debugger

[Gregg C Levine]

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
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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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