On 5/4/2017 6:16 PM, Terry Stewart via cctalk wrote: >> If these are from a VAX, could they be microcode disks for a 11/780? > There was a RX01 attached via a LSI-11 as console. And yet, if there were an RX02 somewhere on this VAX, I don't believe you'd be able to read them at all... RX02 seeming more likely with a VAX. - J.