HP-50gII Discussion (split from 15c CE thread)

[Gilles]

(08-31-2023 12:53 PM)Thomas Radtke Wrote:  Ok, don't know NewRPL. Just thought the firmware is the major obstacle.

If it's not ready today, how would Moravia rewrite it from scratch?

Here I reach my threshold of incompetence but: if I'm not mistaken the ROM of the HP50 and 49g+ (75 MHz Samsung S3C2410A processor) is the same as the HP49g ROM (4 MHz Yorke-saturn processor). The HP50G already uses an emulation layer (the Samsung emulates the Yorke). I imagine that an HP50gII with other hardware could work by changing the emulation layer of the 50g with a new processor/hardware using most part of the 50G "rom". The newRPL approach is very different since everything is rewritten from scratch and it's a huge job.