Damjan Marion 
Hi, Seems that only OM3 and OM4 signals are connected to HDR on tiny6410 and by default they are pulled up to 1. According to datasheet all supported combinations have OP4=1 so I wonder what is the purpose of having this signal connected to HDR and not having OP1 and OP2? Also on tiny6410 SDK schematics I can see that OP3 and OP4 are connected to switch S2, so it looks to me that something is wrong. Any comments? Thanks, Damjan