Re: [N8VEM-S100:3403] S-100 boards in work - uPD7220

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

Hi,

Yes, they should be $33.00 + shipping (to me then out to people) if we
go with 4pcb.com.

I can get boards for around $24.00 from pcbcart (in China) with an
eight day lead time and qty 8.  I don't have an estimate for shipping
from them though and I would guess they'll be quite a bit more than
shipping from 4pcb (and take longer to ship as well.)

I'm ready to go as soon as we know the total number of boards.

Todd

* David Fry <dgf...@googlemail.com> [140430 14:31]:
>  
>  Hi Fabio,
>  
> Andrew uses http://www.4pcb.com/33-each-pcbs/ for prototype PCB's
> So I guess the boards will come in at $33.00 each plus and shipping costs, 
> Todd Goodman has offered to handle the ordering and distribution of the 
> prototypes as keeping this side of things USA side keeps the overall price 
> of the boards down.
>  
> wrt a second PCB for me you almost had me convinced then I remembered that 
> I have to use a 10x Eye loupe these days to check the traces,
> an A2 or A1 printout will be better for me :-)
>  
> 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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