Updates...
1. Since I got a real AES system, it was also decided to make a custom multi-game cartridge for it.
here you can find information on reverse engineering the AES V3 cartridge as well:
link
2. I started compiling a set of games that will go into a custom cartridge. It was decided to take only original ROMS no Chinese +++ or other crap. A few good and stable bootlegs like Crossed Swords 2 (CD conversion) have also been added. I also added a couple of modern games like xenocrisis and teot as well as a 240p test suite.
3. I ran into a lack of space in the flash chips on one cartridge. Even if I throw out games that are unnecessary in my opinion, there is still not enough space for a full NEO GEO romset on one one cart. Therefore, it was decided to make TWO romsets. first - game-series like Metal Slug, KOF and Samurai Samurai Shodown. and second - everything else.
4. I programmed the P-ROM, S-ROM, and M-ROM, as well as the CPLD's, and started testing on real hardware. There is no sound and C-sprites yet, since I still can not program C-ROM and V-ROM (no PCB's). But the overall result is good.
Stay tuned.