On Nov 11, 2011, at 6:29 AM, Rod Smallwood wrote:
Sounds wonderful.
I have a few questions. The only interfaces seem to be serial lines. I take
it that any DEC peripheral that is connected via a serial line could
possibly be supported.
Other than the serial lines are there any plans to produce an interface to
any of the standard DEC PDP-11 busses ie Uni and Q22?
That's simple enough from a logic standpoint, but I've had trouble finding
suitable driver/receiver chips for DEC's old buses. The old driver chips just
aren't made anymore, and NOS is an expensive and spotty solution. If anyone is
looking for some suggestions, a number of them have been raised, but I've never had
the time/money to make any boards to try them out.
An Ethernet port (co-ax or UTP) would be nice.
Not a bad idea; I toyed with this idea for my generic peripheral board as well. You'd
have to make something that emulates the Ethernet boards (most of which were running
embedded processors; my DELQA, at least, has a 10MHz 68000 that's slightly more
powerful than the 11/23+ it's in) and then pass it off to AUI or a PHY of some sort.
If I ever get my act (and the money) together to make my board, it'll at least have
that.
This is great news, though! I'm excited to give it a shot. I'm so glad you
targeted the DE1, because I have two of them. :-)
- Dave