To find your firmware version:
Press Command, then Env 1 (Display then says:) "NO COMMANDS ON PAGE", but ignore this.
Scroll right until you get to "SOFTWARE INFORMATION", and then press Enter.
Displays current "RAM VERSION" (O.S. version you are using). Press Enter again
to display "ROM VERSION" (this is your firmware version). If you don't have an
OS disk, the only way to determine your firmware/ROM version is to open up the
top lid (4 hex screws) and inspect the two EPROM chips labeled "UPPER" and
"LOWER" on the main board. It may take some force on the left lower side. The
version may be printed on the chip labels. If not, then guessing is all that's left.
Take a picture and send it to me, and I will try to decipher the code. At least 90% of
EPS's that I have seen can use OS V2.49 (ROM V2.40). I recommend trying V2.49
first if you are not sure of the ROM version. The wrong version will not harm
the machine, it will just shoot an error such as "INCOMPATIBLE OVERLAY".
If you are getting the error "DISK NOT FORMATTED", or "DISK DATA CORRUPTED"
you may have a faulty or dirty disk drive. If you found a thin 1/2" square of
metal roaming around inside of your EPS, it fell off the top of your disk drive.
It is a counter weight, and should be glued back on (center, top of drive - look
for the glue mark). I've seen a few drives that did not work properly without
this metal square in place. Plus, electronics do not like little metal things
randomly landing on components!
It's also a good idea to blow out
the disk drive slot with compressed air if you are getting errors, as dust and
hair can collect in there over the years. Replacement drives are out there for
about 50 bucks, but may be hard to find. They are NOT the same disk drives that
went in your old Windows 98 PC, though they look similar, so don't be tempted.
They came with NEC disk drives. A good place to start is TheSoniq:
They are a great source for parts and ROM IC upgrades.
The original classic EPS requires a boot disk to start up the machine. It also asks
for it during certain operations while running.
I used an EPS as my main sampler/sequencer for 13 years and recorded many
songs with it.
Click here to hear some of them.
It's a unique and intuitive music workstation. Save your work often!