[Simulavr-devel] two things

[John Regehr]

There's a mistake in devsupp.c:296, I think.  The ATmega103 has only 4000
bytes of SRAM, not 4096.  The manual says "4 KB" of SRAM a few times but
that's not quite right: it actually lives at addresses 0x60-0xfff.

Has anyone looked into a portable way to tie interrupts to their enable
bits?  I was thinking this could be done by extending struct _IntVect to
include an I/O location and a bit number, providing a portable way for the
interrupt logic to decide when an interrupt should fire.  So the _IntVect
for TWI on an ATmega128 would become { "IRQ_TWI", 0x42, 0x00, 0x74, 0 }.
I'm interested in the interrupt bits because I need to support these in an
AVR binary analysis tool I'm writing.  It seems reasonable to share this
code with simulavr if people are interested.

John Regehr