PCM card emulation/Frontal Lobe repair

[Barry L Klein]

In hopes of achieving my goal of inputting my own PCM samples into the
Wavestation AD I got a Frontal Lobe unit with PCM adapter.  But this
didn't seem to work right with the AD .... and.... then I hosed it up!  It
seemed functional in that it had menues in the LCD, loaded files from
floppy, and transferred stuff to the PCM adapter.  But the MIDI didn't
work.  So I opened it up and was debugging the midi when... all of a
sudden ... no display.  Then I discovered that the circuit uses an 8032
microcontroller operating in external access mode - it relies on code from
the battery backed SRAM - there is no EPROM in the unit.  I can't believe
it.  I will trace down the EA enable pin circuitry to see if by chance
there is a test/diag mode set by jumper or something to load the floppy
boot loader etc. but in the meantime, does anyone know anyone who might be
familiar with the circuitry of this thing and how it operates?  I'd much
prefer to just pay someone to make the damn thing work than spend a lot of
time of my own on it.  It was made by Cannon Research (Michael Cannon) of
Grass Valley, CA.   Anyone know where he may be?

Additionally,  has anyone had any success in making SRAM based PCM rom
card emulators for the Korg (or other) synths?   Something along the lines
of a pc to emulator card type of thing.  The adapter I have probably still
works and has an RS232 interface but who knows how to do a file
transfer....

Finally, anyone have a PCM card that will work on the Wavestation AD that
they want to sell?  I could use that as a template for the emulator card
I'll probably have to build up.


Barry