0 Members and 8 Guests are viewing this topic.
Woah I was so convinced the Nspire could not go above 150 MHz. Awesome critor! This kinda reminds me that Casio FX-9860G program that let you speed up the calc processor, except that on the 9860G, it did not overclock it, it just allowed you to setup the CPU at its max speed instead of the downclocked 29 MHz.It would be cool if it works in 84 mode too.
+-----------+| Nover 1.0 |+-----------+by X. Andréanihttp://www.ti-bank.fr/9121) Introduction: ------------Nover is a program to downclock / overclock your TI-Nspire.In theory, it can make it 4 times faster.But you'll only be able to make it 2 times faster without any problems.TI has overclocked the Nspire and made it 2 times faster with the 2.1 OS.But unlike OS 2.1:* Nover doesn't reduce dramatically your available free space (only 10Kb for Nover,13-15Mb for the 2.1 OS -> free space is decreased by 1.5Mb when upgrading 2.0 -> 2.1).* Nover doesn't install a downgrade protection* Nover lets you use the overclock from OS 2.1 on previous OSes.If you allready have OS 2.1, you can try to overclock more,but you should only try if you are familiar with ocerclocking.2) Hardware required: -----------------Any TI-Nspire calculator.3) OS required: -----------Any OS supported by a Ndless 1.7 compatible kernel.As of this date:- 1.3.2438 (non-CAS) [Ndless 1.3]- 1.3.2437 (CAS) [Ndless 1.3]- 1.4.11653 (non-CAS) [Ndless 1.4]- 1.4.11643 (CAS) [Ndless 1.4]- 1.7.2741 (CAS & non-CAS) [Ndless 1.7 & Ndless 2.0]- 2.0.1.60 (CAS & non-CAS) [Ndless 2.0]4) Software required: -----------------Nover has been built for the Ndless 1.7 kernel.You need Ndless 1.7, or a Ndless 1.7 compatible kernel.As of this date, you'll need:- Ndless 1.3 for OSes 1.3.2438 & 1.3.2437- Ndless 1.4 for OSes 1.4.11653 & 1.4.11643- Ndless 1.7 for OS 1.7.2741- Ndless 2.0 for OSes 1.7.2741 & 2.0.1.60 (still in development)5) Usage & keys: ------------ a) If you're not familiar with overclocking: ----------------------------------------Press the [*] [Enter] to set the config from OS 2.1 (2 times faster).Press the [/] [Enter] to go back to the original config from OSes 1.1-2.0. b) If you are familiar with overclocking: -------------------------------------Nover lets you play with 3 parameters:* Base frequency: 27MHz or 114MHz-300MHz (by steps of 6) default is 180MHz in all OSes* Base/CPU ratio: x2-x254 (by steps of 2) default is x2 in all OSes (x0 can be set but seems to be the ame as x2)* CPU/AHB ratio: x1-x8 default was x6 in OSes 1.x & 2.0, and is now x1 in OS 2.1 Press [1], [2] or [3] to choose the parameter to modify.Press [+] or [-] to increase or decrease it.Press [Enter] to set your changes.Base/CPU ratio can be set to x0, but it seems to be exactly the same as x2.So this parameter cannot be improved.Base frequency seems to be causing problems with the LCD refreshing,when set to any value different than 180MHz.The screen is quickly oscillating horizontally, and less often vertically.It only happens after exiting Nover.Running any "long" calculation or any Ndless program is temporarillystopping the oscillations.So the problem seems to come from the OS idle loop, and might be hard to fix...What a pity! 300MHz makes your calculator 4 times faster... :(6) In case of difficulty: ---------------------Your screen is oscillating or filled with garbage?Restart Nover (if possible & necessary).Then set one of the 2 official configurations:- Press [*] [Enter] (x2 config used in OS 2.1)- Press[/] [Enter] (x1 original config used in OSes 1.1-2.0)If you cannot make this work, remove a battery for some seconds.The Nspire should restart normally.7) Problems/bugs: -------------* Screen oscillations when base frequency is different than 180MHz (see 5.b)Problem seems to be related to the OS.8) Overclocking or not overclocking: --------------------------------Although I've made by best, overclocking can be a dangerous thing as it makesthe hardware work in a non official way.There is a possibility than some parameters values (or repetitive uses of those):* do erase some of your data permanently* do make your calculator unstable permanently* do shorten your calculator life* do damage the screen permanently* do damage your calculator permanently* and many other frightening permanent thingsThe fact that TI is using overclocking in the 2.1 OS should prove the (2x)overclocking option is safe, but we can never be sure.Overclocking your calculator with other parameters values than the one of the 2.1 OSmay cancel your warranty (if TI has a way to check this).I am not responsible for what you are doing and if your calculator is damaged permanently.Be sure to know what you are doing, or to ask for help/advices on TI calculator forums.9) Licence: -------GPLv2. Source code is included.You may modify the source code according to the included licence.10) Release history: ---------------28.12.2010: 1.0 - initial public release11) Thanks to: ---------The TI-Bank community for their encouragements. ( http://www.ti-bank.fr )The Omnimaga community for their encouragements. ( http://www.omnimaga.org )ExtendeD for Ndless 1.7/2.0.Bsl for Ndless 1.3/1.4.Calc84maniac for his analysis of the oscillating screen problem.12) Contact: -------Xavier Andréani[email protected]
Author
Topic: Let's overclock Nspire to x2 or x4 (Read 19257 times)
