π
<-
Chat plein-écran
[^]

BootSwap - CE boot patcher


Hierarchy of files

 Downloads
 Files uploaded(11905)
 TI-83 Premium CE / 84+CE
(1381)

 Utilitaires(294)

DownloadTélécharger


LicenceLicense : Non spécifiée / IncluseUnspecified / Included

 TéléchargerDownload

Actions



Vote :

ScreenshotAperçu


Informations

Auteur Author: commandblockguy
Type : Basic
Taille Size: 7.57 Ko KB
Mis en ligne Uploaded: 10/09/2020 - 00:04:49
Mis à jour Updated: 10/09/2020 - 22:01:17
Uploadeur Uploader: critor (Profil)
Téléchargements Downloads: 17
Visibilité Visibility: Archive publique
Shortlink : http://ti-pla.net/a2642486

Description 

A bootcode installation tool for the TI-84 Plus CE / TI-83 Premium CE
Source: https://github.com/commandblockguy/bootswap/

This program allows you to backup and restore the calculator's bootcode. The bootcode is the first bit of code on the calculator's ROM which is responsible for installing and starting the OS. Being able to change the boot code allows you to install OSes that have been modified, and also allows you to remove the "verifying" screen present on newer calculators.

The bootcode replacement process is somewhat risky - if the bootcode is corrupted, the calculator will not be able to run its operating system or any other code. This program attempts to minimize the risk involved by providing basic error checking features that give a warning when installing a bootcode that does not match a known bootcode. It also includes a few checks that will prevent you from installing something which is obviously not a bootcode. Even if the boot code to be installed is completely valid, there is still some risk involved - installing a new boot code requires the old one to be erased. As a result, there is a short period of time (<2 seconds) where resetting the calculator would cause it to become permanently unusable. Therefore, you should NEVER RESET A CALCULATOR RUNNING BOOTSWAP WHILE IT IS DISPLAYING A "Please Wait" MESSAGE. It will generally exit that screen within 15 seconds.

Normally, the boot code is in a locked sector on the flash chip (a Winbond W29GL032C). However, due to what I assume is an oversight in the bootcode, these sectors can be unlocked with only software.

This program does not work on calculators with a hardware revision of M or higher (this can be seen on the back of the calculator), as they use an entirely different flash chip that does not accept the same commands. As the revision M's bootcode expects the other flash chip, bootcodes taken from revision M calculators will also not work on pre-revision-M calculators.

BootSwap includes an option to disable OS verification. This allows you to install operating systems that have not been signed by TI. It also significantly shortens the amount of time spent on the "Verifying OS" screen after each reset on calculators with boot code 5.3.

Pub / Ads

News articles referring to this archiveNews mentionnant cette archive

-
Search
-
Featured topics
Comparaisons des meilleurs prix pour acheter sa calculatrice !
Découvre les nouvelles fonctionnalités en Python de l'OS 5.2 pour les Nspire CX II
Découvre les nouvelles fonctionnalités en Python de l'OS 5.5 pour la 83PCE/84+C-T Python Edition
Omega, le fork étendant les capacités de ta NumWorks, même en mode examen !
1234
-
Donations / Premium
For more contests, prizes, reviews, helping us pay the server and domains...

Discover the the advantages of a donor account !
JoinRejoignez the donors and/or premium!les donateurs et/ou premium !


Partner and ad
Notre partenaire Jarrety Calculatrices à acheter chez Calcuso
-
Stats.
620 utilisateurs:
>598 invités
>16 membres
>6 robots
Record simultané (sur 6 mois):
6892 utilisateurs (le 07/06/2017)

-
Other interesting websites
Texas Instruments Education
Global | France
 (English / Français)
Banque de programmes TI
ticalc.org
 (English)
La communauté TI-82
tout82.free.fr
 (Français)