Hello everybody,
I'm trying to burn my own drum sounds onto my Cheetah MD-16.
The sounds are stored on 2 x 40pin Fujistsu MB834200A 4mbit (512kb) mask ROMs
After doing a little research looking at the Cheetah datasheet it seems that the M27C400 EPROM is a direct replacement.
I went and bought a 16bit adaptor for my Willem GQ-4X programmer and read out the EPROMs (telling the software that the chip was a M27C400). After opening them in Soundforge and fiddling with the RAW import settings I got a fairly decent waveform, which obviously is lots of drums one after another. (Setting was 16bit PCM/Signed/Little Endian-Intel) None of the other settings/samplerate/bitrates worked - I tried for ages.
The drum sounds are there but they are very distorted, and all digitally messed up, I just wondered if anyone here could help decipher what is going on here, or give some pointers on how to decode these sounds, and encode my own.
I have zipped up the binary images from the 2 Sound ROMs and uploaded them to Mediafire - In case anybody fancys having a crack at decoding them.
http://www.mediafire.com/?qjiqhmd42mbThanks in advance for any help guys.
Julian