[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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