Re: MMU prototyping

From: Mia Magnusson <mia_at_plea.se>
Date: Wed, 23 May 2018 15:00:20 +0200
Message-ID: <20180523150020.000013e3@plea.se>
Den Wed, 23 May 2018 10:55:15 +0100 skrev smf <smf@null.net>:
> On 23/05/2018 00:41, Jim Brain wrote:
> 
> > I guess it depends on what one defines as a "hack".  This unit
> > simply engages the GAME line anytime a memory access that should be
> > outside the C64 is requested.  I think that is standard behavior.
> 
> I don't believe you were supposed to change GAME & EXROM dynamically, 
> although a handful of projects do for better or worse.

Like all freezers and similar cartridges...

The only problem is afaik carts that does this timed on the reset
signal instead of actual accesses to the bus. They fail on the C128.

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Received on 2018-05-23 16:00:01

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