[Coco] FPGA 63x09

[Rick Taylor]

Hmmm. I think I am wrong on it having an onboard FPGA, I'm looking at the
site now. It does appear to have a DSP coprocessor.
Still, beagle boards are neat, thought I'd throw that out there.

On Fri, Mar 27, 2009 at 10:18 PM, Rick Taylor <coder32768 at gmail.com> wrote:

> What could be done with a beagle board? I think it has a FPGA on board, but
> I may be mistaken. It has some chip for DSP at least, I believe..
> Either way if a beagle board is feasible, they are pretty cheap and all
> inclusive.
>
> http://beagleboard.org/
>
>
>
> On Fri, Mar 27, 2009 at 2:12 PM, <jdaggett at gate.net> wrote:
>
>> On 27 Mar 2009 at 12:05, Stephen Adolph wrote:
>>
>> > Great to hear there are others thinking similarly.
>> >
>> > I too prefer writing VHDL as RTL...I can only think of it in terms of
>> > creating gates that do specific things, and controlling them directly
>> > rather than through implication.
>> >
>> > In order to make sense we would want a component that costs 30$ or
>> > less I would think - are there any non-volitile FPGA (with no external
>> > config flash) that are in this range, wiht enough LUTs?  I would think
>> > we would not need a lot of LUTs to do an 8 bit CPU..
>> >
>> > Steve
>> >
>> John Kent's CPU09 compiles into a:
>>
>> XC2S300E using 2666 LUTs out of 6144.
>> XC3S200AN using 2744 LUTs out of 3584.
>> XC3S500E using 3710 LUTs out of 9312.
>>
>> The XC3S500E =4QFP208 and XCF04 combined are right at $31.
>>
>> Digilent Inc makes a development board, Nexsys2, with the XC3S500E
>> with 16Megabit Celluar RAM and 16Megabit flash, configuration flash, 8 bit
>> color VGA, USB2.0, PS2 portand RS232 all for $129. Add $40 for the
>> XC3S1200E option.
>>
>> My opinion this is the best bargain for any Coco development work.
>> Designing our own board and manufacture would be as costly if not more.
>> The major drawback is that most of the high density FPGAs are BGA parts
>> and that requires 6 or 8 layer PCBs. These don't come cheap. Look for
>> price of PCB in the $100 to $150 range. Using a QFP we can drop to 2 or 4
>> layers and a third of the cost.
>>
>> just my thoughts
>> james
>>
>>
>>
>>
>>
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>> Coco at maltedmedia.com
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>>
>
>
>
> --
> All of this machinery making modern music can still be open hearted -
> not so coldly charted; it's really just a question of your honesty.
>
> - Neil Peart, Rush, _The Spirit of Radio_
>



-- 
All of this machinery making modern music can still be open hearted -
not so coldly charted; it's really just a question of your honesty.

- Neil Peart, Rush, _The Spirit of Radio_