jtag loader for picoblaze

hi all

we have implemented  a picoblaze in  vertex 4 kit and we r in the path
of implementing JTAG loader to reconfigure block rom ,which is used to
change the program ROM.
any one have an idea on implementing JTAg loader in VERTEX 4. we tried
but it is giving a error of

" virtex 2 boundary scan failed to match for virtex 4""

please help us to overcome this problem

thanks 
umesha

umeshmgowda@gmail.com schrieb:

> hi all
>
> we have implemented  a picoblaze in  vertex 4 kit and we r in the path
> of implementing JTAG loader to reconfigure block rom ,which is used to
> change the program ROM.
> any one have an idea on implementing JTAg loader in VERTEX 4. we tried
> but it is giving a error of
>
> " virtex 2 boundary scan failed to match for virtex 4""
>
> please help us to overcome this problem
>
> thanks
> umesha

take the original picoblaze jtag loader and just replace the bscan
primitive
then it will work

Antti

you need to change the BSCAN  primitive...
and remember to use the picoblaze C compiler!
Next Monday you can download the new version 1.8.3 + optimizer!!

good luck,
Francesco

umeshmgowda@gmail.com wrote:
> hi all
>
> we have implemented  a picoblaze in  vertex 4 kit and we r in the path
> of implementing JTAG loader to reconfigure block rom ,which is used to
> change the program ROM.
> any one have an idea on implementing JTAg loader in VERTEX 4. we tried
> but it is giving a error of
>
> " virtex 2 boundary scan failed to match for virtex 4""
> 
> please help us to overcome this problem
> 
> thanks 
> umesha

you need to change the BSCAN  primitive...
and remember to use the picoblaze C compiler!
you can download for free on www.poderico.co.uk
(do not dowanload the version 1.7.7 is too old.... this evening or
tomorrow I'll put the
new version 1.8.3)
This version has an optimizer (reduce 15% of the code)


good luck,
Francesco

umeshmgowda@gmail.com wrote:
> hi all
>
> we have implemented  a picoblaze in  vertex 4 kit and we r in the path
> of implementing JTAG loader to reconfigure block rom ,which is used to
> change the program ROM.
> any one have an idea on implementing JTAg loader in VERTEX 4. we tried
> but it is giving a error of
>
> " virtex 2 boundary scan failed to match for virtex 4""
> 
> please help us to overcome this problem
> 
> thanks 
> umesha