[Icc-avr] Memory mapped display not working in bootloader

[Tim Mitchell]

Hello

I am trying to write my first bootloader, for Mega USB1287. This is a
128K device. I have set the IDE to give me a 4K bootloader, and set to
use external 32K sram.

I have a 32K sram at 0000-3FFF and a display memory mapped at
0x8400-0x8F00. The display works fine in a normal program, however in
the bootloader nothing seems to be being output to the display (same
code copied to a new program) - in fact there is no activity on the
external memory port at all. Is there any reason I can't do it like that
in a bootloader?

Or am I missing something really obvious?


-- 
Tim Mitchell
tim at sabretechnology.co.uk http://www.sabretechnology.co.uk
Sabre Technology (Hull) Ltd, 3a Newlands Science Park, Hull HU6 7TQ
Registered in England and Wales no.3131504
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