Let's call it Maximig :-)
Seriously, my remarks:
- 2GB of Chip RAM will break compatibility, the Amiga architecture is limited to 8 MB of Chip RAM due to the memory map.
- To limit the the number of I/Os on the FPGA you can use the 040/060 in multiplexed bus mode (32 wires for address and data instead of 64).
- A coldifre is less expensive than a 040/060 and you can achieve a 100% accurate emulation (not the illegal instruction hack) with an average of 20 CPU cycles per instructions.
- A drop-in replacement of an A4000 board will be very expensive because of the board size, most of the PCB will be empty since the FPGA can integrate most of the A4000 components.
- Using a off-the-shelf evaluation board is less expensive: Altera is selling its NiosII evaluation kit WITHOUT the software for $395. The Altera FAE told me that the new Cyclone III NiosII evaluation kit should be available for December. It should integrate a VGA output. The price is still $395.
