Suggestions on HP21 restoration

[Marcovecchio]

Oh my, Ren, I didn't mean to offend anyone!

In fact, I'll need to take baby steps here, one feature at a time, probably implementing the standard features, or even less than the standard, and improve from there.

About power consumption: is an 8 bit AVR really not enough to replicate the Woodstock number precision? Perhaps not using the standard float types, doing things by hand, or something similar. The reason for this is the ridiculous power consumption of AVRs, specially when run at very low clock speeds: it's in the order of uA. I don't feel very comfortable to use an ARM to emulate a 70's ACT.