Date   : Sat, 15 Apr 2006 23:00:57 +0100
From   : Fragula <fragula@...>
Subject: Re: Warning: Sad case on list!

Hi Mike!

Mike Tomlinson wrote:
> 
> Coming to this thread very late (I've been away),
Better late than never. :-)

> but Mike Cook 
My favorite MU writer. :-)

> as one of his Body Building projects.  Someone here will have the Micro
> User magazine that the article appeared in.
Indeed he did, i remember it well. Oh. Also I have a fairly full set of
tMU, Probably full, up until when the Beeb (Master IIRC) went out of
production, and (due to the beeb not getting much copy) the MU simply
became irrelevant to me.

However I thought something more a complete replacement for the video
ULA would be more appetising. Mike Cook's design was, due to the
technology of the time really,  a little erm.. "spread out" IIRC.
Plugged into the RGB out and the User port, or the 1MHz bus, used the
R.G.B. signals to address the RAM in an external device..

I'm thinking more internal device, a small oilrigged replacement with a
pixel pusher, RAM and 3 DACs (could just be R2R ladders). Register
compatible after reset with the Acorn ULA, but with maybe a couple of
extra registers to allow the palette to be redefined as per VDU 19,
maybe additionally some sort per-line, or per "character block"
attributes (palettes) to be set.

Probably some sort of PLD and a RAM would suffice.

Cheers!

M.