SaschaFFM wrote:I would have an extra VGA-Scart Cable that I could spare:
Thanks for the offer, but I'm not at Europe and don't have any TV or monitor with Scart input either

May be an Svideo or Component adapter can be useful. Somebody sell these?
telengard wrote:I haven't seen it mentioned in this thread, but I get a "resolution not supported" on my HDMI tv when loading up the core. I haven't seen that with any other cores. I thought I read somewhere a custom resolution was being used, but I can't seem to find that reference now.
The custom resolution, or more precisely, a minor variation of a standard resolution is used only at 50Hz. It is possible your monitor doesn't accept it, or might be your monitor doesn't support 50Hz at all.
By default the core follows the original refresh rate, and currently it starts at 50Hz as a consequence of the TOS version. There is a configuration switch to force to 60Hz video output. But without any video output you might not be able to apply the configuration.
Can you connect any other monitor temporarily? That would be just for the purpose of setting the configuration to 60Hz. After that configuration is saved you can reconnect your original monitor. Otherwise I will try to find a different workaround for you.