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HP-41 modification: what is this (see photos)?
06-11-2022, 06:02 PM
Post: #8
Cococollector Offline
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SOLVED: HP-41 modification: what is this (see photos)?
Thomas in his wisdom gave the right clue: it‘s the ETS turbo board made by PETSS in Belgium according to the aforementioned CURSOR article.
BEEP sounded in normal speed after pressing - (minus) and * simultaneously.
And yes: - and * set speed to normal, double speed after switching off and on again.

If it‘s an early version: is there a need for the capacitor maybe some variant?

Thanks a lot.

Klaus
11C|41CX (half)|41CX (full),ETS turbo|48G, Lorenz Comp 256k|34C| 41CV (full), misc. ROMs, periph.s, IL (in order of appearance)|15C CE
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SOLVED: HP-41 modification: what is this (see photos)? - Cococollector - 06-11-2022 06:02 PM



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