Re: C128 memory - B series compatibility - Basic using 256k - a new version of the hardware for 256k

From: Chriz <chris_at_lachriz.de>
Date: Wed, 9 May 2018 03:31:15 +0200
Message-Id: <0A22B55B-236D-4B61-9229-9A0CC7EFBEB7@lachriz.de>
The CPC memory mapping also seems to use 16k blocks, although a bit more restricted regarding "configurations":

http://cpctech.cpc-live.com/docs/rampage.html

Am 09.05.2018 um 03:13 schrieb David Wood <jbevren@gmail.com>:

> As I remember the MSX memory mapper is fairly simple-  It maps 16k blocks of CPU space to any area of physical memory.  Basically cocomem jr with a 16k page rather than 2k ;-)
> 
> https://www.msx.org/wiki/Memory_Mapper
> 
> On Tue, May 8, 2018 at 7:04 PM, Jim Brain <brain@jbrain.com> wrote:
> On 5/8/2018 2:36 PM, Chriz wrote:
> 
> I would like to add another aspect you might consider:
> 
> If your MMU design allows the Z80 processor to see memory mappings similar to the ones which are possible in CPC 6128 or MSX computers, there's a good chance for Jörn Mika's magnificent SymbOS getting ported to the C128!
> (Until now the C128 memory organisation has been the "show stopper".)
> Is there a document that is easily perusable that shows the organization needed?
> 
> Jim
> 
> 
> 
Received on 2018-05-09 04:01:36

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