#: 14441 S10/OS9/6809 (CoCo)
29-Feb-92 10:13:13
Sb: #14437-#Deskmate
Fm: Kevin Darling 76703,4227
To: Ian Hodgson 72177,1762 (X)
Ian,
Hmm. Deskmate must sleep a lot between reading mouse/joystick (like CoCo Artist
did). Would have to track it down.
The hires mouse driver is in CC3IO. You're right: it tells the hires interface
to begin charging a capacitor... and the driver shuts off interrupts and counts
in software until ramp meets the joystick position. If the mouse is in the
lower right corner, this can mean irqs are disabled for a very long time (I
think up to 10ms or maybe more). Therefore, when doing nothing else, it's best
to move the mouse to the upper-left corner where the delay is negligible.
kev
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