On Wed, 24 Oct 2012 15:50:12 +0100, "Gareth Magennis"
wrote:

Hi,

I know I'm probably missing something really obvious but am not having much
luck with Google on this one.


I bought this kit some time ago:
http://www.matrixmultimedia.com/reso...EB194-30-2.pdf

It works fine with a Mega423P, but the 20-pin socket will not work for me.

This 20-pin socket is wired as on the link above:

+5v pin 5/15
Gnd pin 6/16

MOSI pin1
MISO pin2
SCK pin3
RST pin 10


This does not agree with a typical Atmel 20 pin uC - I would like to use the
Tiny2313, which this board allegedly supports, but it can't do as
MOSI/MISO/SCK are pins 17/18/19.
http://www.atmel.com/Images/doc8246.pdf


I tried Googling to find out which uC's DO use this boards' pin
configuration but got nowhere and frustrated.

I usually learn a lot more posting on usenet than Googling anyway, hence my
post here.

This doesn't answer which *do* use the pins shown but it looks like if
you use the header J3 ("40P") then the ISP signals get routed to the
proper pins (19:SCK, 18:MISO, 17:MOSI) on the 20-pin socket. Do a
continuity check with nothing plugged in first, of course.

--
Rich Webb Norfolk, VA