Experimental sid support
Split the concept of hsync, vsync and composite sync. When composite sync used tie vsync high. The offset hsync pulse of pal/hsync is only present for 15khz composite sync. Remove rom selection since its unused.
Paddle on mist a800. Added NTSC palette. Added support for 4k and 8k roms to 5200 - need to wire up to cartlogic really...
Merged turbo freezer support from Hias. Working pretty well. PIA freezing not working yet though, so no joystick after freeze. Scoll lock to freeze.
Merged in first cut cartridge emulation support from Hias. Excellent:-)
Reconnected up the scandoubler on de1. This required sharing the pokey mixer to fix in m4k on de1. Also some work on using better pal/ntsc settings on de1 (not yet working)
Fixes for 5200 support. Now working:-)
Making a start on 5200 support. GTIA needs to expose full consol output for this. So far just removed chips from custom top level and made address decoder adjustments.