> The thing I'd like to do is find a schematic for an old 'Trisstick' or
> something that would put me in the right direction so I could hook up a PC
> joystick to my model III, even if I had the Atari joystick schematic, it
> shouldn't be hard to adapt. I've searched google and search engines but to
> no avail, I'm hoping some of the elders here could help me out. I think it
> hooks up to the expansion card, but I'm not sure.
TRS-80 joysticks were generally just 5 switches, one for each of the
four directions you could push the joystick in, plus a fire button.
Pushing the stick diagonally would close two switches. Today's PC
joysticks have something like 8 bits per direction to tell the PC how
far you pushed the joystick, so it would be highly nontrivial to hook
one up, and the feel would be wrong for playing TRS-80 games. I'm not
sure about Atari joysticks -- are they one switch per direction? If so,
that would be more suitable.
The joystick that I emulate in xtrs works as follows. I'd be pleased to
hear about it if someone knows about other TRS-80 joysticks that worked
To read the joystick, input from port 00. The bit assignments are:
North (up) 0x01
South (down) 0x02
West (left) 0x04
East (right) 0x08
To make your own joystick, you will also need the pinouts for the Model
III expansion bus. I think you can find a suitable manual on either
Wade Fincher's or David Keil's TRS-80 manuals web site, but I haven't
checked. Links to their sites are on my TRS-80 links page,
Quote:> I'm also looking for a way to transfer .DSK and .DMK image files to floppies
> as well, the best I can do so far is use XFER/CMD to move individual files.
> Perhaps there's something written for the TRS-80 that can do it once you get
> the file over there.
There is software for that on the PC side. This should be handy for you
since you put a 3.5" drive into your TRS-80, and your PC probably
already has one of those. The most straightforward thing to do will be
for you to get one of the emulators working on your PC, then use it to
copy .dsk or .dmk images onto real floppies. There are some notes on
how to do that on my TRS-80 FAQ page, http://www.tim-mann.org/trs80faq.html.