DX7 "Special DX"
I recently bought a DX7 which displays the following message on boot
up "Special DX Version 9.5". I opened up the machine and found an
expansion card had been installed. It's not a Grey Matter E! card, (I
have one of those and it has a different boot up message), this card
is also larger and has a ribbon cable attached although it does seem
to be connected up pretty much the same as the E! card and the
circuitry is similar but it has only one EPROM (labeled SYN 9.5)while
the E! card has two EPROMs. If anyone has ever heard of or seen one of
these I'd appreciate any info on it.