Neon64 WIP 2024-06-22

More MMC5 support:

• Extended attributes
• PRG RAM mapping, 8K saving
• Multiplier
• 4K CHR bank mode

The Koei games generally work, Uncharted Waters is playable!

Just Breed and the SimCity prototype seem ok!

Metal Slader Glory works, but I think it needs a mid-frame palette change for the dialog area to show the correct colors.

Note that only games with 8K of battery-backed RAM can be saved, so these EWROM games which require 32KB saves will not save:

• Aoki Ookami to Shiroki Mejika: Genchou Hishi (Japan)
• Nobunaga no Yabou: Bushou Fuuunroku (Japan)
• Romance of the Three Kingdoms II (USA)
• Sangokushi II (Japan)

Sums $8f105519 $7e394f61

Full Changelog: wip-2024-06-16...wip-2024-06-22