Hi:
Glad you liked it.
I used the program in the PDF, copied the text and used a free Basic compiler.
To make the big EPROM, I just make 8 banks of sounds using the program, as if I where to burn 8 27C512 and then joined them using an HEX file joiner (also a free one).
I have to look for the file of the faceplate design, is in Corel Draw... I'm not sure where I have it as i did it with a friend in his house, I think I have a copy somewhere...
The feel of the switches isn't very good, they feel like tact switches, they aren't good to play drums when you want to do Tap Write... they are OK for Step Write. But they look so good :)
I want to say that I'm from Argentina, and here there is not much components, hardware, etc too choose from.
About the problems I encountered... Making the Mods was pretty straight foward... The making of the cabinet & faceplate was a nightmare, making that all fits was very difficult... A lot of trial and error...