add directory docs

docs/scsi.user.txt

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+This is the user documentation for my SCSI package.
+
+As is, the SCSI package works with seagate ST-02 and ST-01 host adapters.  Also,
+the boot image is "hard wired" to an address of C8000h, as different revisions have 
+different signatures, and version 2.00 is the only one I look for right now (my other
+ST-02 is version 3.00, but that one is fried and hanging on the wall with other
+dead computer junk - so it's sort of .... inaccessable for these purposes).
+
+Note that adding another host adapter to the list of those supported represents a 
+minimal amount of code.  Consult the "real" docs if you're interested.
+
+SCSI disks are scanned for from ID 0 to ID 7, excluding the host adapter ID (typically 7).
+They are assigned to disk 0, 1, 2, etc in the order they are found.
+
+SCSI disks use major number 8, 16 minor numbers per drive, so the first hard disk
+on your system will be 8,0, partition one on that 8,1, second drive 8,16, etc.
+This is to accomodate a future sub partitioning scheme.
+
+These devices may be made with mknod /dev/sdX 8 X, where X is the minor number, as         
+specified above.
+
+Note that the scsi disks will coexist with "normal" drives in the same system - 
+IDE, MFM, whatever. 
+
+Files you might want : 
+scsi.shar.Z  - shell archive of the sources and some diffs.  Note that makefile diffs,
+	main.c diff (one call) are not there - but it basically just drops in
+	to .12.
+
+fdisk.scsi.tar.Z : patched fdisk that also deals with SCSI drives.
+
+bootimage-0.12.seagate.Z - bootable image for seagate ST-0x SCSI hosts at address C8000.
+
+
+