Xp + Fup2 s.e.components
Hello,
does anyone have a datasheet of the MM5740 keyboard encoder, formerly made by NSC (around the late 70s)? It was used in early versions of the Apple II, but later replaced by another encoder since it became obsolete...
Thanks,
-- Dipl.-Ing. Tilmann Reh http://www.autometer.de - Elektronik nach Maß.
Not a data sheet, but the MM5740 is mentioned and drawn in a PROM application brief ( 4 pages) in the NatSemi Memory Applications Handbook (1978). There is a hint that it is a precis of an app note, AN-80, "MOS Keyboard Encoding" by Dom Richiuso.
-- Tony Williams.
Tony Williams schrieb:
I have neither that handbook nor that app note...
Could you provide it (as fax or scan), in case noone else has the data sheet?
Thanks,
-- Dipl.-Ing. Tilmann Reh http://www.autometer.de - Elektronik nach Maß.
Email your snailmail address.
I'll just slice the pages out and post them.
-- Tony Williams.
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