Re: I found it! A very sorry looking MK14.
A couple of things I notice about the document in Tim's link in #268, one is the claim that the VDU is 'full ASCII' which is a bit disingenuous when the reality is upper case only and 64 characters altogether.
Another is the reference to 'adjustment' of issue I, II and IV PCBs to make way for the projected 2K memory expansion (meaning, presumably, removal of the unwanted PROM images on those versions). It's interesting that issue 1 (which I have never yet seen) is mentioned but issue 3 (which I thought I actually had seen) is not.
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