Posted By
gerliczer
on 2023-10-27
03:03:52
|  Re: PS/2 mouse on Plus/4
Litwr wrote: IMHO the lack of mouse was the biggest drawback of the +4.
How so? I think that lack of hardware sprites, lack of good sound capabilities, lack of memory expansion, lack of external DMA capabilities and lazy video circuitry design (falling back to single clock for TED memory accesses) were much-much more severe drawbacks than lack of mouse support which wasn't widespread practically in any 8 bit computer system.
Spektro wrote: It worked well but you can't detect the speed of the mouse movement.
Which is not surprising at all as digital joysticks cannot provide any such information by design.
Spektro also wrote: The problem is that the Logitech's USB receiver doesn't wake up fast enough to send the right mouse button down signal to the PS/2 mouse to 1351 mouse adapter and the adapter remains in the mouse mode.
That could be improved with some not too complicated modification of the adaptor. Put a momentary switch on the VCC or Reset pin of the microcontroller. With that you could power up the system and after establishing the connection with the mouse you could reset the adaptor and have it restart in joystick mode.
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