26 Jul
2003
26 Jul
'03
3:35 p.m.
Thanks for the tip,
If I can learn if this was done or not, and how it was done, I'll
build an "adaptor" to make sure I get the signals around the right way, and
everything else in the correct spots. It's not the first time I have heard
of manufacturers of computers doing this.
The Sinister Dragon.
original
> > contents of the Eprom I can burn it from a
file and test it if
necasary.
> You most likely don't need to go through all
that trouble. Just take
the
> ROMs from any other Apple ][ motherboard and pop
them into this one.
For
minimal system
operation you can just transfer ROM F8. For BASIC, you
also want ROM-D0, ROM-D8, ROM-E0, ROM-E8 and ROM-F0.
I seem to recall it's necessary to be a bit careful with this - the Apple II series (II, II+) used ROM ICs that were
basically pin-compatible
with standard EPROMS, but had an inverted enable line or something of the
sort. Clone manufacturers simply used normal EPROMS. Hence, even if the
actual contents of a clone EPROM is the same as the original Apple II ROM,
you can't swap the two and have it work.