Posted By
MMS
on 2023-10-26
18:39:44
 |  Re: PS/2 mouse on Plus/4
Great news!
But how can it work? PotX and PotY are not connected on the schematics (#5 and #9 pins) to DB-9, so there are only directions, but no potmeters can provide the info about relative movement, or faster /slower movement of mouse.
Still, it is great to know, that PS/2 mouse can work with Plus/4 in this way
As I see it does not require any special SW on +4, it will behave like a joystick, or an 1350 mouse (which in fact works as a joystick) or an 1351 mouse in 1350 "joystick" mode.
https://www.msx.org/wiki/Commodore_1350
I agree with Litwr about the drawback level of the missing mouse support (next to the non expandable memory  )
BTW I suggest everyone to check out Cool News 4 for a great software sprite cursor and an accelerated mouse emulation on joystick/cursor.
https://plus4world.powweb.com/software/Cool_News_4
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