[Coco] Re: [Color Computer] Re: USB Anyone?
dragon at aurigae.demon.co.uk
Sat Apr 16 13:00:59 EDT 2005
James Diffendaffer wrote:
> I was more interested in designing something that wouldn't require a
> device programmer or surface mount components. Easy for a hobbyist.
Well the Xilinx CPLDs are in circuit programmable, you need a programmer
that hangs off a PC paralell port and can be made fairly cheaply with
apropreate connectors and an 74HC buffer chip. Also the software to
program them is a free download. They are also available in PLCC, so can
be down without surface mount.
Problem is is the USB chip available in anything but surface mount ?
> 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.
A trick I have used to help with this is if using DIP ICs, use turned
pin sockets as they can be soldered both sides of the board.
Brought to you by the 6809, the 6803 and their cousins!
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