Oh yes...I was thinking about 2+, sorry

Quote:

his only works on machines with such a device of course. So, not for MSX2

That's the reason why I haven't be able to found the F4 device, I usually boot the NMS8245 profile

I've changed the MSX2+ profile and works fine. On OpenMSX it's the same, I tried to change the Philips profile adding the device, of course it doesn't works.

So, how can I skip boot on MSX1 & MSX2 machines without patching the ROMs?

You can't. As I said, you'd have to add an IPS patch to the config file e.g.