22 Jun
2010
22 Jun
'10
4:24 p.m.
"RodSmallwood" <rodsmallwood at btconnect.com> wrote:
How difficult would it be to extend one of these FGPA
PDP-11's to be put on
a quad DEC board and be a plug in replacement for say an 11/93 or 11/94 CPU.
(M8981-AA OR 11/91-BA)?
You would need to implement the whole bus arbitration and protocol
logic. And hook that up to the cpu. But that should be it.
Not sure how difficult it would be. DEC had a pretty big chip that did
all of that from the J11.
Johnny
23 Jun
23 Jun
11:15 a.m.
Thanks for the reply.
It's worth considering
The real CPU boards are a ridiculous price ($5000)
Rod
-----Original Message-----
From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org]
On Behalf Of Johnny Billquist
Sent: 23 June 2010 00:25
To: cctalk at classiccmp.org
Subject: Re: yet another pdp-11 in fgpa
"RodSmallwood" <rodsmallwood at btconnect.com> wrote:
How difficult would it be to extend one of these FGPA
PDP-11's to be put
on
a quad DEC board and be a plug in replacement for say
an 11/93 or 11/94
CPU.
(M8981-AA OR 11/91-BA)?
You would need to implement the whole bus arbitration and protocol
logic. And hook that up to the cpu. But that should be it.
Not sure how difficult it would be. DEC had a pretty big chip that did
all of that from the J11.
Johnny
5249
days inactive
5250
days old
1 comments
2 participants
participants (2)
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