EPROM emulator

[Mike Pitts]

<<Of course, any ALDL based design requires a custom code 
fragment in the EPROM.>>

And don't forget a custom PC program for sending the custom 
ALDL command.

I've written 68HC11 code to do this already.  It's written 
for an '8625 though, no guarantee it will work in anything 
else.  It writes to RAM ($0000-$08FF) and on-chip EEPROM 
($0E00-$0FFF).  It uses a modified form of the ALDL command 
which is normally used to turn on/off DI's, set values, etc.

It's not complete, but is operational.  I plan on finishing
it when I finally have my new engine installed for tuning and 
a wideband O2.

How about a double-E in the eprom socket with the required 
lines added (or the EPLD)?  Would that be very difficult?
(My EPROM is 512kbit BTW)

-Mike