If you don't mind going inside that sounds like the easiest way; just pick a row or column of the keyboard and put the joystick switches in parallel with those switches
On Tue, Sep 23, 2025 at 11:10 PM Doug Jackson <[email protected]> wrote: > Years ago, I ran a set of wires inside the machine to allow the joystick > to simply plug in an Atari joystick. > > When I get home, I'll refer to my notes from the mid 1980's to see what I > did. > > Doug > > > On Wed, 24 Sept 2025, 1:01 pm Mike Stein, <[email protected]> wrote: > >> Couldn't you just scan the printer port looking for 1 out of 8 switch >> closures?. >> >> m >> >> On Tue, Sep 23, 2025 at 9:42 PM Scott McDonnell < >> [email protected]> wrote: >> >>> I am back to thinking about a joystick for the Model 100. I have a >>> specific reason in mind and even a specific joystick. >>> >>> My intent is to target the Atari/Commodore 64 digital joystick interface >>> mainly because my inspiration is the Suncom Icontroller which mounts to >>> the side of the machine. >>> >>> This interface is a series of 5 discrete switches to control direction >>> and a fire button. Very basic. >>> >>> While the parallel port would have been ideal for something like this, >>> it is not bidirectional and offers only two inputs. >>> >>> The serial port provides 3 inputs; still not enough >>> >>> While some multiplexing strategies might allow this to work, both of >>> those ports are also often used for other important purposes. >>> >>> So I started thinking about the barcode port. It only has one input, but >>> the joystick could be encoded into a serial stream. Maybe even using the >>> original barcode drivers. I don't know the specifics of the BCR >>> implementation here, but often they are just keyboard wedges. >>> >>> Any thoughts on this or a better solution? >>> >>> >>>
