[hpsdr] Flynn

[Chris Smith]

Roland

You are right - I was relying on my very fallible memory yet again.

Excalibur simply provides pass-through for the JTAG enquiry/response lines and doesn't turn them around. Sorry.

Chris

On 23 Mar 2011, at 16:58, roland etienne wrote:

> Hi Chris,
> 
> I'm not sure that Excalibur will provides the end of line turn-around, it is
> transparent for Jtag, so can be placed anywhere, but I think you need the
> last jtag jumper on the last board.
> Will have a look at schematics when at home to confirm!
> 
> Sure it will be a lot of work to emulate USB blaster with Metis! May be
> Altera will go to Ethernet programming tool one day?
> 
> 73, Roland F8CHK.
> 
> 
>> -----Message d'origine-----
>> De : hpsdr-bounces at lists.openhpsdr.org [mailto:hpsdr-
>> bounces at lists.openhpsdr.org] De la part de Chris Smith
>> Envoyé : mercredi 23 mars 2011 17:34
>> À : Bill Tracey
>> Cc : OpenHPSDR (open)
>> Objet : Re: [hpsdr] Flynn
>> 
>> ***** High Performance Software Defined Radio Discussion List *****
>> 
>> Hi Bill
>> 
>> I thought that might be the case. I've never written a driver for Windows
>> - I looked into it a long time ago but baulked at the arcane API (compared
>> to UNIX that is). Shame, though some masochist  might take it on. :-)
>> 
>> Incidentally, using Roland's procedure and Ozy I believe that the Last
>> JTAG jumper need not be installed at all if Excalibur is the last card in
>> the chain as that provides the end of line turn-around.
>> 
>> Cheers & 73
>> Chris G4NUX
>> 
>> 
>> On 23 Mar 2011, at 15:54, Bill Tracey wrote:
>> 
>>> No ... the USBBlaster emulation was done using USB JTAG from
>> <http://www.ixo.de/info/usb_jtag/>http://www.ixo.de/info/usb_jtag/ - this
>> was fairly easy because we had and FX2 USB connection on Ozy and someone
>> had done code to make the FX2 emulate an Altera USB Blaster.  We owe
>> kolja waschk, the author of USB JTAG a bit of thanks for making his code
>> available for the world to use.
>>> 
>>> To do the same for Metis would be a *lot of work* .... you'd have to do
>> a windows device driver that appeared to be a USB device (an Altera USB
>> Blaster)  to the Altera programmer code but then talked to Metis via the
>> Ethernet.  This would be a trival amount of work ... don't think we have
>> too many folks on the crew fond of writing Windows device drivers.
>>> 
>>> Regards,
>>> 
>>> Bill
>>> 
>>> At 09:14 AM 3/23/2011, Chris Smith wrote:
>>>> ***** High Performance Software Defined Radio Discussion List *****
>>>> 
>>>> <...snip...>
>>>> Does a similar facility exist on Metis to allow this USBBlaster
>> emulation? Otherwise it seems to me to be a retrograde step to have to
>> pull the card you want to program, install the jumper, program and then
>> remove the jumper.
>>>> <...snip...>
>>>> Cheers & 73
>>>> Chris G4NUX
>>> 
>> 
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> 
> 


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