SCSI Controller Reset Packet | 7 |
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SCSI Controller Reset Packet
This function sends a bus device reset message ($0C) to the controller specified in the packet. All outstanding packets are returned with a "reset status" ($0A). This command affects only the specified controller. After the controller reset command, the user has to send an "attach" command to SCSI firmware in order to interface with the controller again because the specified controller attach table entry is cleared.
Note
Some controllers do not support this message; the results are unpredictable unless the controller supports the controller reset message ($0C).
Erase Packet
The erase command ($19) erases the entire tape in the specified drive. All tracks are erased in one forward motion; the tape then rewinds and is positioned at the BOT.
The tape must be positioned at BOT before this command is issued. An attempt to erase a tape not at BOT results in an illegal request ($xx25) status.
The table below shows the erase packet.
Even Byte \
Odd Byte \
| FC |
| B8 |
| 74 |
|
| 30 |
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+$00 |
| Controller LUN |
|
|
| Device LUN | ||
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|
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| |||
+$02 |
| Status Byte 0 |
|
| Status Byte 1 (Note 1) | |||
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|
|
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+$04 |
| 0 |
| 0 |
| 0 |
| 0 |
|
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+$06 |
| 0 |
| 0 |
| 0 |
| 0 |
|
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|
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+$08 |
| 0 |
| 0 |
| 0 |
| 0 |
|
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+$0A |
| 0 |
| 0 |
| 0 |
| 0 |
|
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+$0C |
| 0 |
| 0 |
| 0 |
| 0 |
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+$0E |
| 0 |
| 0 |
| 0 |
| 0 |
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+$10 |
| 0 |
| 0 |
| 0 |
| 0 |
|
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