README.ncr53c7xx
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- README for WarpEngine/A4000T/A4091 SCSI kernels.
- Use the following options to disable options in the SCSI driver.
- Using amiboot for example.....
- To disable Synchronous Negotiation....
- amiboot -k kernel 53c7xx=nosync:0
- To disable Disconnection....
-
- amiboot -k kernel 53c7xx=nodisconnect:0
- To disable certain SCSI devices...
- amiboot -k kernel 53c7xx=validids:0x3F
- this allows only device ID's 0,1,2,3,4 and 5 for linux to handle.
- (this is a bitmasked field - i.e. each bit represents a SCSI ID)
- These commands work on a per controller basis and use the option 'next' to
- move to the next controller in the system.
- e.g.
- amiboot -k kernel 53c7xx=nodisconnect:0,next,nosync:0
- this uses No Disconnection on the first controller and Asynchronous
- SCSI on the second controller.
- Known Issues:
- Two devices are known not to function with the default settings of using
- synchronous SCSI. These are the Archive Viper 150 Tape Drive and the
- SyQuest SQ555 removeable hard drive. When using these devices on a controller
- use the 'nosync:0' option.
- Please try these options and post any problems/successes to me.
- Alan Hourihane <alanh@fairlite.demon.co.uk>