19 Jan
2022
19 Jan
'22
11:15 a.m.
And just to close the loop on the original documentation request--
someone has come forward with the exact manual for the M68MM01A2 board
and I very much appreciate that.
He has a lot of Exorciser boards and manuals to scan so I will let him
step forward when he's ready for that. But I do greatly appreciate
getting this manual.
I think Jos' TEK_BB SBC will be the winning solution and thanks to Jos
for sharing it and Jonathan for running with it. This way many people can
run Altair 680 or SWTPC 6800 code on a small footprint development board.
Chris
On Wednesday (01/19/2022 at 01:25PM -0500), Todd Goodman via cctalk wrote:
Excellent information Jonathan!
I generally carry the s100computers and many RetroBrew board and have
ordered over 5000 boards from PCBCart.com
I'm not a board designer but if people have any questions about PCB Cart and
the board ordering process, feel free to contact me privately.
Todd
On 1/19/2022 1:14 PM, Jonathan Chapman via cctalk wrote:
> Mike,
>
> We use PCB Cart for boards with hard gold edge contacts, like our DEC prototyping
board, Apple II protoboard, XT-IDE, etc. They are the same Chinese board house used by
s100computers.com and N8VEM/RetroBrew Computers. Results are pretty good for the price.
>
> Expect to order 25 to make hard gold edge plating worthwhile. It'll pretty much
double the price of the board, but PCB Cart does proper selective hard gold, not
"heavy ENIG" (not a thing) or some other nonsense. A lot of the cheaper places
will only plate "hard gold" over ENIG, which I assume means they don't
actually have a selective process at all.
>
> Make sure to specify an edge chamfer if it's a typical card edge connector,
otherwise it'll be routed square and a little difficult to insert/you'll have to
dress it down with a file.
>
> If practical for the board, remove unused contacts from the edge connector. They
charge per-contact as a way to guesstimate their gold costs.
>
> Thanks,
> Jonathan
>
> ??????? Original Message ???????
>
> On Wednesday, January 19th, 2022 at 12:05, Mike Katz via cctalk <cctalk at
classiccmp.org> wrote:
>
> > Johnathan,
> >
> > I saw you will be ordering boards pretty soon.
> >
> > I need to order some boards for my PDP-8/E but I've never ordered boards
> >
> > before.
> >
> > What board house do you use? Have you ever specified gold fingers before?
> >
> > Any advice would be greatly appreciated.
> >
> > Thanks,
> >
> > Mike
> >
> > +1 (773) 414-1044
> >
> > On 1/19/2022 9:49 AM, Jonathan Chapman via cctalk wrote:
> >
> > > Chris,
> > >
> > > I'm probably going to order some of these on my next circuit board
order (this week or next), do you want a set of them? Seems they are of course
"hacking required," which is fine by me :P
> > >
> > > Thanks,
> > >
> > > Jonathan
> > >
> > > ??????? Original Message ???????
> > >
> > > On Wednesday, January 19th, 2022 at 10:24, Chris Elmquist via cctalk
cctalk at classiccmp.org wrote:
> > >
> > > > On Wednesday (01/19/2022 at 03:35PM +0100), Jos Dreesen via cctalk
wrote:
> > > >
> > > > > On 19.01.22 13:15, Jonathan Chapman via cctalk wrote:
> > > > >
> > > > > > That's a neat board! Where can I/we order one?
> > > > > >
> > > > > > With me...
> > > > > 20 Eur for the set of 2 + shipping.
> > > > >
> > > > > If you are in the US it is probably cheaper to order new ones
locally.
> > > > >
> > > > > Note that I never completed the documentation or wrote the code
for the hex keyboard.
> > > > >
> > > > > But it does run the Tektronix board-bucket BASIC via serial port
!
> > > > >
> > > > > Find more on ftp://ftp.dreesen.ch/TEK_BB
> > > > >
> > > > > ah ha! that's what I was looking for. Will check it out in
detail.
> > > > I think I am "forum challenged" as all I could see at the
original link
> > > >
> > > > were renderings of the board.
> > > >
> > > > Thanks Jos. Maybe this will be the ticket...
> > > >
> > > > Chris
> > > >
> > > > Chris Elmquist
--
Chris Elmquist