16 Nov
2015
16 Nov
'15
2:25 a.m.
On Sun, 15 Nov 2015, Bob Rosenbloom wrote:
I was contacted by Micheal D. Cranford from the
Tektronix Museum up in OR
about
a design for a ROM module for the Tektronix 4051 graphic computer. It looks
to be a very
useful item. See the description below. He's looking to build up some of them
and make them
available. Cost would be about $100 each, assembled. He needs seven people to
make it
worthwhile, I would take two, so we need five more people.
Something similar has been done over 30 years ago, see
ftp://ftp.informatik.uni-stuttgart.de/pub/cm/tektronix/tek4051/backram/
The module is called BACKRAM, and you are supposed to load the contents
with RAM_LOADER.PRG. We use the COMBIROM file that has many very useful
routines for tape and CBM disk handling. I've attached a CBM 8050 drive to
the Tektronix 4051. To use the BACKRAM I only need one tape cartridge that
holds the loader and RAM image.
Christian