	Spartan driver source distribution V34.4 (true SCSI version)
	------------------------------------------------------------

	--------------------------------------------------------------------
	IMPORTANT:
	This version (as opposed to the 34.3 version) takes the SCSI 
	return status in account on normal disk read/write operations. 
	This makes it possible for the driver to detect disk read/write
	errors.
	Only true SCSI disks are supported. This driver will *NOT* work 
	with (older) adaptec cards. If you have an adaptec, use the
	generic 34.3 version.
	--------------------------------------------------------------------

These are the sources to the Spartan PD scsi interface driver for Amiga 500
and Amiga 1000 by Paul Harker. This is an enchanced true SCSI version that 
includes:

* A major bugfix.
  The original driver had problems with concurrent accesses.
  These problems may show up for instance if you try to copy large files 
  between partitions, or simultaneously access files on different partitions.
  The symptom is that the hd hangs (sometimes with the drive light staying on).
  As a result of this the partition sometimes gets corrupted.
  Fix made by Tatsuo Miyachi (miyachi@ipe.rdc.ricoh.co.jp)

* SCSI-Direct support
  Many PD and other software uses the SCSI-Direct interface to obtain 
  information about the units connected to the scsi-bus (such as SysInfo,
  SCSIUtil and SCSI_Lister, all to be found in the Fred Fish collection).
  SCSI-Direct also makes it possible for you to add other things than hd:s 
  on your scsi-bus. The BTNtape (also Fred Fish) scsi tape drive device
  handler allows you to use a tape streamer. 
  Fix made by Hakan Lennestal (hakanl@lulea.trab.se)

KNOWN BUGS
  The following fields in the SCSICmd structure are currently ignored
  by the driver:
	scsi_CmdLength
	scsi_CmdActual
	scsi_Flags
	scsi_SenseData
	scsi_SenseLength
	scsi_SenseActual

WARNING
  Do *NOT* use the original SetBase command to change the base address of
  the driver. A new SetBase command (SetBase2.4) is supplied for this purpose.
  The default address is 'F7'.
  Please observe that SetBase will not work if the driver is
  reassembled/relinked. In this case change the NCR and DMA defines
  directly in the file scsi.i.

BUILDING A NEW DRIVER
  First obtain an assembler and a linker.
  You do also need the Amiga system assembler header files and "amiga.lib"
  This is how to do with the "a68k" PD assembler and the PD linker "dlink":
	a68k mydev.asm -iUtils:asm
	a68k rdwt.asm -iUtils:asm
	a68k DirectCmd.asm -iUtils:asm
	dlink mydev.o rdwt.o DirectCmd.o Utils:lib/amiga.lib -o spartan.device

  Utils:asm points to the directory where the system header files are. 


Good luck!

  o           o
/Hakan Lennestal
