Also the Indivision ECS has direct memory access now with the new firmware. You can do up to 1024x768 true 12 bit with a 15/16 bit internal memory setup. They have a picture viewer that supports this mode. A3000 might work well with this but I doubt a simple 68000 would be very fast.
Here is a previous thread on the feature.
http://www.amiga.org/forums/showthread.php?t=51354&highlight=indivisionHere is a brief overview again.
following features:
- 8-bit, 15 bit, 16 bit chunky pixel modes (15 bit & 16 bits are converted) to 12 bits.
- Resolution from 320x200 to 1024x768.
- Video memory can be directly described by DMA chipset (up to 7,15 MB / s)!
- Sprite for hardware cursor.
- Addressable storage for multiple video image buffer.
- Dual screen on two Indivision ECS.
Also it looks like a new ECS mode 800x600 with 16 colors is in the works..
Pretty cool. I hope something good comes from it.