Re: [avr-gcc-list] Puzzling Simulavr behaviour

[Hermann Kraus]

Hello Erik,
> WARNING: file ../../src/memory.c: line 148: **** Attempt to read invalid 
> addr: 0x0460
> WARNING: file ../../src/memory.c: line 148: **** Attempt to read invalid 
> addr: 0x0461
I haven't checked where the errors exactly come from, but the are in 
gerneral only
two possibilities:
1. The perperial at this memory location is unimplemented, yet
or
2. There's a problem with avr-gdb. Ted said that this will be fixed in 
gdb6.0.

> Throughout, the simulation works fine.
> Simulavr-disp shows all the right things happening in the registers,
> including the I/O ports.
Just don't worry about these warnings as long as everything works fine.

> Trying to track the cause:
> In simulavr, the warning arises in mem_read() when VDevice* dev == NULL.
> This seems to suggest that the device is unknown, but the invocation is:
This test doesn't check if the device to be simulated to unknown, but 
rather
if the internal V(irtual)Device for the corresponding memory location is 
known.

> simulavr -d atmega16 -g -P simulavr-disp &
> and the response is:
>
> Simulating a atmega16 device.
This is the normal output. Every thing is ok so far.

> Trying -d=atmega16 , as in the manpage synopsis, causes:
> WARNING: file ../../src/main.c: line 348: Device not supported:
> =atmega16
This was an error in the docs. I've fixed it and send the patch so the 
simulavr mailinglist.

> and -datmega16 behaves the same as -d atmega16 .
> Has anyone encountered something alike?
Check the mail archives.
BTW: There's a seperate simulavr mailing list: address@hidden

Best regards,
Hermann