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John Ioannidis

01-04-2016, 08:07 PM
Was the protocol that the hp41 CPU uses to communicate with the display ever documented/reverse-engineered?

I have a couple of 41s (one fullnut, one halfnut) with broken LCDs. It would be fun to build an external display using, say, B7971 nixie tubes Smile

/ji

Monte Dalrymple

01-05-2016, 05:02 AM
The spec for the display driver is on the Museum DVD.

emece67

01-07-2016, 07:53 PM
And also available in TOS.

Regards.
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