Some problems but its working, you will see much ball/flipper transparency/flicker with cpu cycles that are too low, monster rig is advised for this one 😉

working

funky

sorry for multiple posts having problems with attachments.

Working is 15,000 Cycles
Funky is 7,700 Cycles

Attached dosbox config

Well it's a more a problem with the vga emulation that the screen is drawn to quickly and games thinking they still have some time before the lower half of the screen still needs to get drawn

Whoa. WHOA. VGA emulation too FAST?!! 🤣

Yeah On a real pc the drawing of the screen is process that takes time.
Dosbox draws the screen at once but keeps the virtical retrace active for the time the drawing takes on a real pc. (else many games mess up)
So games wait for the virtical retrace wait half a period and change the pallet. or change other things.

In dosbox this doesn't work as the sreen isn't updated any more

So,
If the processor is fast enough, game has enough time to draw things
correctly during the vertical retrace. If not, it uses time during screen drawing.
That explains why raising cpu cycles helps.

Hmm, wouldn't it, in some cases, help to draw complete screen at the end of the drawing period?
(only if game doesn't alter the upper part of the screen in similar fashion)

So, Qbix, if i understood it correctly, you mean VSYNC is always off under DOSBox. That might explaing some nasty tearing i was getting.