Emax

> Hi,
> The Route66 upgrade will be cool if it works out, but how do you propose
> duplicating the memory settings in the Emax II EEPROM that the upgrade
> diskette sets and making new memory addressing PAL chips which sit on the
> daughterboard to enable the larger memory size to be addressed?
>
> Regards
> Rob
> The Emulator Archive

I'm not involved with the Route 66 upgrade, but I might be able to shed a
little light on things...
The PALs can be easily reverse-engineered.  Quite simple.  Pull the PALs
from a known good 8M Emax II, power them up on a test bench, then feed
inputs in and see what comes out.  That lets you make a function map, which
you then use to blow new PALs.
The EEPROM is trickier, because (apparently) it contains *all* the options
for a given instrument.  What I'd be inclined to do is just copy the EEPROM
from the 8M machine, and distribute it with the upgrade.  OK, you'd lose
your calibration, headroom settings etc.  Big wow. At least you'd have 8M to
play with...
Of course, the other thing would be to reverse-engineer the software, and
bypass the "protection" for the EEPROM editor in the Master section.  This
could be tricky, but there again, see http://groups.yahoo.com/miragehack for
a similar project...

HTH
  Gordon.