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0 pointsDwedit3d ago0 comments

Game Boy Color has a secret video mode where you can directly drive the LCD from the cartridge slot.

CPU completely halts, so you can't use the joypad or sound anymore.

https://gbdev.gg8.se/wiki/articles/Gameboy_and_Gameboy_Color...

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That CPU halting only applies for PGB mode 1.

In PGB mode 2 the CPU is still able to run (within a limited address range) and can use register FF75 "PGBIO" for limited input and output on some cartridge pins (and/or the link port for IO).

j / k navigate · click thread line to collapse

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bbbbbr3d ago

That CPU halting only applies for PGB mode 1.

In PGB mode 2 the CPU is still able to run (within a limited address range) and can use register FF75 "PGBIO" for limited input and output on some cartridge pins (and/or the link port for IO).

j / k navigate · click thread line to collapse