[sdiy] Programmable Logic?

James Patchell patchell at cox.net
Tue Jul 20 02:25:44 CEST 2004


I got a Spartan 3 Eval board for $175, has the equiv of 400K gates, which 
is probably more gates than anybody can imagine.  I estimate one could 
easily put 1024 sine wave oscilators in that thing with a sample rate of at 
least 96KHz, if not 192KHz....

This stuff is powerful....

At 10:00 PM 7/19/2004 +0200, ASSI wrote:
>On Montag, 19. Juli 2004 01:11, Ryan Williams wrote:
> > It's time for me to get started with digital design. Does anyone have
> > any reccomendation for devices to use? I'm looking for two different
> > types. one should be a simple small device (preferably in dip
> > package) that would have a few hundred gates I guess (maybe more),
> > and I want to start with a deccent FPGA soon also. I've been learning
> > Verilog a little so I want to stick with that for now. that first
> > type of device I want is just for small designs that may be better to
> > put it on a chip then use several digital ICs. They would be
> > sequential circuits.
>
>The only thing still available in DIP packages is PALs (22V10 and
>friends). As they need a programmer and the density is on the low side
>of your requirements, I'd recommend going straight to CPLD (like Altera
>MAX) or FPGA. Starter kits for both are going cheap (sometimes for
>~$40, commonly for <$100), development software for the smaller parts
>is generally free (well, a download...) - make sure you don't need any
>special download cables and /or programmers on top of the kit. If <ou
>need to interface to TTL and want the configuration to stick, CPLD is
>the way to go. FPGA have gone to lower I/O voltages, but there's a much
>better chance you won't need any external circuitry. Also as most of
>them are SRAM based, you will need to provide the configuration
>bitstream when you start using them outside the development system.
>
>
>Achim.
>--
>+<[Q+ Matrix-12 WAVE#46 microQkb/Omega Andromeda XTk/30 sonic heaven]>+
>
>Q series MIDI Implementation & additional documentation:
>http://homepages.compuserve.de/Stromeko#WaldorfQDocs

         -Jim
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