[Coco] Stable colours

Tue Sep 30 14:09:58 EDT 2014

I don't need RAM if a external SRAM is used but it would require to be dual
port since the read/write are in distinct clocks.

Also, I need a PLL that locks at exactly 114.5454 witch is NTSC 3.579545 x
32. Yes I need to digitize evey pixel 8 times.

Does this CPLD have LVDS ports ? I need 3 of them.

Doesn't worth buynig those instead ?

http://www.ebay.ca/itm/ALTERA-Cyclone-FPGA-Development-Board-JTAG-AS-SPI-Flash-EP1C3-Quartus-II-CPLD-/230960685109?pt=LH_DefaultDomain_0&hash=item35c6546035

It has a 30Mhz clock, not certain at this. I could check on Quartus.

Luis Felipe Antoniosi

On Tue, Sep 30, 2014 at 1:48 PM, Mark Marlette <mmarlette at frontiernet.net>
wrote:

> Luis,
>
> BGA type components require xray to verify quality. Others will say it is
> not required but IMHO, it is the only way to verify placement and joint
> quality.
>
> So that really rules out most home assembly lines.
>
> A quick look the EPM570 fits on the LEs but the 16KRAM will be a problem
> in the Altera line as I know it. Depending how this is used, external SRAM
> could replace it along with the SDRAM.
>
> 5.4nS device EPM570 w3.3v core is ~$13.33 at Digikey in a 100 pin TQFP
> package, which is easily to solder at home with the proper tooling. Go to
> the 144pin TQFP price jumps to $18.10
>
>
> Depending on pin counts, price will vary.
>
>
> Mark Marlette
> http://www.cloud9tech.com
> mark at cloud9tech.com
>
>
> ________________________________
>  From: Luis Antoniosi (CoCoDemus) <retrocanada76 at gmail.com>
> To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
> Sent: Tuesday, September 30, 2014 8:55 AM
> Subject: Re: [Coco] Stable colours
>
>
> Well if you go for a DE0-Nano it costs 80 dollars. The daugher board is
> pretty simple, 10 dollars and the components pretty available: bunch of
> resistors, a variable resistors, a small protoboard and a VGA connector and
> a stackable 40 pin header. Got everything from a local store.
>
> But it could be done on a CPLD for reduction costs. I don't have the tools
> for CPLD development, nor I don't make an idea how to solder a FBGA chip .
> Mark Marlette ? Darren A. ? Who else ?
>
> It would require a CPLD with 550 LEs, 16K bits of RAM and a external SRAM
> with 512Kbytes or a SDRAM as the Altera. For a SRAM the code must be
> changed since the DE0-Nano has only SDRAM.
>
> Don't know if that would beat the 80 dollars asked by the Altera. But Daren
> made de SDC for a 50 bucks cost. Maybe that would be a reasonable price.
>
> Luis Felipe Antoniosi
>
>
>
> On Tue, Sep 30, 2014 at 9:15 AM, Gene Heskett <gheskett at wdtv.com> wrote:
>
> > On Tuesday 30 September 2014 08:02:45 Luis Antoniosi (CoCoDemus) did
> opine
> > And Gene did reply:
> > > colours as we say in canada:
> > >
> > > https://www.youtube.com/watch?v=zSgr5dHvswM
> > >
> > > Nick Marentes will love my scanlines :)
> > >
> > >
> > >
> > > Luis Felipe Antoniosi
> >
> > Now that is pretty darned good Luis. Cost estimate?
> >
> > Cheers, Gene Heskett
> > --
> > "There are four boxes to be used in defense of liberty:
> >  soap, ballot, jury, and ammo. Please use in that order."
> > -Ed Howdershelt (Author)
> > Genes Web page <http://geneslinuxbox.net:6309/gene>
> > US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS
> >
> > --
> > Coco mailing list
> > Coco at maltedmedia.com
> > https://pairlist5.pair.net/mailman/listinfo/coco
> >
>
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