HP12C: date functions and flashing display ?!

[rprosperi]

I tried this on an early 12C+, (s/n 4CY147099S, w/2xCR2032) and it does NOT flash when activated in a program via SST as Dieter suggested. The s/n confirms this is the initial 12C+ design; the latter 12C+ design (with new CPU) was introduced about April '15, so Carsen's is almost certainly this latter version.

To summarize:

12C+ V1 (2008-2015): No Flash
12C+ V2 (2015+): Flashes

@Dieter - what vintage is the 12C emulator you are using?