[sebhc] H89 roms
Lee Hart
leeahart at earthlink.net
Thu Dec 15 20:39:45 CST 2005
Robin England wrote:
> That's great news about the MTR ROMs, Lee. I'm waiting anxiously for a copy
> of the 444-142, but there's no pressure... ;-)
>
> BTW, does anyone already have binaries or logic diagrams for the PALs used
> as memory and I/O map decoders (U516 / U517 / U550)? If not, perhaps we
> should look at 'probing' these?
They are not PALs, they are PROMs. I have the binaries for these, as well as
the programmer for them. The address decoder is 32x8, and the I/O decoder is
256x8.
--
Lee A. Hart 814 8th Ave N Sartell MN 56377 leeahart at earthlink.net
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