Re: [N8VEM-S100:3436] S-100 boards in work - uPD7220

[Todd Goodman <t...@bonedaddy.net>]

Hi David,

Yes, there has been crossover in the posts (sorry, I should really scan
ahead before replying.)

I was going to order ten boards in any case and hold onto the extras
myself (so no need for anyone else to get more than they've indicated
already.)

I'm happy ordering from either place myself too so will scan through my
email and see what you've all decided.

Thanks!

Todd

* David Fry <dgf...@googlemail.com> [140501 07:55]:
> Hi Todd,
>  
> there's been a little cross over in the posts, If you look back a couple of 
> post's Andrew mentioned that he has used PCBcart for orders of 10 PCB's on 
> other prototype runs.
>  
> The consensus last night was to go with 4pcb.com but in light of Andrews 
> 'endorsement' of PCBcart I thought It worth throwing out the question to 
> Dave and Fabio one more time before you process the order.
>  
> I'm happy either way I just want a reliable board, if we go 4pcb.com then 
> my order number stands (at 1 pcb) but if we go with PCBcart then I will 
> take another pcb (2 pcbs total) to help spread the cost, delivery time is 
> not an issue to me particularly just want to keep the ball rolling till the 
> order is placed :-)
>  
> 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 <javascript:> [mailto:
> > n8ve...@googlegroups.com <javascript:>] *On Behalf Of *David Fry
> > *Sent:* Saturday, April 26, 2014 7:40 AM
> > *To:* n8ve...@googlegroups.com <javascript:>
> > *Subject:* Re: [N8VEM-S100:3295] S-100 boards in work
> >
> >  
> >  
> > Hi Ed,
> >  
> >  
> >  
> > 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.
> >  
> >  
> >  
> >
> > https://groups.google.com/forum/#!searchin/n8vem-s100/upd7220/n8vem-s100/KNTuzzAdKbU/XIY-yZTK4dUJ
> >  
> >  
> >  
> > Regards
> >  
> >  
> >  
> > David Fry
> >  
> >
> > 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.
> >  
> >  
> >  
> > Ed
> >  
> >  
> >  
> >
> > 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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