Hi! So i'm knew to using the TI-84(Plus CE) and building programs for it, but I've been trying to change the Icon of a few programs that shows up in Celsium and CEaShell. I know that they are stored as sprites at the top of the binary, as text but how do you create and insert them? Thanks.

You should be able to find this information that comes with Cesium: https://github.com/mateoconlechuga/cesium/blob/master/icons_descriptions.md#assembly-headers

There are, also several programs for creating your own icons. Here's my favorite. It will store the sprite you create into a string, which you can then paste into a program using the rcl function. https://www.cemetech.net/downloads/files/1889/x1889

wait, how exactly would you do that for a asm program

Did you read the link? I'm not sure what the other person is saying, not sure they understood the question...

lol. You can also create icon headers for BASIC programs.

My situation is that i'm trying to add a icon to a precompiled program. The celsium docs don't really help with that

There is no easy way to add an icon to a program if you don't have the source. If you can rebuild it, you can edit the source to add an icon.

Modifying an existing binary is difficult because it sits at the beginning of the program, so inserting icon data means all internal references using absolute addresses (like jp instructions) become wrong. It's possible to fix that, but basically involves disassembling the program to find everything that refers to program contents and changing the addresses.

I had to learn that the hard way. I have the source but building it is another problem

Yeah whoever the idiot was that decided that icons for assembly programs comes first was rather stupid

If it had been at the end adding icons could have been easy

Presumably somebody could help you figure that out with more information. If you downloaded this from somewhere, presumably sharing where you go it from would be sufficient.

Maybe the only way would be to pack the binary in a 'loader program' with the icon and such that you want which would effectively 'load' the program (perhaps compressed) itself once launched?