Analogue-sequencer

i'll take one.

Colin Fraser <colin@sequentix.com> 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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