18 May
2017
18 May
'17
12:14 p.m.
On 5/18/17 1:53 PM, jim stephens via cctalk wrote:
On 5/18/2017 9:51 AM, Adrian Stoness via cctalk wrote:
Actually a 11/23 with RQDX (or scsi) hard disks can be one paltry BA23
and fairly
low total power needs. I have such a beast, MicroPDP-11, 11/23+, 4MB ram,
RQDX3 with RD52(31mb), RX33(5.25 two side floppy). Its small and has
the pedestal
case to it is in the corner of a bedroom with a VT320 ( and I think
still I have a DF03).
Sucks down about the same power as an old 486 loaded tower with about
the same
disks (around 160-300W). Qbus machine help with that. One with an
11/73 board
would be fast.
A larger machine with Rk, RL or RM drives will be power hungry.
IF VAX based, a 3100 or related series would do that with minimal pain.
Older boxen like 11/34 or 11/40 are going to suck down watts and need AC.
Allison
So a 11/03 aka a lsi11 would be to slow for such
things? Such as those
Heathkit h11 lsi11 macheans? Witch was a hobyist pdp11 for those that
are
unfamiliar with the hearhkits
My take and extension on Chuck's and Allison's question is that you
can take a USB R232 dongle, and a 56k modem (if your pots line still
supports it, 33k if not (hopefully), and run a BBS on a Raspberry Pi
if nothing else for nothing in power and infrastructure cost.
An 11 is novel, but hard to see why running it on simh wouldn't be a
better deal if you want something on the pdp11 architecture.
Keeping any PDP11 up 24 / 7 so it is a useful BBS isn't an undertaking
for the faint hearted, nor is it something easy on the pocketbook in
the way of power. (not to mention space possibly).
Unless you are a couple of well known museums and
others very few do
the real hardware.
thanks
Jim
On May 18, 2017 11:45 AM, "Chuck Guzis via cctalk"
<cctalk at classiccmp.org>
wrote:
On 05/18/2017 08:16 AM, allison via cctalk
wrote:
The real question is why BBS? What is it trying
to fix or enable?
You put the words into my mouth. Thank you.
--Chuck