-Port-Command-Set
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