[sdiy] E-Drum antics, EPROM data dumping

[john mahoney]

[snip]
> I just got a "Willem" EPROM reader/burner PCB recently, so I figure
I
> should use it to try to rip the data off of the ROMs. By studying
the
> ripped data I hope to understand how the audio data is formatted on
> there. But even if I can extract the data off of the ROM... I'd
expect
> it'd look like hex or binary gibberish to me. I really wonder how I
am
> going to recognize audio data by sifting through the contents! Time
to
> get my windoze machine out of the mothballs and onto the bench!

The data format? I'd *guess* that it's 8-bit uncompressed digital
audio. (Hmmm... linear or exponential conversion?) The E-Drum seems
too old to have sufficient processing power to handle compressed
audio. You should be able to copy the data into something like
SoundForge -- and vice versa.

Sounds like you made an excellent purchase. Have fun!
--
john