"Turbo"

[jebem]

1) Overclocking the 49G+
Some HP models, for instance the 49G+ model, can have the ARM cpu "accelerated" up to 203MHz (in several steps) and back down to 12MHz, just using software tools created by Alistair Borowski (Clockspeed Adjustment Tools - HP-CAT).
I know this is old news, but here it goes the link to the tool:
http://www.hpcalc.org/details.php?id=6081

2) Overclocking the 48GII
Apparently at least one of the 48GII different production batches also works with Alistair Borowski tools, despite not all the cpu speeds will work.
Well, this is a 49 series machine hardware, despite the name, but there are two production batches: the latest production batch uses 4 cell batteries (closer to a 50G?), while the initial batches uses just 3 batteries and a not so good keyboard.

3) Overclocking the 50G
I read some reports claiming the Alistair Borowski tools will not work on the 50G at 203MHz. Well, it should, if we assume that a 49G+ hardware is essentially the same one used in the 50G. Perhaps there are differences in batch productions (for example, if the 50G memory access is running without wait cycles, while the 49G+ can be using wait cycles, who knows!).
HP (or should I say Kinpo?) use to do silent changes, while keeping the same model number.
On top of that, there are different firmware versions for these HP calculators, and it may affect the results as well.
I couldn't find any documented work detailing all the different conditions.

4) Or forget about turbo/overclocking... Try an HP calc emulator/simulator on Windows or Linux or even on your preferred Android/iPad mobiles instead... now that is real "turbo" mode!
Some examples:
http://www.hpmuseum.org/cgi-sys/cgiwrap/...i?read=867
http://www.hpcalc.org/hp48/pc/emulators/
http://sim41.webcindario.com/sim67.htm
http://www.limpidfox.com/hp67.htm
http://www.cneufeld.ca/neufeld/hp67/hp67.html
https://play.google.com/store/apps/detai....limpidfox