Emu XL-7 & MP-7 User's Group

I hope no one has misconceptions.

The P2K series can only access 128MB of wave forms (+16MB preset) at any one 
time. The SIMM really just allows you to do that with only one SIMM rather than 
four so you don't need to try and buy ROMs from ebay at high prices. Even 
if/when the OS is modified to allow you to switch between images you can't 
reliably do it while sounds are being generated so you won't really get 
'expanded' memory.

Also, because of size constraints (and the fact that I didn't want to use a BGA 
package for the first run - harder to debug and almost guarantees that you need 
to have a prototype run) the micro only supports USB full speed allowing a 
transfer rate around 1MB/second (so it will take up to 40 seconds to write an 
image, or approaching 5 minutes to program the entire FLASH. It won't be super 
fast!

On the plus side, I'm hoping that the 64-voice modules (which only have two SIMM 
sockets soldered in) will support four 'virtual slots'.




________________________________
From: Bruce Manning <brujerman@...>
To: xl7@yahoogroups.com
Sent: Sat, October 16, 2010 12:22:54 AM
Subject: Re: [xl7] Re: FLASH Progress Report

   
Jack,
 
Truly amazing engineering for the Proteus line, not only expanding the memory 
but the possibility of importing other formats is phenomenal.
Keep up the great work.
 
Bruce