On 2/28/17 1:43 PM, Jim Brain via cctalk wrote:
On 2/28/2017 12:17 PM, Ethan Dicks via cctalk wrote:
It sounds like he is contemplating a battery-powered tape drive
emulator that plugs on the outside of the machine for users to use
without opening their boxes. It would then be portable to other
machines. Sounds like a great idea.
This year's CocoFEST is open to all TRS-80 models, not just the Coco,
and I noticed that many of the models have a similar cassette port
connector (I think they have variations on the format), and so I
thought of a neat project that might be of interest to all of the
participants of the show.
The TRS-80 used two formats! THe base 4K with 4K basic was a slower
format than the 12K basic machine.
The MM100 was a modem (bell 103 compatable).
The pocket computer was again different I forget the format.
COCOs I think were not all the same.
Lots of ground to cover.
Allison
As you note, picking off 5V from inside, while entirely possible, is
far from optimal, and a uC is the intended recipient. Besides, as
Tony implies, I should know this stuff, but I have indeed managed to
move along in my efforts for so many years without needing to use a
comparator :-)
