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Re: gEDA-user: Test pads in PCB

To: geda-user@xxxxxxxx
Subject: Re: gEDA-user: Test pads in PCB
From: DJ Delorie <dj@xxxxxxxxxxx>
Date: Wed, 18 Jan 2006 00:16:21 -0500
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In-reply-to: <43CDCC78.3090906@bellsouth.net> (message from Marvin Dickens on Wed, 18 Jan 2006 00:04:56 -0500)
References: <20060117150413.C36402AA07@earl-grey.cloud9.net> <43CDB25D.6030608@optonline.net> <43CDC253.9070208@bellsouth.net> <200601180428.k0I4Sk8U030278@envy.delorie.com> <43CDC9A1.7@bellsouth.net> <200601180458.k0I4wRhY031104@envy.delorie.com> <43CDCC78.3090906@bellsouth.net>
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> > It's a 20 pin chip, and you want to use four of them for JTAG?

> I thought I saw you were looking at doing something with an ARM9 chip.

JTAG is only fully useful when all the chips support it - you'd chain
all the chips together to do continuity testing of the board after
assembly.  The R8C/17 doesn't support JTAG.

I think ARM9 chips expect you to use JTAG for downloading and
debugging, yes.

Follow-Ups:
- Re: gEDA-user: Test pads in PCB
  - From: Marvin Dickens

References:
- Re: gEDA-user: Test pads in PCB
  - From: Stuart Brorson
- Re: gEDA-user: Test pads in PCB
  - From: Hal2000
- Re: gEDA-user: Test pads in PCB
  - From: Marvin Dickens
- Re: gEDA-user: Test pads in PCB
  - From: DJ Delorie
- Re: gEDA-user: Test pads in PCB
  - From: Marvin Dickens
- Re: gEDA-user: Test pads in PCB
  - From: DJ Delorie
- Re: gEDA-user: Test pads in PCB
  - From: Marvin Dickens

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