That's probably the first time I've seen the word "proprietary" being used by someone when trying to be positive...

Should "proprietary" mean something bad? For me, it is totally okay if a company decides to go the closed source way.
I'm more scared of all this "GPL" code everywhere...

Well, they already have some kind of "app store" here: http://www.casioeducation.com/lesson_library/
And here's something more on the converter: http://www.casioeducation.com/prizm/light_blue

I could, but since the address is known, it's a whole lot easier in many cases just to remember the magic number 0xA8000000.

Could the address possibly change in future OS versions? I hope not....

They did this with OS 2.00 for the fx-9860G/GII back in 2009 and broke several hard-coded add-ins. So, do not rely on 0xA8000000.

Please, use Syscall 0x01E6 to obtain the VRAM address.
Interface: void *GetVRAMAddress(void);

Can someone explain how one who turned their 9750gii into a 9860gii would be able to upgrade to 2.0.1?  I tried sending it using the application available on Casio's website and it said "model not supported."

You need Simon's updater available here: http://www.casiocalc.org/?showtopic=5606

Oh ok. I wonder why they did remove it

As far as I know, there was some trouble with Asian countries, because OS 2.00 has features which are not allowed there and as Asia is the Slim's main market, they had to remove it.

Ah, okay. I thought maybe they were scared and put this into the boot code...

Ah, thanks. I did not know there is such a program!
However, the OS image includes the fx-CG 20 boot code (which is not written) - I would be interested in the fx-CG 10 version.

So if you own an fx-CG 10, please do the following:
- start insight
- start the memory viewer
- go to offset 0x80000000
- press [F3]
- type 0x00020000 as file size
- upload the file memory.bkp somewhere

Interestingly, in the test menu there is a setup entry named "H-Copy".
According to the AFX manual, this allows sending screenshots directly to a PC; because there is no longer an FA-12x software.

With the decision to freely distribute the prizm screen receiver and the ability to store capture files as bitmaps on the calculator, this feature later became redundant.