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Yep, 2x is probably better.
Having one handy really helps following the traces. Printing the
layout is good too, but a physical board is better.
Do we have an idea on the target price for the protos?
On 30/04/14 19:46, David Fry wrote:
Hi Dave,
I'll go to a local print shop and have A2 sized printouts
of the CAD drawings done,
are you sure you want two PCB's Dave ?
How about you Fabio ?
regards
David Fry
On Saturday, April 26, 2014 5:56:07 PM UTC+1, monahanz wrote:
I think
we need to do a prototype run on that board first.
While it contains elements of 3 previous boards we
did, it is the first time they are all put together
in one place. Also as a few of us know, we had real
problems with that BT478 chip on the VDP board (which
itself BTW needs to have another prototype run).
On the
7220 I will help out with the hardware, the thing to
remember about the 7220 is you have to do quite a bit
of software writing to get it to be of any use. Is
somebody prepared to do that. Because without software
that chip/board is useless.
John
From: n8ve...@googlegroups.com
[mailto:n8vem...@googlegroups.com]
On Behalf Of David Fry
Sent: Saturday, April 26, 2014 7:40 AM
To: n8ve...@googlegroups.com
Subject: Re: [N8VEM-S100:3295] S-100 boards in
work
Andrew has uploaded the EDA files
for the uPD7220 GDC this afternoon, if you feel
inclined to do a production run then put me down for
1 board
just for curiosity value. It
might be worth considering a smaller run of 5 to 10
boards as this board has failed to spark sufficient
interest for a production run
before. looking a previous forum
posts for the uPD7220 GDC it would appear to be a
descendant of the ECB uPD7220 graphics board
interfaced to the S100 bus and is ripe for testing.
On Friday, April 25, 2014 11:19:04 PM UTC+1, Edward
Snider wrote:
It does seem like it would be
an interesting board for an S100 system.
With almost all of the work
done it would be a shame not to go through to
completion.
Unfortunately I don't have
enough of a system together to help in
testing, but I can chip in a bit
for prototypes. I'd also
be willing to handle the production run if we
can get takers for at least
20 boards, if that would be
helpful.
On Tuesday, September 24, 2013 1:45:38 AM
UTC-5, nekonoko wrote:
Hi
Andrew,
I can definitely see chipping in at least some
of the cost. I find the uPD7220 GDC
interesting as several business class CP/M
systems used it for graphics (DEC Rainbow,
QX-10 etc.).
Thanks much,
Pete
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