25 Nov
2009
25 Nov
'09
2:11 p.m.
On 11/25/09, Alexandre Souza - Listas <pu1bzz.listas at gmail.com> wrote:
No microcontroller required - it's already just a handful of TTL chips.
-ethan
I've found
reference for those as well as a mention of a diagnostic
ROM set. I would like to be able to put together a box with 4x or 8x
the normal ROM, use modern ROMs and burn all known booters rather than
hack on my one-and-only MR78. Fortunately, it hangs off of a DB25, so
it should be trivial to redesign and build in the same space.
I'd do that with a microcontroller, an EPROM and like :) Nice project :D