Game speed: Zemmix vs. NSM8245 with Megaflasrom

I think thats the issue.
I connect the the Zemmix with a VGA cable to my Samsung T200HD, bought this monitor last week second hand on Marktplaats.

I set de DP-switch on the correct 50HZ, amd in Sofarun: Videomode: 50HZ, but when i switch to 50HZ the screen gets an error message "not supported" dutch:"niet ondersteund"

I do not want to use it as SCART but, the screen is very crappy.

My Samsung T200HD does not have a S-VIDEO connector.

Any tips ?

Ok. But how is IT possible that i do not have that
problem on my NMS 8245?

Actually, for most Japanese games the problem is on the NMS 8245, they play too slowly there, not that the Zemmix Neo is too fast .

PAL systems have a 50 Hz display frequency, so the game progresses one step 50 times per second. On NTSC systems the display frequency is 60 Hz, so the game progresses a step 60 times per second. Due to this, if you play a game on a PAL system, even though the CPU clock speed is the same, the games and their music will often still play 20% slower.

The video mode not supported message is there because VGA requires a 60 Hz signal, so if the Zemmix Neo supplies 50 Hz on the VGA output then the monitor can’t display it. It will work via RGB SCART though, if you have a monitor which supports that.

You can make your NMS 8245 run in 60 Hz mode as well: type VDP(10)=0 in BASIC. If you start a game after this (without reset), it will also play faster.

In the MegaFlashROM SCC+ SD manual you will find a list of options for OPFXSD (the ROM flashing tool). Among those there is a /H50 and /H60 option which you can specify, so that you can make it switch to the 60 Hz (or 50 Hz) frequency before the game starts.

Also in MSX-DOS2 you can use either the HERTZ command or the 50HZ and 60HZ tools to switch frequency without going to BASIC.