Analogue-sequencer

I´m in for two :) Thank you Colin.





--- In analogue-sequencer@yahoogroups.com, "Colin Fraser" <colin@...> 
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
>