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Subject: Seeking help Z80 Jtag info

Seeking help Z80 Jtag info

From: Wladston Viana <>
Date: Wed, 18 Jan 2006 21:04:45 -0200

Hey guys,

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

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

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:

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

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 :
*project wiki :

Wladston Viana Ferreira Filho
Belo Horizonte - MG, Brasil
Visit the project:
Received on 2006-01-19

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