funkyguy4000:
So there may be an unknown internal connect?
I don't know what's going on yet...not had much time to play but I found that if I read 20 bytes starting at 0x00 (picture reg.) it frees the IRQ pin which should clear with a read of 0x0E (it doesn't)
There's something dodgy going on with the way I'm reading the bus using wire...but it works fine for the first 15 bytes...f*!k knows what's going on but the good news is at least I now know that the IRQ works OK to some extent which frees up continuing with four screens.
I must say though that I may just use the MCU to control the whole lot and ignore the chip interrupts. It should be easy enough to get everything synchronised. (I hope :D)