Screenshot tools - Anything else out there like the Konami Game Master?

I'm pretty sure I've seen some in the past... Maybe Turbo 5000 was one of them? I've not tried that, but I remember reading that it allowed dumping the screen to MSX printer... Not sure about the disk though.

Please note how ever that such programs work only with limited number of games. The VDP registers are write only and if the games don't document (ie. trough BIOS) how they use the screen, the picture will most likely come out corrupted. It might also be that the game does not allow the capture software to run at all or it crashes when you try... best way to know is anyway just to experiment and maybe try few different if available.

MSX emulators naturally don't suffer from such limitations... ie. in openMSX you can use "save_msx_screen"-script to capture the screen in native MSX format. How ever if there are some VDP tricks such as screen split used to draw the screen (usually problem only on MSX2 games) then this might give weird results as well. In this case your options are pretty much limited to "traditional" screenshots such as using camera, video capture card or taking bitmap screenshot on emulator.

Yeah, i temember the amiga having the action replay cart. It was escellent, screen capture whatever you want and even cheating (not that i ever used this option ). I so hoped something like that would be made on the msx. And like nyyirkki wrote, i also vaguely remember the turbo 5000 cart could make screendumps. That was the closest to the action replay.

Didn't Cheatmaster from MSX Engine have a screendump feature?