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[Simulavr-devel] [support #102503] Mega8 Simulation or config problem?
From: |
nobody |
Subject: |
[Simulavr-devel] [support #102503] Mega8 Simulation or config problem? |
Date: |
Sun, 02 Nov 2003 23:48:14 -0500 |
User-agent: |
Microsoft Internet Explorer; Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1) |
Support Request #102503, was updated on Tue 10/07/2003 at 14:18
You can respond by visiting:
http://savannah.nongnu.org/support/?func=detailsupport&support_id=102503&group_id=997
Category: None
Status: Closed
Priority: 5
Summary: Mega8 Simulation or config problem?
By: troth
Date: Sun 11/02/2003 at 20:48
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user_id=4216
Browser: Microsoft Internet Explorer; Mozilla/4.0 (compatible; MSIE 6.0;
Windows NT 5.1)
Two things come to mind.
First, you are trying access io registers that simulavr does
not yet simulate (which is most of them at this point). You
need to look at the address and see if it is an io register
that isn't handled yet. In that case, your program probably
won't run right in the simulator.
Second possibility is that you are trying to access memory
beyond the internal sram. This happened a lot with pre-6.0
versions of gdb since it had some flaws in keeping track of
the stack pointer. Should be fixed in gdb-6.0.
----------------------------------------------------------------------
By: khouser
Date: Tue 10/07/2003 at 14:18
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Hi everyone,
I've been trying to use simulavr with the GDB
graphical interface included in WinAVR. I've
successfully started simulavr simulating a Mega8, then
connected to simulavr from the GUI, then started
running my working Mega8 code. The problem is that I
always get a message on the simulavr console window
about an error reading memory location 0xnnnn from
memory.c. Of course, the GUI is stopped while waiting
for a response from the simulator. In the simulavr
console window I can hit the enter key and then I get
the same error message with the next address. If I hit
enter long enough, sometimes the GUI gdb frontend will
respond again.
Any ideas on what could be setup incorrectly? Or is
the Mega simulation incomplete? My target code works
well in actual hardware and from within VMLab.
Thanks for your help,
Kevin
----------------------------------------------------------------------
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