Roland S-770 S770 Turbo Rom Firmware sampler

Programmed on to new one-time-only ATMEL 27C256R Not available elsewhere, right now, the last OS Rom revision for the S-770 Sampler.

This will improve speed of menu redraws and optimizes midi timing.  The original Rom was on 128k chip so the code has been significantly expanded. 

To get the whole turbo treatment you need to upgrade the CPU and the clock - can talk you through how to do this, if you so desire.