Analogue-sequencer

I've not got round to using V4 yet, but it's on the list of things to do
So I'd be interested in a memory expansion
Cheers
Jez
  -----Original Message-----
  From: analogue-sequencer@yahoogroups.com
[mailto:analogue-sequencer@yahoogroups.com]On Behalf Of Colin Fraser
  Sent: 14 June 2007 23:12
  To: analogue-sequencer@yahoogroups.com
  Subject: [analogue-sequencer] P3 v4 memory expansion


  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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