Yup. Now I guess the hardest part will most likely to find the appropriate OS ourselves. I wouldn't be surprised if it ended up on warez sites pretty soon, though.

Guess we'll get to see what actual speed is like fairly soon on both this and the TI-89 emulator!

I took a look at ARM assembly and noticed it can do some things that Z80 assembly can't do.  Does this make your work on the Nspire easier?

Definitely.

Yup. Now I guess the hardest part will most likely to find the appropriate OS ourselves. I wouldn't be surprised if it ended up on warez sites pretty soon, though.

Near the bottom of page 17 of the "Mission: Hack the TI Nspire" thread at UTI has some links to a site that links to them (I hope this is indirect enough to not count as distributing them...)

I took a look at ARM assembly and noticed it can do some things that Z80 assembly can't do.  Does this make your work on the Nspire easier?

One other thing is that ARM processor is like 32 bits while z80 is only 8 or 16 bits. On z80 you need to perform some stuff in quite hackish ways and on the 82-84 series dealing with grayscale is even harder because they don't have a memory-mapped LCD.

How does the memory mapped display make it easier?

Because you only have to write to memory to update the LCD contents. On the older z80 calculators, you had to interface with the LCD driver manually.

Grayscale also looks better on memory mapped calcs

Malloc?

nice to see some progress tho ^^