Re: implement the JTAG MASTER --ACT8990 by using FPGA

"strayblue" <strayblue2003@yahoo.com-dot-cn.no-spam.invalid> schrieb im
Newsbeitrag news:Y5-dncZSwMbpxMTfRVn_vg@giganews.com...
> I want to implement the JTAG MASTER --ACT8990 by using FPGA,Does who
> have do the same thing? Could someone give me a hand please?
>

heavens sake why do you want todo this ??!

the 8990 is a very old biest, why duplicate it?
just make your own JTAG master and be happy

antti

I want to implement the JTAG MASTER --ACT8990 by using FPGA,Does wh
have do the same thing? Could someone give me a hand please

I am new to the JTAG MASTER.Could you give me some example o
document

"strayblue" <strayblue2003@yahoo.com-dot-cn.no-spam.invalid> schrieb im
Newsbeitrag news:iZmdnTJmKoW5n8ffRVn_vg@giganews.com...
> I am new to the JTAG MASTER.Could you give me some example or
> document?
>

Dear Chinese Student,

there are 3 kinds of people

1) those who go to school because "they teach in school" - those people
learn nothing
2) those who go to school because they want to learn - whatever they learn
is outdated info by the day they finish the school
3) those who learn that whatever there is to learn is up to them, those quit
the school and start doing things and learn on the way of doing

if you dont want to be in category [1] then start learning!

JTAG master as standalone doesnt make much sense, if there is no application
SW supporting it.

implementing JTAG MASTER in SW by any small microcontroller is very simple,
and there is NO special hardware needed, all you need is 4 general purpose
I/O pins. As example in

http://www.hydraxc.com

there is a special JTAG controller implemented in small Microcontroller, by
using regular MCU IO pins the this Processors achives JTAG data transfer
rate up to 4Mbit per second, at 8MHz processor clock, and this without any
special hardware. Any processor with higher clock rate can get even higher
JTAG clock rates.

If simple JTAG MASTER hardware speed up is required, then please take a look
at

http://gforge.openchip.org/projects/jisp/

there is verilog implementation of JISP byte code player, if Bytes are
written to it, then it converts them to JTAG, well it requires a specially
prepared (tokenized) bytestream. When using this JISP player connected to
some CPU via small fifo then very high sustained JTAG TCK speeds can be
achived

http://www.mesanet.com/software/parallel/jtag.zip

and there is JTAG is your JTAG TAP master in VHDL

but my bet is that this info does not help you to pass your exam, you need
to start LEARNING and most important DOING things yourself.

Antti

strayblue wrote:
> I want to implement the JTAG MASTER --ACT8990 by using FPGA,Does who
> have do the same thing? Could someone give me a hand please?
> 

You may start with the Chameleon POD from www.amontec.com.

Larry

Thank you very much,I will learn to do it,and will do it better

> Antti Lukatswrote
"strayblue" <strayblue2003@yahoo.com-dot-cn.no-spam.invalid
schrieb i
> Newsbeitrag news:iZmdnTJmKoW5n8ffRVn_vg@giganews.com..
> I am new to the JTAG MASTER.Could you give me some example o
> document
>
>
Dear Chinese Student

there are 3 kinds of peopl

1) those who go to school because "they teach in school" - thos
peopl
learn nothin
2) those who go to school because they want to learn - whatever the
lear
is outdated info by the day they finish the schoo
3) those who learn that whatever there is to learn is up to them
those qui
the school and start doing things and learn on the way of doin

if you dont want to be in category [1] then start learning

JTAG master as standalone doesnt make much sense, if there is n
applicatio
SW supporting it

implementing JTAG MASTER in SW by any small microcontroller is ver
simple
and there is NO special hardware needed, all you need is 4 genera
purpos
I/O pins. As example i

http://www.hydraxc.co

there is a special JTAG controller implemented in smal
Microcontroller, b
using regular MCU IO pins the this Processors achives JTAG dat
transfe
rate up to 4Mbit per second, at 8MHz processor clock, and this withou
an
special hardware. Any processor with higher clock rate can get eve
highe
JTAG clock rates

If simple JTAG MASTER hardware speed up is required, then please tak
a loo
a

http://gforge.openchip.org/projects/jisp

there is verilog implementation of JISP byte code player, if Byte
ar
written to it, then it converts them to JTAG, well it requires 
speciall
prepared (tokenized) bytestream. When using this JISP player connecte
t
some CPU via small fifo then very high sustained JTAG TCK speeds ca
b
achive

http://www.mesanet.com/software/parallel/jtag.zi

and there is JTAG is your JTAG TAP master in VHD

but my bet is that this info does not help you to pass your exam, yo
nee
to start LEARNING and most important DOING things yourself

Antti[/quote:10dea36cf8

"strayblue" <strayblue2003@yahoo.com-dot-cn.no-spam.invalid> schrieb im
Newsbeitrag news:lt6dnd2PNq8vYcbfRVn_vg@giganews.com...
> Thank you very much,I will learn to do it,and will do it better.

thats better attitude, I belive that if you do, you can do it. better.

The links I provided do not give anything quite ready to use, just those
starting points known to me. Hopefully there was some usefulness in it. And
hope you didnt mind my writing style, I am very open, so I say what I think.
So get a Smile and start doing. And try keep smiling :)

Antti
BTW I am at the moment quite engaged with JTAG from different aspects, both
from master and slave side and also in supporting software, so if you make
something better, please keep me posted, or better would be if there would
be some result from your work that could be used by others.



> > Antti Lukatswrote:
> "strayblue" <strayblue2003@yahoo.com-dot-cn.no-spam.invalid>
> schrieb im
> > Newsbeitrag news:iZmdnTJmKoW5n8ffRVn_vg@giganews.com...
> > I am new to the JTAG MASTER.Could you give me some example or
> > document?
> >
> >
> Dear Chinese Student,
>
> there are 3 kinds of people
>
> 1) those who go to school because "they teach in school" - those
> people
> learn nothing
> 2) those who go to school because they want to learn - whatever they
> learn
> is outdated info by the day they finish the school
> 3) those who learn that whatever there is to learn is up to them,
> those quit
> the school and start doing things and learn on the way of doing
>
> if you dont want to be in category [1] then start learning!
>
> JTAG master as standalone doesnt make much sense, if there is no
> application
> SW supporting it.
>
> implementing JTAG MASTER in SW by any small microcontroller is very
> simple,
> and there is NO special hardware needed, all you need is 4 general
> purpose
> I/O pins. As example in
>
> http://www.hydraxc.com
>
> there is a special JTAG controller implemented in small
> Microcontroller, by
> using regular MCU IO pins the this Processors achives JTAG data
> transfer
> rate up to 4Mbit per second, at 8MHz processor clock, and this without
> any
> special hardware. Any processor with higher clock rate can get even
> higher
> JTAG clock rates.
>
> If simple JTAG MASTER hardware speed up is required, then please take
> a look
> at
>
> http://gforge.openchip.org/projects/jisp/
>
> there is verilog implementation of JISP byte code player, if Bytes
> are
> written to it, then it converts them to JTAG, well it requires a
> specially
> prepared (tokenized) bytestream. When using this JISP player connected
> to
> some CPU via small fifo then very high sustained JTAG TCK speeds can
> be
> achived
>
> http://www.mesanet.com/software/parallel/jtag.zip
>
> and there is JTAG is your JTAG TAP master in VHDL
>
> but my bet is that this info does not help you to pass your exam, you
> need
> to start LEARNING and most important DOING things yourself.
>
> Antti[/quote:10dea36cf8]
>

I think your conclusion about three kinds of people is ver
classical.I hope that we will have more intercommunion

> Antti Lukatswrote
"strayblue" <strayblue2003@yahoo.com-dot-cn.no-spam.invalid
schrieb i
> Newsbeitrag news:lt6dnd2PNq8vYcbfRVn_vg@giganews.com..
> Thank you very much,I will learn to do it,and will do it better
>
thats better attitude, I belive that if you do, you can do it
better

The links I provided do not give anything quite ready to use, jus
thos
starting points known to me. Hopefully there was some usefulness i
it. An
hope you didnt mind my writing style, I am very open, so I say what 
think
So get a Smile and start doing. And try keep smiling :

Antt
BTW I am at the moment quite engaged with JTAG from different aspects
bot
from master and slave side and also in supporting software, so if yo
mak
something better, please keep me posted, or better would be if ther
woul
be some result from your work that could be used by others


[[/quote:a8cad9cfa2

"strayblue" <strayblue2003@yahoo.com-dot-cn.no-spam.invalid> schrieb im
Newsbeitrag news:n5udnQdoZ_Ct1cLfRVn_vQ@giganews.com...
> I think your conclusion about three kinds of people is very
> classical.I hope that we will have more intercommunion.
almost ROTFL, I hope it too.

and I also hope there is nothing classical about me ;)
at the uni some professor's where a little annoyed about me:
"comes to my class, falls a sleep, wakes up to correct an error on
the whiteboard and continues to sleep"
- it was almost about that. I did quit then...

Antti




> > Antti Lukatswrote:
> "strayblue" <strayblue2003@yahoo.com-dot-cn.no-spam.invalid>
> schrieb im
> > Newsbeitrag news:lt6dnd2PNq8vYcbfRVn_vg@giganews.com...
> > Thank you very much,I will learn to do it,and will do it better.
> >
> thats better attitude, I belive that if you do, you can do it.
> better.
>
> The links I provided do not give anything quite ready to use, just
> those
> starting points known to me. Hopefully there was some usefulness in
> it. And
> hope you didnt mind my writing style, I am very open, so I say what I
> think.
> So get a Smile and start doing. And try keep smiling :)
>
> Antti
> BTW I am at the moment quite engaged with JTAG from different aspects,
> both
> from master and slave side and also in supporting software, so if you
> make
> something better, please keep me posted, or better would be if there
> would
> be some result from your work that could be used by others.
>
>
>
> [[/quote:a8cad9cfa2]
>