Software to handle Strange SCSI disks

The programs here can be built to give zrdriver and zridehost
(at least on alpha). ZRdriver gets connected first with sysman io connect
and you then run zridehost to point at it and at some not-very-scsi
disk.

$set command zridehost
$zridehost zra0: dkb3:  (or whatever...can be a gk device too.)

This is preferably done in a batch job since zridehost must stay
active.

Now zra0: will come online and will act like a normal disk, even
if the disk is an IDE disk seen via an Alcita IDEplex board (a really
nice thing to have !) or a CD or the like that uses blocksize of
other than 512 bytes.  Very minimal SCSI facilities are needed...if
the disk will tell the system how many blocks it has, start up,
respond to test unit ready, and read and write, this beastie will
let you use it.

A couple other clients are present too...remote virtual disk over
decnet, and encrypting virtual disk on a file. (The encryption is
NOT meant to foil NSA type folks...it is meant to avoid casual
inspection of whatever is in there. You can edit the sources and
add other crypto if you want. The algorithm here is pretty fast
though so your machine can be doing work other than encryption.)


The Alcita board is really a handy gadget...takes one SCSI ID
and gives you 8 IDE busses on which you can hang CD or regular
disks. Doesn't work for CD-R but is said to work for CD-RW. I
have used it for (big, cheap) disks. I have a modified dkdriver
for it, but that code isn't for me to distribute...Compaq has
it already if they feel like putting it into the stock dkdriver.
Glenn Everhart