Analogue-sequencer

Count me in on buying a memory expansion board for sure...

Thanks,
Stu

On 15/06/2007, at 10:11 AM, Colin Fraser wrote:

> Folks,
>
> One of the things that became clear from developing the v3 to v4  
> conversion
> utility (download coming soon), is that by re-using the patterns in
> different orders in many playlists, it's possible to create a bank  
> in v3
> that uses quite a bit more storage space in v4.
> If every bank re-uses patterns in this way (now known as  
> 'Nagling'), it can
> be impossible to fit a converted v3 dump in v4, even using ghosting  
> where
> ever possible.
>
> Since v4 was developed as a test-bed for the P3 replacement hardware
> platform, it was designed for scalable memory.
> I've just completed a prototype memory expansion board for P3, which
> increases the internal RAM from 64k to 544k.
> Note that this board is only compatible with v4.
> It uses bank switching to give a dedicated 224 bars of pattern  
> storage per
> v4 bank - still dynamically allocated between tracks and parts.
> This is rather more than the average 24 bars per bank in the stock  
> P3 -
> 3,200 extra bars in total, on top of the standard 384.
>
> If you've been using v4, and would like to buy a memory expansion  
> board, let
> me know.
> I'll be finishing off a PCB layout shortly and ordering a run of  
> boards.
> Installation will just be a case of unplugging the 32k SRAM in U2, and
> replacing it with a daughterboard.
>
> The prototype can be seen here:
> http://www.sequentix.com/p3-half-meg-memex.jpg
>
> Best regards,
> Colin Fraser
> Sequentix Music Systems Ltd
> http://www.sequentix.com
>
>
> 



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