[Coco] [Color Computer] Re: USB Anyone?

[James Diffendaffer]

I was more interested in designing something that wouldn't require a
device programmer or surface mount components.  Easy for a hobbyist.

I'm pretty sure I can squeeze it in a standard ROM pack.  I can always
use a jumper wire or two to keep it on a 2 layer board... but I don't
think I'll need it.



--- In ColorComputer at yahoogroups.com, "j_e_daggett" <j_e_daggett at y...>
wrote:
> 
> James
> 
>  The Xilinx XCR3032XL-10VQC44C is a 32 macrocell CPLD that is in a 44
> VQFP package and commercial temperature grade. It has 10 nS pin to pin
> delay and is $1.70 unit price from Xilinx online store. Also can be
> Avnet has them for $1.87 unit price.
> 
> By the time you scrounge and find a 74LS30, 74LS00s, and 74LS04s, you
> are going to have near a buck invested already. Even if y ou went
> surface mou nted you are not going to get the circuit in as small a
> board as I  have now. 
> 
> I have traded component cost for reduce PCB cost. The smaller the
> actual  board the cheaper your PCB cost will be. 
> 
> james 
> 





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