Support for NEO-8 and NEO-16 mappers

[aoineko-fr]

Hello,

Can you consider adding support for NEO-8 and NEO-16 mappers to WebMSX?

Those new mappers are based on ASCII-8 and ASCII-16 and add:

• 12-bit segment register instead of 8-bit (so max segment go from 256 to 4096),
• Bank register to select segment in memory page 0.

It give more flexibility for developers and allow to overcome the 2/4 MB limitation of legacy mappers.

NEO-8 and NEO-16 are already supported by MSX Pico and PicoVerse 2040 hardware (and more to come) and emulated on openMSX and Emulicious.

More details here: https://aoineko.org/msxgl/index.php?title=NEO_mapper

For testing purpose, you have sample programs of different size here: https://aoineko.org/msx/targets/rom/

Best regards,

[aoineko-fr]

I added a section in the documentation with pseudo code for Emulators and Programmable processor based cartridge: https://aoineko.org/msxgl/index.php?title=NEO_mapper#Programmable_processor_and_emulation