30 Mar
2002
30 Mar
'02
2:49 a.m.
Being a hardware guy - I want to know - did you (or Mr. A)
fully emulate a DEC drive (RK05??) or other drive
with a microcontroller ? or did you write a device
driver to support the IDE drive under OS8? Either trick would
be very slick indeed ;)
Regards and congratulations on getting your baby running.
Once and a while you see these Intersil 61xx chips appear
on ebay.. maybe others could duplicate your efforts..
Cheers, Heinz
Re:
From: "Loboyko Steve" <sloboyko(a)yahoo.com>
Subject: "New" PDP-8
I just completed the very nasty job of downloading
the
operating system and a few BASIC programs to my "new"
PDP8, which is built from Robert Armstrong's design.
It only draws about 5 watts, so it isn't a problem to
keep on all the time, unlike others that people on
this list might own!
I made a comment to Mr.Armstrong that I removed the
IBM logo from the drive because I didn't think it
would work correctly with a DEC design. Strangely,
this actually came true to a degree; I had a slow PPI
chip that didn't get data from the drive quickly
enough. I tried to save a dollar buying an 82C55
instead of an 82C55-5.