On 12/15/2012 12:26 PM, Holm Tiffe wrote:
On both the VME and the ISA Card is a SCN2681 used for
the SLUs.
Could you verify this on yours Dave?
I don't see a 2681 on mine. Interestingly, I don't see any
recognizable UART on mine at all. I seem to recall that the rtVAX-300
module has an onboard console UART; is that the one you're connecting to
when you interact with the ROM?
Also, in case it is of any interest, my AEON VME board also contains a
WD SCSI host adapter chip, and I have another (very thick) VME board
from the same manufacturer, that came in the same card
cage, that
contains a smallish SCSI hard drive and a floppy drive.
FYI (and for the archives), my board is model VME-300E.
According to Manx, DEC publication EK-383AA-PG is the rtVAX-300
Programmers Guide. I've not been able to find a copy online.
This page gives some specifications on the AEON VME300E board, as well
as the DEC KAV30, which seems to be a similar product;
https://mail.encompasserve.org/anon/htnotes/note?f1=INDUSTRY_NEWS&f2=55…
This seems to be some source code for an rtVAX-300 on a VME module,
from SLAC:
http://www.slac.stanford.edu/accel/ilc/codes/ATF2/control-software/epics-3.…
The one interesting thing here is map_sm.c, which is code to access
the VMEbus from the rtVAX-300. Of course this isn't relevant to your
ISA card, but I found it interesting. In its comments, it references an
object library supplied by AEON that is specific to the VME300 board.
That is somewhat discouraging.
I note that on my AEON board, the rtVAX-300 module is mounted in a
socket. Nice! I can see building a really sweet VMS laptop around
that. B-)
I need to find some time to power this up.
On your board, you've found that you've got a VAXELN system in ROM. I
wonder if it would be worth disassembling the initialization code there
to figure out how to talk to the console.
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA