I can only confirm that MSPLAN works with no option rom installed.
Could be either bad ram or bad rom. There are two rom chips inside
besides the option rom socket outside. Or anything else like a corroded
trace making a stuck address line. These units all have leaking caps and
batteries by now, even if they are still working.
Don't be loath to open it, run to open it to arrest the development from
getting worse as soon as possible.
--
bkw
On 8/5/24 09:51, B 9 wrote:
That's actually pretty cool and I'm curious what GTE's firmware does.
What software version are you seeing?
I'm not sure why they would overwrite MSPLAN yet leave it in the menu,
but if they added an "option ROM", I believe you can run it with `CALL
61167, 2`.
—b9
On Sun, Aug 4, 2024 at 6:10 PM Tom Blum <[email protected]
<mailto:[email protected]>> wrote:
Hello,
New to the community and apologies if I'm raising a question/issue
already addressed. Just purchased a working T200. Power cycles
nominally and shows classic menu options. Selecting Multiplan from
the menu places the T200 into a frozen state. LCD screen appears to
fill (shaded) completely but program does not start, no visible
text/graphics. Resetting and power-cycle necessary to get back to
the main T200 menu. Noted that this T200 has a property label on
the bottom indicating that GTE, Inc. (the telecom company) was a
previous owner and appears to show a unique GTE software version #.
Is it possible that the original/built-in Multiplan ROM was (or
could be) removed from the T200. As a newbie to the T, am loathe to
open up a working unit to see if a ROM is missing. Is there a past
or present ROM option module for the T200 that would have Multiplan
installed (or installable)? Tom
--
bkw
