Hello- I'm trying to come up with some replacement CPU chips for the Roland SH-101 -- in the past, I've been successful cloning 8048 and 8049 chips for the Korg Polysix, but trying to use the 8749 (user programmable version of the 8049) in the SH-101 is not working. Does anyone have an 87c49 lying around that they would sell? Thanks. ~GMM