Re: [HRI-devel] here is my little project ...

[Wladston V. <wla...@gm...>]

you were right!
This project lives till present time! very interesting! Thanks for the name=
!=20
;-)

The mp3 player works with a chip named ATJ2085, and his Z80 MCU runs at=20
24.576MHz(TYP), up to 60MHz ... not sooo slow ...and the DSP is 24-bit=20
...for an mp3 player, I think 64K of men address is something handable...

I'm not participating on the router project because I have no hardware to=
=20
play with! =3D(


On 7/10/05, Bruno Lopes F. Cabral <br...@op...> wrote:
>=20
> Hello there
>=20
> I worked with Z80 assembly, but it was more or less twenty years
> ago... there is a project to run unix on Z80 that could provide
> pointers (MSX project called UZIX, if I recall correctly), but
> you must consider that it has only 64KB address space and it is
> slow (3.78MHz, while most SOHO hardware are 75 to 200MHz, RISCs)
>=20
> to our projects, I plan to borrow some code from cx82100 running
> on actiontec modem router, it is almost completely reverse
> engeniered (to the ppl who don't follow its list) and could
> aid on the difficulties we had in the past (mainly on how to
> succesfully cross-compile busybox and stuff like that). keep in
> touch!
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> Cheers
> !3runo
>=20
> Wladston Viana wrote:
> > Guys, it's not a router, but this system for sure needs firmware
> > recycling too ....
> >
> > It's a popular cheap mp3 player ....
> >
> > http://s1mp3.atspace.com
> >
> > I'm stuck on reversing the bootloader ... I could't find any complete
> > datasheet ....
> >
> > The instruction set is Z80... if anyone experienced on Z80 could take a
> > look ... =3D)
> >
> > Thanks, and sorry for the off topic ....
>=20
>=20
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>=20



--=20
Wladston Viana Ferreira Filho
Belo Horizonte - MG, Brasil