On Mon, 29 Mar 1999, Maarten ter Huurne wrote:
> At 03:35 PM 3/29/99 +0200, shevek wrote:
>
> >Is it useful to know if there is a mapper if you don't know where it is?
>
> No, it isn't. ("where" = "slot")
> To check the presence of the mapper, you don't have to read the mapper
> ports. Just like you can detect a megaRAM, although the megaRAM mapper
> cannot be read.
> On any slot containing RAM, you use the "count pages" algorithm. If you get
> "1" as a result, it is either no mapper or a 1-page mapper (makes no
> difference in use).
Not at all. It is the same difference as between 64kB fixed memory and a
64kB mapper. A 16kB mapper can be switched in any page. No mapper is fixed
address.
Bye,
shevek
---
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