Road Runner test mode?

As I am on an 8080 kick I grabbed a Road Runner to test. Mowermans old page
says switches 7,8 off is test mode. Setting them and booting results in a
modified rug which eventually ends. It ends up with a set of vertical bars
and nothing else.

Anyone know how this test mode is supposed to work?

Thanks,

David

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Received on Tue Feb 26 22:15:15 2013