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

You rock man, well said!  Thanks for all your time on this!

rEalm





steve_the_composer <smw-mail@...>
12/03/2003 09:27 AM
Please respond to xl7

 
        To:     xl7@yahoogroups.com
        cc: 
        Subject:        [xl7] LSB/MSB & Bank Switching - part 2: Selecting
E-Mu Presets


In MIDI, you can only have patch/preset change command values from 0 
to 127.  In the days when most synths [aka music-producing computers]
had 128 presets or less, no one needed to do any bank switching.

Bank switch commands tell MIDI devices which set (or bank) of 
programs/patches/presets to use.

Expanding on robotchas's explanation, CC#0 contains the MSB for the 
Bank Select Command, CC#32 (decimal) contains the LSB for the Bank 
Select Command.

Data for each CC [Control Change command] can go from 0 to 127.  So 
with 2 CC locations (that is, MSB - LSB) you can have values from 0 
to 16383 (128 x 128 banks). With 128 presets, MIDI can theoretically 
select from 2,097,152 presets using bank switching (128 x 128 x 128--
if I did the math right). 

E-Mu ROMS [and USER RAM] are identified by logical addresses.  In 
essence, the address of each ROM bank is the MSB/LSB number which can 
be selected via CC#0 and CC#32.

In short,  MSB = ROM ID,  LSB = Bank number within each ROM [or user 
ROM]. 

That is why the display says: >> Bank << MSB and LSB when you press 
audititon.

If the E-Mu display says the following:

Bank  MSB:066 LSB:1  012^1
[note: numbers here are decimal, not hex]

it is telling you:

"Hey, if you want your sequencer to select the current patch, put 66 
in CC#0 and 1 in CC#32 and then send a preset change command value of 
12."

User RAM has an MSB of 00.

Multisetups can be selected via Bank Switching using an MSB of 80 
(decimal).  WARNING: IF YOU HAVE ALTERED YOUR CURRENT MULTISETUP BUT 
HAVE NOT SAVED IT, SAVE IT FIRST IF YOU DON'T WANT TO LOSE IT.
>>> See archives for more on bank switching of multisetups. <<<

==============================================
Footnotes:
Since each ROM has its own address [MSB], the order of ROMS in slots 
0 -> 3 doesn't matter to the E-Mu's User Interface.

I am familiar with Bank Switching in Cakewalk, so I can't tell anyone 
how to do it in Cubase or other software.
==============================================
Hope this helps someone.

Apologies for any errors, oversights, omissions, etc.



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