Emulex board question - test-drb@ccmp.vtda.org

4 May 1999

--- emanuel stiebler &lt;emu(a)ecubics.com&gt; wrote:
...
  On May 3,
20:49, John Lawson wrote:

>   Anyway..  this particular Emulex Unibus board has the model number
> SCO210101-CXL  sub number 4039 H.  The abovementioned website lists
> a part number of SCO2 as a "Unibus Disk Controller"  
 Nope, it is a Q-Bus ...

 think you mean one
 60-pin and two 26-pin (not 36) connectors.  There
are several versions of
the firmware for SC02s, emulating different DEC drives.  
 Emulates RL01 & RL02, or better said the RLV11/RLV12 controller. On bigger
 disks, the controller maps up to four logcal units per disk

 BTW, if anybody know where to get some of the disks, that fits to this
 controller, i would be interested ... 
The disks you are looking for are SMD disks - 60 pin digital cable for all
drives, 26-pin data cable for each drive.  Yours must support two physical
units. 

I have used 14" (RA-81-sized) disks like the Fujitsu Eagle and have seen 5.25"
disks, but never used them.  I know that SMD disks are available in the 600Mb
range.  I don't know how small they get.  I can't imagine how you'd map 
hundreds of megabytes into several dozen RL02 images, but in the interest of
compatibility, I guess they'd have to do it.

On VAXen and PDP-11's, I've always used a Systems Industries 9900 controller
to attach Fuji Eagles (and some other sizes) to the Massbus.  I have an SI
Q-bus controller that appears to talk to the 9900 (dual 40-pin connectors),
but I've never used it.  I have KDA-50's now (and wish I had docs for the
CS-21 SCSI card).

Bottom line - SMD disks are hard to find, but they are out there.

-ethan

_________________________________________________________
Do You Yahoo!?
Get your free @yahoo.com address at http://mail.yahoo.com