I will be gone for most of today, but what I need now is a PHP function to convert 24-bit RGB (as inputs $r, $g, $b) to grayscale. If someone could write one for me (or google it for me) I'd appreciate it. See ya all either later today or tomorrow.

isn't converting to greyscale as simple as just calculating the average of the r, g and b values?

nesting stores does work in axe, but I don't think the randint does. Instaed of doing randInt(1,8)+2, you can do rand^8+3. rand in axe generates a random 16-bit number, ^ calculates the remainder of a division by 8 which makes in the range of 0-7 (it doesn't mean power in axe!), and the +3 adds 3 to it to give you the correct range.

I meant 80% of the TI Nspire price is/was for software engineering.

How much would you pay for a TI Nspire CAS with Touchpad?

It would largely depend on how new it still looks, what accesories you include, and the serial, OS and boot code version numbers (since only a few versions can be hacked)

I've had this problem with my 84+ too once. And like a few people already said here, it could be fixed by writing a value to the LCD, iirc it was $0C to port $01. You can try to use an asm program to do the same, and if the display driver is similar, it just might work.

Otherwise, I think you should make a program to write lots of different values to the LCD's port, and check if you can see any change (if you end up vertically mirroring it as well, you're close).

hehe, let's draw some USB-sticks if you happen to need more flash memory

It's a bit impractical though, you'll have to draw billions of transistors to get a decent size of memory, and the ink you'll use in the process will probably cost more than a normal flash drive or SD card.

I haven't been able to work on this for a while because of some windows-related problems, but they are partially fixed now (windows still often crashes, causes random and quite heavy slowdowns, and there are still a few more problems) but at least wabbitemu works again, which means that I can work on this again.

There aren't really any new features yet, but I slightely changed the graphics of the vertex move mode. Now it greys out the unselected vertices and the cursor which makes the selected vertex more visible. However, it does slightely slow down the program.

Lines will be added soon, but I first want to know what would be the graphics: The current ones of the 'old' ones. I'll add a poll for that.
Here's a screenshot of the new graphics:

Two characters within square brackets are compiled to 1 byte (each hexadecimal character represents 4 bits), but in the source code, they are 2 bytes.