Well, what you're talking about is a "token" hook.  (There are many different kinds of hooks.)  You would have to pick a token to CHANGE to csc(.  Unfortunately you cannot create your own token.

So I can only give you a semi-detailed explination, since I do not know what token you would want to change to csc(.  You take the value of the token you want to change, multiply it by 2, and put the value in DE.  HL should point to the location in RAM that the zero-terminated (I think)  name of your token is located at.

http://wikiti.brandonw.net/index.php?title=83Plus:Hooks:9BC8

Please refrain from double posting.  I combined your two posts into one.

Here you go. This is a sample implementation of what you want to do.
ld hl, tokenHook
ld de, smallEditRam ;nothing touches this, ever
ld bc, tokenHookEnd-tokenHook
ldir ;copy it to a place where it won't get destroyed

ld a, 1 ;1 means ram
ld hl, smallEditRam
bcall(_enableTokenHook)
ret




tokenHook:
.db $83 ;necessary for hooks, indicates that it hasn't been overwritten
push hl
ld hl, $C8*2
or a
sbc hl, de
add hl, de ;essentially, cp DE
pop hl
ret nz
ld hl, cscText-tokenHook+smallEditRam-1 ;give it a ptr 1 behind where it should be
ret ;I do not know why

cscText:
.db 4, "csc(" ;length, then string

tokenHookEnd:

If you are writing an App, then obviously you do not need to relocate this to smallEditRam. If you get some compiler errors, (you will), check this to get the equates you need. (Ctrl + F to find what you need)

Also, don't forget that just because you changed the words, it doesn't mean that you actually changed the function. For that, you are going to have to go into the scary world of parser hooks.

Lastly, I just remembered that I actually wrote a guide on this.

Ummm... Maybe. I thought I tried that and it didn't work. But if it works for you, then good. There must be a flag or something we don't know about.

Add
_enableTokenHook equ 4F99h
to your ti83plus.inc. And preferably, add it in where it fits alphabetically, just for organizing.

Sometimes brandonW doesn't always name the bcall's what you would expect. So to find that I had to ctrl + F: "tokenHook" to find the address for it in that big .inc file I linked to up top.

Up !

I found this and now I use it, so thank you thepenguin77

TiAddict : to use hooks with Mimas, you must use the length and the hex codes of the ascii catacteres instead of the length and the string.

cscText:
.db 4,$63,$73,$63,$28
; instead of
.db 4,"csc("

And I've a question : with your code thepenguin77, how do you define several hooks in one file ?

Wow, I am glad you posted here because I find this useful, too ! I do have experience with hokks, so what do you mean by several hooks? Do you mean like changing several names and commands or do you mean like a font hook, parser hook, and token hook in one app?