Did you know the 2nd bathch of Spice calculators are more accurate?

[brouhaha]

(05-20-2023 09:00 AM)J-F Garnier Wrote:  I probably confused with the 25/25C.
The 25C doesn't have a RAM check or "Pr Error" message and so uses the same ROM as the 25, correct?
In this small booklet , there is a specific procedure for the 25C to initialize the RAM in case of power disruption.

Yes. There are two released versions of the 25 microcode, the later incorporating some bug fixes. The 25C always used the newer 25 microcode, but did not have any specific support for detecting power loss or memory loss. I'm guessing that they didn't want to add a third ROM for that.