I have a Commodore PC 30-III with a Cirrus ISA VGA card in it.
I wanted to connect to an HDMI display by using a mini VGA-to-HDMI converter
The converter doesn't generate any output. The machine works when directly connecting to a VGA monitor. The adapter also works when I use with an i3 laptop. The manual says that the smallest resolution it can handle is 800×600. Can it be that this card has smaller resolution? Is there a way to see what is my screen resolution in DOS? What else can cause this?