10 Dec
2015
10 Dec
'15
8:10 p.m.
On Thu, Dec 10, 2015 at 5:22 AM, Joseph Lang <joe.lang.0000 at gmail.com>
wrote:
It's simple to convert the h9270 q18 (11/03) to
q22. Just wire the
additional address lines. It took me about an hour to do mine.
Don't put an 11/03 in it after conversion. The added lines are not
addresses on the 03 CPU.
Joe,
I saw some pics about this a few weeks ago. I'd tried it twenty years
ago, but didn't succeed - will have to find that backplane that I'd started
to modify and try again. Would you happen to have notes or references
about how to do it?