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Newsgroups: comp.sys.sinclair
From: k...@little-bat.de (kio (Günter Woigk))
Date: 2000/05/17
Subject: Re: RFC: ULA Replacement for ZX Spectrum SE
Hi!
Matthew Westcott <gas...@raww.org.RemoveThisBit.invalid> wrote: not quite right ... the ay chip used 2 addresses in the major address > It still means hogging 256 addresses though - I propose a similar system > to the AY chip, namely to have one port to select a 'register' number and > one port to determine the value of that register. byte (the lower address byte) which probably was not even decoded fully, so it probably actually required 32 addresses. my suggestion uses only one address in the major i/o address byte. > I don't really agree with the idea of multiple screen modes - I think the maybe i added too much in my enthusiasm. that's why i appended the > aim should be to give the Speccy a few bells and whistles, not to design > something that amounts to a whole new computer system. We've got the Sam > Coupe for that :-) 'let's start with the palettes first' at the end. finally, it's up to andrew whether he'd like to include a new screen mode or something like this in his version of a new rom. if it's not too weird i'd like to support it. ZX Spectrum SE ... is this another project or the latest name of the ... kio ! You must Sign in before you can post messages.
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