Quote:
Originally Posted by ross
Are you referring to PFxPx in BPLCON2?
There are some combinations that produce strange effects on OCS, see "Undocumented Amiga hardware stuff" thread.
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I checked and this is what Tony Willen reported in the thread. I quote and underline. Thanks for noticing it :
Dual playfield:
Any number of planes. No 5+ requirement here.
If playfield's matching BPLCON2 PFx value is >=5 and if playfield is not transparent, it is always drawn using COLOR0. PF2PRI still work normally, only color selection becomes strange. (Used in Running man / Scoopex intro's logo). If both PF1 and PF2 is >=5: both playfields disappear, only background color (and sprites) are visible.