Eprom Emulation

[Bill Shaw]

The problem here is writing into the 'new' section of memory while runing
from the 'old'.  2 separate chips would make the design much simpler,  with
write access allowed only to the off line chip.

bs


>I also had a 93 Jimmy withthe 200HP Vortec 4.3L V6 and a P4 pcm...
>I had a 6 in 1 JET chip... it was basically a 27010 chip with 6 programs
>burned into it (top 256K was empty).  The lower address lines went to where
>the stock address lines did, and the data lines all went to the PCM.  to
>switch programs, all you did was toggle one of the 3 higher address lines
>to select the 128K bit block you wanted...  How about an Emulator that
>follows similar lines?