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Author Topic: AVR & Proteus help  (Read 1672 times)
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sam_des
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« on: November 20, 2008, 05:26:17 05:26 »

Hello,

When I run my Imagecraft/Crossworks/Codevision compiled code under Proteus mega8, it generates error--

Quote
[AVR CORE] PC=0xnnnn PC=0020 is outside ROM space   U1      m.mmmmS
Where 0xnnnn, gives adresses which are beyond m8 ROM space.

I noted that this error is generated whenever I read from a ROM table. If I remove this particular instruction no more errors are generated.
BTW, AVRStudio does not cause any errors.

What may be the cause ? Is it this ...
Code:
   ldi    r30,low(rom_table*2)
   ldi    r31,high(rom_table*2)                ; Now Z may be greater than MAX_ROM
   lpm  r16,z+

Interestingly, same code compiled under IAR does NOT cause any errors with ISIS.

Thanks,
sam_des
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