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标签:nspire

On the way to overclock the TI nspire CX II calculator

2020 年 10 月 18 日分类:玩机#计算器#nspire

Introduction

In case you don't know, nspire CX II is a calculator made by Texas Instruments released in 2018. It has an ARM926EJ-s processor running at 396MHz, 64MB of LPDDR memory, and 128MB of SPI nand flash. Though this is probably already an overkill for a calculator, but, can we get even faster on this calculator? Of course, it would really mean anything. I don't need that additional performance, overclocking a calculator is just like overclocking anything else, it is just purely for fun. If I do need more performance, I would go and pick up a laptop. Let's get started.

Background

To overclock any modern processor, there are two key parts: clock synthesizer, memory controller. The first one boosts up the clock frequency, and the second controls the memory timing to make sure the memory runs at higher frequency (if you are unable to decouple the memory frequency with core frequency). The TI nspire CX II uses a custom SoC which I don't have any documents. The operating system on the nspire CX II is also locked down to disallow any unsigned binary code execution. So to overclock it, there are three steps, 1. Get the "root priviledge" on the nspire OS, 2. Understand how clock generation works on nspire, 3. Write a program to overclock it.

MORE

nPAL – The Legend of Sword and Fairy for Nspire ver. 1.1

2015 年 6 月 20 日分类:软件坑#nspire#计算器#移植#SDL#仙剑奇侠传
Hint: this post is also available in Chinese.

nPAL

About the game

XianJian QiXia Zhuan 仙劍奇俠傳 (also known as The Legend of Sword and Fairy and “PAL”) is an action RPG created by Taiwan’s Softstar Entertainment Inc. The game is considered by many as simply one of the best Chinese RPG ever created. Since its first release in 1995 (DOS Version), many new versions and sequels (including a prequel) were created. However, none could replace the breath-taking and tragic tale it was born from. Here, we meet our protagonist Li Xiaoyao; an aspiring martial artist and the lovely Zhao Ling’er, a charismatic Nuwa descendant.​

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WP 34s for Nspire

2014 年 8 月 25 日分类:软件坑#计算器#移植#nspire
Hint: this post is also available in Chinese.

wp34s_4ns

This is an nspire port of WP-34s calculator software.

Usage

Var for keymap.

To learn to use WP-34s, read its official manual: http://sourceforge.net/projects/wp34s/files/doc/

Screenshot

ss1 ss2

Download

GitHub Repo

TI-nspire boot splash customization

2014 年 2 月 3 日分类:软件坑#计算器#nspire
Hint: this post is also available in Chinese.

image

4 months ago, critor released mySpire(http://www.cncalc.org/forum.php?mod=viewthread&tid=9441) which allowed modification of nspire CX/CM’s boot splash screen. Since the image itself is signed, there is no way to change the image except modify its position, size, etc.

However there is still a workaround. It’s possible to use third-party payload to display extra things on the screen. So here it is.

MORE

#JunkCollection ’14

2014 年 1 月 1 日分类:玩机#晒机#计算器#nspire#树莓派#82ES
Hint: this post is also available in Chinese.

showcase14

Greeting from the first day of 2014!

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