Re: [N8VEM-S100:3406] S-100 boards in work - uPD7220

[Fabio Battaglia <hkzl...@gmail.com>]

I confirm mine 2. I'm not in a hurry as I'm quite busy these weeks.

On 30/04/14 21:35, Todd Goodman wrote:
> 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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-- 
Dott. Fabio Battaglia