Yes, "joystick mode" is complicate, as the mouse must use again the J column instead of K column for the directions. Also the principal Fire Button on "Joystick mode" has to be in J column to allow old games to read it. I think the best solution is, when in "joystick mode", to move the "Right Mouse Button" from L column to J column, leaving the "Left Mouse Button" on K column permanently. The original Boxsoft interface searches for the "Right Mouse Button" on L column, but no problem as it is "Mouse mode".

In "joystick mode" the "Joy1" port of the interface conflicts with the mouse port if you move a plugged Joystick at the same time. I think only disabling the common at Joy1 will work, but it's not a big problem if you leave quiet your hands...

Can it be done?

I've been thinking.... dangerous....

Now I know that only disabling the common on Joy1 is insufficient to isolate completely that port.

It is because internally in the joystick two direction switches  can be combined when the stick is on diagonals.  Then the two signals of the switches are joined by the common even if it is not connected.

Then, in "Joystick mode", although only pressed one of these virtual switches by the MCU, the Enterprise will read a diagonal.

But you don't disconnect the direction lines on Joy1 port. Is inside the connected Joystick where two direction lines joined in diagonal can be bypassed by the common(the disconnected  KB_J line).

This can affect the behaviour of the mouse in "joystick mode" if somebody fiddles a joystick plugged on Joy1 port.

I'm sorry. I'm only looking for perfection.....

Again, you don't need to disconnect all four direction lines, only two of them to avoid the use of diagonals. But that is not neat...

Now I realise it, thanks.

I had forgotten for a moment the strange control ports the Enterprise has, and the complicate task to make them standard.

I would want two. They will be my dream come true....

I also would like one!

I need least two.

About how many will be the price?

Hi Pear,

Definitely one here.....

Russ