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From: cl3polof@cling.gu.se (MagerValp)
Newsgroups: comp.emulators.cbm
Subject: Re: Action Replay Cartridge Emulation + bug report for the REU commands
Date: 13 Aug 1996 12:01:13 +0200
Organization: Educational Programme for Computational Linguistics, Univ. of Gothenburg
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In-reply-to: Jouko Valta's message of 12 Aug 1996 17:01:28 +0300
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Pontus> However the Action Replay is another thing! As well as most freezertype
Pontus> of carts, it features a sophisticated piece of hardware along the
Pontus> software, which enables it to do tricks. Bankswitching in the cart
Pontus> using $dd00 is the easiest one perhaps but it would still be a bit
Pontus> tricky, not to mention the rest there is to it!

it would be really easy to emulate TFC3... the cartridge consists of
four 16K banks, 511 bytes of code at $DE00-DFFE, and one write only
register at $DFFF... writing $40..$43 to $DFFF maps in one of the 16K
banks at $8000-$CFFF and writing $70 turns the 64 back to normal
mode... the only part that might be tricky is to figure out what
happens during power-up/reset/freeze... shouldn't be a problem for you
hardware guys though...

Jopi> Well, why do you want to emulate AR ?

general coolness?

Jopi> Won't some piece of manipulator code in the emu do the same thing ?

yes... no reason to re-invent the wheel though... and as a lot(?) of
people are used to using AR/TFC there wouldn't be a need to learn a
new interface...
-- 
    ___     .              +   .       .              .   Per Olofsson
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     "       +            +    .     http://www.cling.gu.se/~cl3polof/

                  C++ - like C but with two trainers
