> and instead presents white, yellow, blue and green coloured bars as shown in this video: > https://www.youtube.com/watch?v=jH9Xt0FgH8s.
MAME only shows that because the original boards display that. It looks like your monitor isn't syncing properly when they would be displayed.
Do you have a 15khz, 31khz or dual sync monitor?
Are you using the Jamma edge connector or JVS inputs?
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