>Hmm, I've just had a look at vidhrdw/a7800.c and it looks like it is >handling the palette bits correctly in all 320H modes. What version of MESS >are you running? 0.88 - Try running any of the programs I've posted recently (7800kern.a78 galaxy.a78 or robo.a78) they all use 320B but use full palettes so if the colours look correct there's a problem (which there is). In paticular, if the interior webbing of the scroller is blue (it is when I run it), the blue colour is coming from palette 1 where the border red is from palette 0. On a real 7800 the webbing is red, as it should be (at the time, I didn't realise why and just assumed my colour selection was off) Chris...