Re: YAM modems at higher (shared) IRQ's

["Curt, WE7U" <curt.we7u@xxxxxxxxx>]

On Sat, 12 Mar 2011, Ray Wells wrote:

> Have sent you some YAM files I've collected over the years. Have other 
> documentation in hard copy format including connections to various parts of 
> the FPGA. I'm still looking for an article on a modification to the YAM to 
> help it cope with varying DC voltage that might be applied to the input from 
> the radio discriminator with DC coupling. Another modification was to use a 
> separate power supply to overcome some comports supplying insufficient 
> voltage.

Woohoo!  Got your other message, thanks!

I've been prowling around and found about three sites that have YAM info on them.  Found/downloaded the yam1_10.mcs file today which it says I need for these two boards (which are v1.10b).

I found a "MK1" YAM clone on one site which had a different layout and the site was written in a language I didn't know.  I saw mention (On that site I think) of a power mod for external power, but was not aware of any DC-coupling mod.  I'd be quite interested in both of those mods.

I don't know if I'll end up using a YAM much, or for long.  If not I can pass off what I've collected to the next guy with a better Linux driver and maybe some H/W mods to make them work better.

These are the YAM sites I know of:
http://www.jaffa.it/mirrors/guerrilla.net/reference/yam_9k6/yamdown.htm
http://gbppr.dyndns.org/guerrilla.net/reference/yam_9k6/yamdown.htm
http://sharon.esrac.ele.tue.nl/pub/packet/yam/features.htm
ftp://ha5ob.ham.hu/hamradio/modem/yammodem/download.htm

SMD version:
http://www.qsl.net/dg1scr/pr/yam/index_e.html

Clone board:
http://www.ampr.poznan.ws/users/sp3uqs/yam_mk1/index.html

--
Curt, WE7U.        http://www.eskimo.com/~archer
  Lotto:  A tax on people who are bad at math. - unknown
Windows:  Microsoft's tax on computer illiterates. - WE7U.
--
To unsubscribe from this list: send the line "unsubscribe linux-hams" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html