Forums

DSK as EMULATOR

Started by Unknown July 12, 2000
Does anyone know if it is possible to adapt a C6211DSK to use as a
JTAG emulator?

It looks as though all that is needed is to attach a cable from the
DSK JTAG to the target header and ensure that the DSK's CPU is
disabled (or dissconnected).

Has anyone tried this? Can anyone think of a reason why it wouldn't
work?

Dave



I have tried the same idea on motorola DSKs and it works. Your idea should work
as
long as you have the JTAG connection right. Let me know the result as I am
interested
too. Good luck.

-Tao

>>> <> 07/12/00 12:15AM >>>
Does anyone know if it is possible to adapt a C6211DSK to use as a
JTAG emulator?

It looks as though all that is needed is to attach a cable from the
DSK JTAG to the target header and ensure that the DSK's CPU is
disabled (or dissconnected).

Has anyone tried this? Can anyone think of a reason why it wouldn't
work?

Dave

Tradiant is creating the premiere marketplace for shippers and ocean
carriers to conduct the business of moving containerized freight online.
Our comprehensive suite of online services saves time and money.
Visit Tradiant today. www.tradiant.com
http://click.egroups.com/1/5504/9/_/14737/_/963405721/ To Join: Send an email to

To Post: Send an email to

To Leave: Send an email to

Archives: http://www.egroups.com/group/c6x

Other Groups: http://www.dsprelated.com


Yes, I've done it. No problems at all.

I used a Spectrum XDS510PP emulator. The board itself will detect whether
an emulator is connected or not as if not it will use the parallel port for
getting data

Best regards

Lars Skade

-----Original Message-----
From: [SMTP:]
Sent: Wednesday, July 12, 2000 6:16 AM
To:
Subject: [c6x] DSK as EMULATOR

Does anyone know if it is possible to adapt a C6211DSK to use as a
JTAG emulator?

It looks as though all that is needed is to attach a cable from the
DSK JTAG to the target header and ensure that the DSK's CPU is
disabled (or dissconnected).

Has anyone tried this? Can anyone think of a reason why it wouldn't
work?

Dave

Tradiant is creating the premiere marketplace for shippers and ocean
carriers to conduct the business of moving containerized freight online.
Our comprehensive suite of online services saves time and money.
Visit Tradiant today. www.tradiant.com
http://click.egroups.com/1/5504/9/_/14737/_/963405721/ To Join: Send an email to

To Post: Send an email to

To Leave: Send an email to

Archives: http://www.egroups.com/group/c6x

Other Groups: http://www.dsprelated.com



No it won't work without modifying the 6211 board.
I quick check of the circuit shows JTAG inputs to the
6211 are routed through a set of 2to1 muxes, with one side selecting
the '8990 and the other the JTAG connector. The selection is made using
a pull up on one of the pins that is grounded on the JTAG cable.

It may be possible to short the 2 to 1 mux inputs together, so connecting
the 8990 directly to the JTAG connector but the PD and TDI pins would
still need to be modified out.

There is also the issue of timing and drive across the JTAG cable, most
of which use a pod to register the output close to the target system.

Hope this helps ( and is correct)

Andy
----- Original Message -----
From: "Tao Zhang" <>
To: <>
Sent: Wed, 12 Jul 2000 13:44:12 +0100 (GMT+01:00)
Subject: Re: [c6x] DSK as EMULATOR

> I have tried the same idea on motorola DSKs and it works. Your idea should wo
rk as
> long as you have the JTAG connection right. Let me know the result as I am in
terested
> too. Good luck.
>
> -Tao
>
> >>> <> 07/12/00 12:15AM >>>
> Does anyone know if it is possible to adapt a C6211DSK to use as a
> JTAG emulator?
>
> It looks as though all that is needed is to attach a cable from the
> DSK JTAG to the target header and ensure that the DSK's CPU is
> disabled (or dissconnected).
>
> Has anyone tried this? Can anyone think of a reason why it wouldn't
> work?
>
> Dave >
>
> Tradiant is creating the premiere marketplace for shippers and ocean
> carriers to conduct the business of moving containerized freight online.
> Our comprehensive suite of online services saves time and money.
> Visit Tradiant today. www.tradiant.com
> http://click.egroups.com/1/5504/9/_/14737/_/963405721/ > To Join: Send an email to
>
> To Post: Send an email to
>
> To Leave: Send an email to
>
> Archives: http://www.egroups.com/group/c6x
>
> Other Groups: http://www.dsprelated.com >
> BTW: Did you buy that new car yet?
> If not, check this site out.
> They're called CarsDirect.com and it's a pretty sweet way to buy a car.
> http://click.egroups.com/1/6847/9/_/14737/_/963407662/ > To Join: Send an email to
>
> To Post: Send an email to
>
> To Leave: Send an email to
>
> Archives: http://www.egroups.com/group/c6x
>
> Other Groups: http://www.dsprelated.com

_____________________________________________________________________
FSmail - Get your free web-based email from Freeserve: www.fsmail.net



On 12 Jul 2000, at 22:44, Andrew Papageorgiou wrote:

> No it won't work without modifying the 6211 board.

I presume this means the DSK board. I was expecting to have to
modify the DSK anyway

> I quick check of the circuit shows JTAG inputs to the
> 6211 are routed through a set of 2to1 muxes, with one side selecting
> the '8990 and the other the JTAG connector. The selection is made using
> a pull up on one of the pins that is grounded on the JTAG cable.

I was planning to remove the muxes to breakout the connections
from the '8990 to go to my target 6211.

> It may be possible to short the 2 to 1 mux inputs together, so connecting
> the 8990 directly to the JTAG connector but the PD and TDI pins would
> still need to be modified out.
>
> There is also the issue of timing and drive across the JTAG cable, most
> of which use a pod to register the output close to the target system.

What exactly do you mean by this? If you are talking about the
length of cable from the '8990 to the target 6211 I intend to keep
this less than 5 inches long.

> Hope this helps ( and is correct)
>
> Andy
> ----- Original Message -----
> From: "Tao Zhang" <>
> To: <>
> Sent: Wed, 12 Jul 2000 13:44:12 +0100 (GMT+01:00)
> Subject: Re: [c6x] DSK as EMULATOR
>
> > I have tried the same idea on motorola DSKs and it works. Your idea should
wo
> rk as
> > long as you have the JTAG connection right. Let me know the result as I am
in
> terested
> > too. Good luck.
> >
> > -Tao
> >
> > >>> <> 07/12/00 12:15AM >>>
> > Does anyone know if it is possible to adapt a C6211DSK to use as a
> > JTAG emulator?
> >
> > It looks as though all that is needed is to attach a cable from the
> > DSK JTAG to the target header and ensure that the DSK's CPU is
> > disabled (or dissconnected).
> >
> > Has anyone tried this? Can anyone think of a reason why it wouldn't
> > work?
> >
> > Dave
> >
> >
> >
> >
> > Tradiant is creating the premiere marketplace for shippers and ocean
> > carriers to conduct the business of moving containerized freight online.
> > Our comprehensive suite of online services saves time and money.
> > Visit Tradiant today. www.tradiant.com
> > http://click.egroups.com/1/5504/9/_/14737/_/963405721/
> >
> >
> > To Join: Send an email to
> >
> > To Post: Send an email to
> >
> > To Leave: Send an email to
> >
> > Archives: http://www.egroups.com/group/c6x
> >
> > Other Groups: http://www.dsprelated.com
> >
> >
> >
> >
> >
> >
> > BTW: Did you buy that new car yet?
> > If not, check this site out.
> > They're called CarsDirect.com and it's a pretty sweet way to buy a car.
> > http://click.egroups.com/1/6847/9/_/14737/_/963407662/
> >
> >
> > To Join: Send an email to
> >
> > To Post: Send an email to
> >
> > To Leave: Send an email to
> >
> > Archives: http://www.egroups.com/group/c6x
> >
> > Other Groups: http://www.dsprelated.com
> >
> >
>
> _____________________________________________________________________
> FSmail - Get your free web-based email from Freeserve: www.fsmail.net >
>
> Tradiant is creating the premiere marketplace for shippers and ocean
> carriers to conduct the business of moving containerized freight online.
> Our comprehensive suite of online services saves time and money.
> Visit Tradiant today. www.tradiant.com
> http://click.egroups.com/1/5504/9/_/14737/_/963445092/ > To Join: Send an email to
>
> To Post: Send an email to
>
> To Leave: Send an email to
>
> Archives: http://www.egroups.com/group/c6x
>
> Other Groups: http://www.dsprelated.com



Dave,

Yes, you can do this. It does involve a few cut/jumpers,
but I am aware of a couple of people that have done this
with the C6x EVM which was used as the baseline for the DSK. The
DSK may be a better platform to do this from the perspective
that you can keep the cable from it to your target short. However,
the DSK interface is much slower than the PCI interface of
the EVM so it would be comparable to an XDS510PP instead
of an XDS510 (ISA) card.

Brian

wrote:

> Does anyone know if it is possible to adapt a C6211DSK to use as a
> JTAG emulator?
>
> It looks as though all that is needed is to attach a cable from the
> DSK JTAG to the target header and ensure that the DSK's CPU is
> disabled (or dissconnected).
>
> Has anyone tried this? Can anyone think of a reason why it wouldn't
> work?
>
> Dave > Tradiant is creating the premiere marketplace for shippers and ocean
> carriers to conduct the business of moving containerized freight online.
> Our comprehensive suite of online services saves time and money.
> Visit Tradiant today. www.tradiant.com
> http://click.egroups.com/1/5504/9/_/14737/_/963405721/ > To Join: Send an email to
>
> To Post: Send an email to
>
> To Leave: Send an email to
>
> Archives: http://www.egroups.com/group/c6x
>
> Other Groups: http://www.dsprelated.com