JTAG EMULATOR BUILT WITH A PIC? P

[nikaoj13]

Hi,

has anybody built a JTAG emulator using a PIC or any other kind of microcontroller?

I have read a bit about Lauterbach and thought maybe it could be done with a PIC.

Thanks

Joaquin

 

[motion]

I built one to connect to the JTAG port of a 386EX processor board. It was used to program the flash eprom on this board through the JTAG port.

I had initially used a low cost JTAG adapter using the parallel port like the Wiggler. However, I could not get it to work after several days of tinkering. Added to this was the problem of working with the printer port under WinXP. See the recent threads of this.

After a couple of days programming, I was able to get it up and running. It works the same way as the ICD2. I even put in a bootloader so I can customize its use.

 

[nikaoj13]

thanks,

i will check it and see if it can work out. Any infomration on the SW to use? I will try to use it with an ARM7 microprocessor.......


Thanks again

Joaquin

 

[motion]

thanks,

i will check it and see if it can work out. Any infomration on the SW to use? I will try to use it with an ARM7 microprocessor.......


Thanks again

Joaquin

ARM... They use them in home broadband routers.

Try this link:
http://hri.sourceforge.net/tools/jtag_faq_org.html#_Toc63218731

There is a PDF file of a serial debugger. It does not use a PIC but a different microcontroller. There is a link within the document to where to obtain the firmware for it. Within the above link, there are links to where to obtain debugging tools.