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Hello

Anyone know how to enable the lowercase function on the TI 84 Plus CE? I need to b able to enter chemical equations and entering everything in uppercase can cause the wrong element to come up/wrong answer.

I am attempting to enter equations that will let me know if a chemical is balanced or unbalanced.
Are you on 5.3.1? 5.3.1 doesn't have the Asm84CEPrgm token that allows you to use hexcodes which allow you to enter lowercase letters.
Write the following program:

Code:
PRGM:NAMEHERE
:Asm84CEPrgmFDCB24DEC9

That first token, Asm84CEPrgm, can be found near the top of the catalog ([2ND][0]). Type the remaining characters exactly as written, or you're gonna have a bad time. If you think you messed up, check to see that you have an even number of characters after Asm84CEPrgm.

Run the program by running

Code:
Asm(prgmNAMEHERE

in the main screen, where Asm( can also be found near the top of the catalog. Lowercase letters will now be enabled by pressing [ALPHA] twice.
I could actually use this too. Do you write it a line below Asm84CEPrgm?
De2290 wrote:
I could actually use this too. Do you write it a line below Asm84CEPrgm?


Don't need to. Same line works fine.
If you can't run that code because of OS 5.3.1, use this program instead.
or you could follow TheLastMillenial's guide to downgrade to 5.3.0
https://www.youtube.com/watch?v=dGq-nsNOhuc
This is slightly less efficient, but ICE (programming language) enables lowercase. Unless you're programming, it'll be totally useless (except for lowercase).

You can download ICE here and some required programs to run it here. Run ICE at least once, and lowercase is enabled.
De2290 wrote:
I could actually use this too. Do you write it a line below Asm84CEPrgm?

Newlines just get ignored when using hex opcodes, as long as you put an even number of characters per line (Because a nibble only represents half an instruction, so it doesn't make sense without its other half)
You might see some people using new lines for readability purposes like this from tibasicdev:

Code:
AsmPrgm
EFD74AD604C0
676FEB
4E234623EB
C5D5E51A
EFA342F5
EBEF9445
218D8477EFB44C06004F
F1E1D109C1
20020B13
0B1378B1
20DB
EF9247
EF5641
EFBF4A
C9

but something like this is equally valid:

Code:
AsmPrgm
EF
D7
4A
D6
04
C0
67
6F
EB
4E
23
46
23
EB
C5
D5
E5
1A
EF
A3
42
F5
EB
EF
94
45
21
8D
84
77
EF
B4
4C
06
00
4F
F1
E1
D1
09
C1
20
02
0B
13
0B
13
78
B1
20
DB
EF
92
47
EF
56
41
EF
BF
4A
C9

and this would also be valid:

Code:
AsmPrgmEFD74AD604C0676FEB4E234623EBC5D5E51AEFA342F5EBEF9445218D8477EFB44C06004FF1E1D109C120020B130B1378B120DBEF9247EF5641EFBF4AC9


De2290 wrote:
or you could follow TheLastMillenial's guide to downgrade to 5.3.0
https://www.youtube.com/watch?v=dGq-nsNOhuc

  1. That's not a tutorial on how to downgrade to 5.3.0
  2. You generally can't downgrade from 5.3.1 to 5.3.0

Since 5.1.5, TI added downgrade protection, which will prevent you from downgrading. The downgrade protection will allow you to downgrade your calc down to a minimal allowed version, but in the case of OS 5.3.1, they increased the minimal allowed version to 5.3.1, so any new calculator won't be able to downgrade, it depends on your boot code.
kg583 wrote:
Type the remaining characters exactly as written, or you're gonna have a bad time.

Actually, depending on where you mess up, you could end up with some funky results Evil or Very Mad
    Change the 24 to 12 and you just pressed 2nd.
    Change the 24 to 08 and you just essentially turned off Automatic power-down.
    Change the 2nd D to a 9 and you just turned off the low battery checking before archiving/unarchiving a variable Laughing
mr womp womp wrote:

De2290 wrote:
or you could follow TheLastMillenial's guide to downgrade to 5.3.0
https://www.youtube.com/watch?v=dGq-nsNOhuc

  1. That's not a tutorial on how to downgrade to 5.3.0
  2. You generally can't downgrade from 5.3.1 to 5.3.0

Since 5.1.5, TI added downgrade protection, which will prevent you from downgrading. The downgrade protection will allow you to downgrade your calc down to a minimal allowed version, but in the case of OS 5.3.1, they increased the minimal allowed version to 5.3.1, so any new calculator won't be able to downgrade, it depends on your boot code.

Ehh, you're kinda incorrect there. The video isn't strictly a tutorial on how to downgrade, but it does provide the tools to downgrade even if you have boot code 5.3.1. Please correct me if the tools no longer work for the new boot codes. Smile
TheLastMillennial wrote:
mr womp womp wrote:

De2290 wrote:
or you could follow TheLastMillenial's guide to downgrade to 5.3.0
https://www.youtube.com/watch?v=dGq-nsNOhuc

  1. That's not a tutorial on how to downgrade to 5.3.0
  2. You generally can't downgrade from 5.3.1 to 5.3.0

Since 5.1.5, TI added downgrade protection, which will prevent you from downgrading. The downgrade protection will allow you to downgrade your calc down to a minimal allowed version, but in the case of OS 5.3.1, they increased the minimal allowed version to 5.3.1, so any new calculator won't be able to downgrade, it depends on your boot code.

Ehh, you're kinda incorrect there. The video isn't strictly a tutorial on how to downgrade, but it does provide the tools to downgrade even if you have boot code 5.3.1. Please correct me if the tools no longer work for the new boot codes. Smile

I've never tried it for obvious reasons, but I was under the impression that you couldn't downgrade from boot code 5.3.1, I may be mistaken.
Oh, I think I see the misunderstanding. The tutorial isn't how to downgrade your boot code (like you said, you can't) it's how to downgrade your OS. As far as I know, boot code 5.3.1 seems to look at a specific part of the certificate to see the minimum OS it can downgrade to, the tool in the video makes it so the certificate says the calculator can be downgraded to any OS.
  
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