debugger

[Frank]

Got it. I use the same technique with boards that have multiple
(4 or more) led's. I can write a value to the led to tell me
where i am in the code. Where can i get a POST card from...
--- Gregg C Levine <hansolofalcon at worldnet.att.net> wrote:
> Hello from Gregg C Levine
> A POST card? How to explain simply... A POST card, was
> created, (Or
> designed), to display the activities of the computer, through
> Port 80,
> while it works from power on, the final prompt. The term POST
> means,
> Power On Self Test. It descends from the original IBM-PC
> world. They
> are very useful, in this world, because we are creating the
> next
> generation BIOS from the ground, or bare metal, up. There are
> a preset
> sequence of events, numbered 00 to FF to go through. Each of
> them,
> properly documented, can tell a designer why his new system
> isn't
> working. And then there are a specific series of POST codes
> that can
> be useful to designers, when running supplied diagnostics. 
> 
> At least that was the case, about ten years ago. It's been
> that long
> since I did that kind of work. The repairing of such systems,
> that is.
> 
> Okay, Ron, Richard, how did I do?
> -------------------
> Gregg C Levine hansolofalcon at worldnet.att.net
> ------------------------------------------------------------
> "The Force will be with you...Always." Obi-Wan Kenobi
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> 
> 
> 
> > -----Original Message-----
> > From: linuxbios-admin at clustermatic.org [mailto:linuxbios-
> > admin at clustermatic.org] On Behalf Of Frank
> > Sent: Thursday, May 15, 2003 1:55 PM
> > To: jarcher; linuxbios at clustermatic.org
> > Subject: Re:debugger
> > 
> > I don't mind getting dirty. as a matter of fact i prefer to
> work
> > in the dirt. That's why I'm looking at linuxbios.:-)
> > I come from a ppc and mips world where debuuger's are a lot
> more
> > plentiful and cheaper. What is a "POST card"...
> > --- jarcher <jarcher at pobox.com> wrote:
> > > To add to Ron's message.
> > >
> > > It varies a lot with your experience and how dirty you
> want to
> > > get.
> > >
> > > A simple POST card and a lot of creative POST code bread
> > > crumbs is the
> > > cheap and dirty way to go, until you get the serial port
> > > debugger up and
> > > running.  But it requires you to be really creative in
> > > crawling through the
> > > code.  And takes a lot of time.
> > >
> > > But you can move up the a logic analyzer looking at bus
> cycles
> > > or an ICE
> > > (in circuit emulator) looking at CPU activity  These two
> are
> > > expensive
> > > (lots of $10K), but you can often rent them.  Setup is
> usually
> > > the time
> > > burner here.  But with a LA you can take selective
> pictures of
> > > events
> > > chained together in time.  I don't know if SIS has an ICE
> for
> > > their SOC
> > > products.
> > >
> > > Jordan
> > >
> > > PS: Has anyone done a USB interface low level debugger? 
> Early
> > > BIOS or at
> > > least just prior to payload decompress.
> > >
> > >
> > > At 12:00 PM 5/15/2003 -0400, you wrote:
> > > >Message: 10
> > > >Date: Thu, 15 May 2003 08:50:44 -0700 (PDT)
> > > >From: Frank <frannk_m1 at yahoo.com>
> > > >Subject: Re: debugger
> > > >To: ron minnich <rminnich at lanl.gov>
> > > >Cc: linuxbios at clustermatic.org
> > > >
> > > >sis55x SOC x86 based
> > > >--- ron minnich <rminnich at lanl.gov> wrote:
> > > > > On Thu, 15 May 2003, Frank wrote:
> > > > >
> > > > > > Can anyone recommend a debugger for bringing up
> > > LinuxBios on
> > > > > an
> > > > > > x86 system...
> > > > >
> > > > > what kind of chip? and how much money can you spend?
> > > > >
> > > > > ron
> > >
> > > _______________________________________________
> > > Linuxbios mailing list
> > > Linuxbios at clustermatic.org
> > > http://www.clustermatic.org/mailman/listinfo/linuxbios
> > 
> > 
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