Re: [avr-gcc-list] ATmega128 problems

[Hermann Kraus]

> address@hidden CarryCoder2]$ simulavr --device=atmega128 -g
> Simulating a atmega128 device.
> MESSAGE: file ../../src/decoder.c: line 3352: generating opcode 
> lookup_table
> Waiting on port 1212 for gdb client to connect...
> Connection opened by host 0.0.0.0, port 34172.
> WARNING: file ../../src/memory.c: line 168: **** Attempt to write invalid
> addr: 0x005b
> WARNING: file ../../src/memory.c: line 148: **** Attempt to read invalid
> addr: 0x1100
> WARNING: file ../../src/memory.c: line 148: **** Attempt to read invalid
> addr: 0x1101
> [...]
> I commented out all of the code in my main function except one.  I need 
> some help to understand what is going on because this is the first time I 
> have used GDB or simulavr.
> I am guessing that I created a breakpoint when entering main and the 
> errors occured during the boot-loader for the ATmega128.  Is
> this the proper assumption and if so, does anyone know a solution?
These warnings are not a problem of your program, these registers are not 
implemented in simulavr, yet. During boottime these registers are accessed 
from the   To avoid confusion I've changed the line to:
avr_warning( "**** FIXME: Attempt to read a register of an unimplement 
VDevice (addr: 0x%04x)\n", addr );

You shouldn't use version 0.1.1 anyways. It's quite old. Download the most 
recent version from cvs. If made a patch to support the changed of the 
positions bits in ATMega128 (compared to 90s8515). It also improves the 
timers, but the version in the mailinglist-archive has some bugs. I'll post 
a new patch to the simulavr-devel-list next week.

Hermann