Re: Mistery module - more details and corrections

From: MagerValp (MagerValp_at_cling.gu.se)
Date: 2003-10-14 21:44:55

>>>>> "WL" == William Levak <wlevak@cyberspace.org> writes:

WL> The 6821 is the Motorola equivalent of the 6520. Since this is an
WL> interface chip, it must be connected to something. Is there a
WL> connector on the cartridge? That would give some clue as to what
WL> it does.

6821's are commonly used for memory banking. If the ROM chip is larger
than 16 kB, the 6821 is probably used to select which bank gets
mapped.

-- 
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  _|___|_   +   .  +     .     +         .  Per Olofsson, arkadspelare
    o-o    .      .     .   o         +          MagerValp@cling.gu.se
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