Re: [avr-chat] Re: AVR in Jtag Chain (was: Programmer for everyone!)

[Clemens Koller]

Uwe Bonnes schrieb:
> > > > > > "Steve" == Steve Franks <address@hidden> writes:
>
>     >> (*) Programming of an AVR in a JTAG chain isn't possible, right?!
>     Steve> It's certainly supposed to work, but see my earlier posts on a
>     Steve> really bad experience I had before you try it.  I'll not bring
>     Steve> the details up again for fear people will believe I'm disparaging
>     Steve> my favorite processor.
>
> The ability to program parts in a JTAG chain downstream of an AVR depends on
> the AVR Chip revision. See the datasheet and the errata, but don't expect
> clean words about the chip revision when the bug was fixed.
>
> With recent chips it can be done:
>
> > detectchain -c ftdi -t ikda
> JTAG loc.: 0    IDCODE: 0x0978103f      Desc: AT90CAN128        IR length: 4
> JTAG loc.: 1    IDCODE: 0x05046093      Desc: XCF04S    IR length: 8
> JTAG loc.: 2    IDCODE: 0x41c22093      Desc: XC3S500E  IR length: 6

Great! Thanks!
I am currently using i.e. the ATmega168. I'll try to chain it with my
Actel FPGA and other stuff.
So, you are using the XC3SprogAT91 JTAG tools?

Regards,
--
Clemens Koller
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