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

As I expected, Sound ROMs appear different to ROMplers with the P2K 
synth engine and to EOS 4.X Samplers. I am now wondering what's on 
those SIMMs.

I'm guessing, but it seems to me the SIMMS may have various "objects" 
including:
(1) samples (available to Samplers)
(2) multisamples (possible called presets on samplers)
(3) instruments (samples and multisamples available to ROMplers)
(4) presets (available to ROMplers)
(5) sequences (available to ROMplers as demo songs and riffs)

In the E5000 Sampler, my new Protozoa ROM only has samples, no 
presets. The name appears as P123 608 np. At first I thought it was 
defective, but in the ROMpler, it indeed has P2K instruments and 
presets.

As long as I had the boxes open, I tested other SIMMs (Sound ROMS). 
The XLEAD ROM (from the XL-1 turbo) appears as an Audigy ROM and has 
sampler presets as well the ROMpler presets.

I seem to recall someone (possibly Aaron), saying that the baby 
flashes on the SIMMs contain an overlay which organize the samples 
into instruments and presets.

Anyhow, all this leaves me wanting to know exactly what on the Sound 
ROMs--and why the Protozoa ROM has no sampler presets, while others 
do.  

Thanks to any who can help.

--Steve