Hey guys,

We're trying to make a miracle : flash an undocumented Z80 processor through
JTAG.

The silicon is the ATJ2085 - the chip that powers the chinese "s1 mp3
player"

There is a real problem : we need Z80 JTAG specification.

If there is an electronics expert who know Z80 and can help, please, read
the todo list: http://www.s1mp3.org/wiki/index.php/Talk:ICE/JTAG_how_to

There are lots of missing info, but the most important are the JTAG register
sizes.

If you think you can contribute it anyways, please, edit the wiki page with
new information!

Thanks and I hope some of you can bring us any light!

*project home page : www.s1mp3.org
*project wiki : wiki.s1mp3.org

--
Wladston Viana Ferreira Filho
Belo Horizonte - MG, Brasil
Visit the project: s1mp3.org