RE: ROM Dump of Amiga Keyboard controller

From: Martin Hoffmann-Vetter <martinHV_at_arcor.de>
Date: Wed, 11 Jun 2014 12:47:37 +0200
Message-ID: <005801cf8562$91287270$6800a8c0@mhv.webmade.com>
> You would have to pad the loader with $EA at the beginning, but since
> you don't have to deal with addresses and can ignore the program
> counter, only have feed the port the right byte at the right time, you
> can have as many $EA as you like at the beginning. Even the reset
> vector can be $EAEA without causing trouble.

That was my first idea, too. So is think there is an first step to check if
this will work. You pull the correct opcodes with operand on port C to
toggle an io pin. So you can see if this program is running by checking this
io pin. If the startup of this program is 100% the next step is to copy this
program into the ram and start it from ram. After all is working, you can
write the dumper program.

Martin


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Received on 2014-06-11 11:00:03

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