[Coco] 65k colours serial VGA module

[John Kent]

You could probably use those.

The DE1 board has a EP2C20 FPGA where as those boards have EP2C8 and 
EP2C5 which are much smaller. I don't think they would be big enough for 
Gary's CoCo3FPGA. I'm guessing they'd be comparable in size to the 
XC3S200A.

Some of the boards only have SDRAM. You'd have to have SDRAM controller 
IP. Mark pointed me to an SDRAM controller for the DE1 board, so maybe 
that could be adapted to those boards. They might even be using the same 
SDRAM as on the DE1 board.

I should declare my interests: I was given a free XuLA board. The FPGA 
was a similar size to the 200K gate version of the Digilent Spartan 3 
starter board so I thought I'd see if I could fit my 6809 design into 
it, which I did. XESS provide a free SDRAM controller for their boards. 
The XuLA board uses the same SDRAM controller as their XSA-3S1000 board, 
although I had to make a few changes because they combined some signals 
and eliminated a couple of signals because of the limitations of the 
FPGA size.

The main advantage of the XuLA board is that it is mounted on a board 
comparable in size to a DIP40 package, so can be mounted on a carrier 
board. I thought if people were going to have a plug in board on a bus 
expander it could be mounted as a daughter board on that.

I don't have any preference for Xilinx or Altera although I have been 
using Xilinx longer than I have been using Altera. When I worked at the 
CSIRO they used Xilinx. The university I studied at preferred Altera. 
Altera I think might be preferred in universities because of their 
university program that offers better academic discounts than Xilinx.

John.

On 23/05/2012 12:58 AM, Louis Ciotti wrote:
> What about some of the Cyclone II offerings on e-bay:
>
> http://www.ebay.com/itm/New-EP2C8Q208C8N-Development-Board-kit-FPGA-Altera-Cyclone-NIOS-II-with-2-4-LCD-/261002182781?pt=BI_Electrical_Equipment_Tools&hash=item3cc4f1407d
>
> http://www.ebay.com/itm/New-EP2C8Q208C8N-Development-Board-kit-FPGA-Altera-Cyclone-NIOS-II-with-2-4-LCD-/280862676371?pt=BI_Electrical_Equipment_Tools&hash=item4164b85593
>
> http://www.ebay.com/itm/High-quality-Altera-Tiny-Cyclone-II-FPGA-EP2C5Q208C8N-board-/251067284237?pt=LH_DefaultDomain_0&hash=item3a74c6bb0d
>
>
>
> On Tue, May 22, 2012 at 10:49 AM, Frank Pittel<fwp at deepthought.com>  wrote:
>> It's been a while since I've checked pricing but as memory serves the price from
>> Terasic was lower then digikey but when you add in the price of shipping it was
>> a wash and either way the delivered price was ~$200. A bit steep.
>>
>> The Other Frank
>>
>>

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