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running BUFFALO monitor...using external IRQ to restart from WAI...
works fine in single chip mode but will not restart in special
bootstrap mode...do the IRQ and/or WAI functions get altered in
special bootstrap?

thanks in advance,
LAP




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lapierre_john wrote:
> running BUFFALO monitor...using external IRQ to restart from WAI...
> works fine in single chip mode but will not restart in special
> bootstrap mode...do the IRQ and/or WAI functions get altered in
> special bootstrap?

If you are intending that BUFFALO start you, then you are
up the proverbial creek. When you start in Special Test
Mode, the vectors all come from a different location, and
do *not* point to BUFFALO, hence it does not gain control.

[reaches for manual]

I quote the manual:

"In special test operating mode, the reset and interrupt
vectors are fetched from external memory locations
$BFC0-$BFFF rather than $FFC0-$FFFF."

So, if you have RAM there, then use BUFFALO to put your
code wherever you are downloading to, then put vectors
at $BFC0-$BFFF to point into your code, change your
mode jumpers, and reset.

Your code will *spring* to life!

Well, *maybe* it will, anyway.

:-) > thanks in advance,
> LAP

Welcome in retrograde mode.

Next time, try RTFM. It'll save you some time.

Mike
--
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This message made from 100% recycled bits.
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