Canon V-30F MSX2

64kB vram addon now installed and working

Popolon, can you enter the OUT255,1 instruction (without no cartridge inserted) and tell if it has any effect?

It is to know if there is really a memory mapper.

I gave that "out 255,1" command and the V30 rebooted.

Thank you, so there is a memory mapper even with 64kB only.

I've also seen it can be upgraded to 128kB.
I think JP1 and JP2 are used to add the 64kB of RAM and JP4 and JP5 for ROMs, but it's need to be checked by following the tracks. Maybe you already know how to do it.
I saw that Canon also used ferrites in addition to 100nf capacitors for RAMs, which is rare.