I own an E5000 Ultra sampler, and an XL-1 sound module. I've been spending a bit of time looking at the sound ROM of my XL-1... physikally that is...
The printed board says: "32MB SOUND FLASH SOUND ROM"... hmmm... it seems as if the board was designed to be used with both FLASH and ROM chips....
I checked the SHARP memory chip on my XL-1 ROM... and i checked the chip number on the net... yep!... it's a 16MB FLASH chip!

Surely I'd like to erase that FLASH SIMM!... and put my own samples and instruments into it! ... so I tried to auther a bank into the FLASH SIMM... E5000 says that it can find no FLASH SIMM!!?? ... what the!!....
I assume that both E5000 Ultra, and XL-1 has some sort of "ROM flag" saved on the FLASH SIMM, so that it is treated all like a real ROM... I just wonder if any of you have tried to erase such a board with success? ... I've written E-mu about this, and hope for an answer I can use... just wondering, if this "ROM checking" mechanism of E5000 Ultra is perhaps not present in earlier EOS versions, like perhaps v4.1 or something...
What a waste of rare FLASH SIMMs if this cannot be undone!

Regards, Razmo.
P.S. I'll keep you informed if I get any useful information.