Jay West wrote:
Dave wrote....
Thanks for the inf<snip>
Most pick systems would boot up right from the hard
drives, the tape
was only needed to install a fresh system.
I assumed his mentor would be wiped, or he'd want to find a sysgen for
it or it would not be very
interesting.
I don't recall if the Adds Mentor 2000 was a
firmware implementation
or a software implementation. I found the software implementations to
be much more fascinating/fun.
Jay
The only firmware machines would be Microdata, Evolution /
intertechnique, Irvine Computer Corp, Ultimate.
Pick's move to Open Architecture pretty much doomed the firmware
approach, due to the changes needed
to adapt to the new requirements of virtual, and the time it took to do
implementations of firmware machines.
Ultimate did co processors for honeywell level 6, Dec, and vax
(different for the VMS). their tandem
machine was bought from the australians (along with a friend, Dave Rose)
and their mainframe implementation
was bought from SMI, chicago, along with my friend Dale Tyler. both
ended up in mainline
pick develpment after that.
Ultimmate also did a ground up port with a different software approach
to the running of pick on top of
unix. rather than have the virtual "frames" of code and executing the
assembly, you ran a big build that
retained the data needed in each objectframe, more or less but
translated the whole lot of the pick
assembly code to C, them made one massive 32mb HP or RS6000 executable
with all executble
code.
It was more stable to translate that way, as the executable was just a
huge application to the unix
system, and required no real access to execute code. It took a couple
of releasees to get it
running fast enough, but it is still being used by at least a couple of
customers today, on HP.
Interesting way to translate an assembly architecture to be hosted on a
Unix box, as all pick
systems ended up.
Universe and Unidata were ground up implementations, and were all C, I
believe. Revelation
was assembly or c, i think, and is still around as well. Revelation 6
is the dos lover's
dream pick system. two 1.4mb floppies, and you are runnning pick on
dos 6.2 . of course
it is now advanced revelation, but I still lliked the original Roger
Harpel version.
Jim