---
layout: devinfo
app: TWL_EVA
redirect_from: /dsidev/twleva.html
---
TWL EVA is a program used for quality control on DSi consoles right off the assembly line, and possibly to test them for repairing as well (thought because TWL EVA makes references to a "repair" mode).
        <h2>Test list</h2>
        This is a list of the tests that can be accessed from TWL EVA's menu by holding the <code>start</code> button on boot, or by cancelling the aging test if it autoboots that. The tests are categorized by which menu they are available in.<br><br>
	<b><code>EVALUATION MENU:</code></b><br>
	<code> - CPU</code>, Various CPU tests (more info needed)<br>
	<code> - MIC</code>,Microphone tests and sampler<br>
	<code> - LCD</code>, Displays colored bars to test top screen<br>
	<code> - LCD-RED</code>, Displays lines and colors to test screens<br>
	<code> - EMI DEMO</code>, Model and rendering tests (need to confirm) with Super Smash Bros. screenshots on the bottom screen<br>
	<code> - KEY</code>, Displays button input values both graphically and by showing the registers<br>
	<code> - NVRAM </code>, Reads and writes old DS config in NVRAM, and displays version info<br>
	<code> - PMIC</code>,Tests power management chip (controls power and backlight)<br>
	<code> - CAMERA</code>, Configures camera settings like exposure, sharpness, white balance, etc. Also allows for saving photos, basic camera tests, and viewing photos from those tests<br>
	<code> - RTC</code>, Sets the RTC to the selected time<br>
	<code> - PSRAM</code><br>
	<code> - NAND</code>, Writes dummy files to NAND for testing, displays NAND chip info, and has the ability to read/write to NAND in hex<br>
	<code> - SNDEX</code>, Sound tests<br>
	<code> - TWL INFO</code>, Displays system info like configuration and manufacturer details for NAND, battery, PMIC, and camera<br>
	<code> - SD</code>, SD read/write tests and displays SD card info<br>
	<code> - MCU</code>, Manages LED  for WiFi, power, camera. Also controls brightness, volume, mic gain, and the resisters for all<br>
	<code> - WRFU</code>, Check current and old mac addresses<br>
	<code> - TP</code>, Touch sceen calibration<br>
	<code> - INITIALIZER</code>, Formats  NAND, installs <code>.nand</code> and <code>.tad</code> files (will not work on retail, untested on dev. Installing with the <code>.nand</code> option will <u><b>result in a brick</b></u> that unlaunch can't protect against), writes HWInfo and MCU firmware<br><br>

	<b><code> TEST PROGRAM:</code></b><br>
	<code> - SELF CHECKER</code>, Run full test on system<br>
	<code> - AGING</code>, Run full test on system<br>
	<code> - FLICKER ADJUSTER</code>, Displays thin bars, which cause flickering, to see if screens need to be adjusted<br>
	<code> - LCD UNIT CHECKER</code>, Displays thin bars, which cause flickering, to see if screens need to be adjusted<br>
	<code> - TP CALIBRATION</code>, Calibrates touch screen<br>
	<code> - TP ACCURACY</code>, Tests touch screen calibration<br>
	<code> - CAMERA TEST</code>, Tests cameras and saves photos from the test to the SD card<br>
	<code> - CAMERA ASSY</code>, Tests cameras and saves photos from the test to the SD card<br><br>

	<b><code>MISC MENU:</code></b><br>
	<code> - Test Sound</code>, Plays music and sound effects<br>
	<code> - Sound Output</code>, Plays a tone in the left, right, or both speakers.<br>
	<code> - Swap Display</code>, Swap bottom and top screens<br>
	<code> - Dump Eeprom</code>, Displays button input values<br>
	<code> - FS Viewer</code>, Browse and display file content in ROM, NAND, or the SD card in hexadecimal or plaintext<br>
	<code> - RTC Set</code>, Sets the RTC to the selected time<br>
	<code> - BarCode Menu</code>, Creates barcodes and and QR codes with the serial number and other console info<br>
	<code> - Clear User Data</code>, Presumably clears user settings/photos/saves<br>
	<code> - Boright Spot</code>, Unknown, this is greyed out and so we're unable to access it<br>

	<h2>Additional info</h2>
         - The <code>.tad</code> installer follows the same rules as <a href="/dsidev/twlnmenu.html">TwlNmenu</a>, needing programs to be signed for the target console.<br>
         - Different versions of TWL EVA may exclude certain functions. The above list is for all functions across each version of the program.