Frequently Asked Questions

No. We've tested this mod for many hours and haven't had any problems with units dying or extra heat or anything. The processor used by the DS is actually designed to be run quite a bit faster than the DS runs it at, so there's plenty of room to play. We tested speeds that were quite a bit faster that the GBAccelerator runs things at, and the DS did fine. 1.8x was chosen as the maximum speed because that was the fastest that the wireless would work consistently.

Unfortunately, no. Because of the way the original Game Boy reads buttons, it takes all 3 button wires to read the status of only 2 buttons. Therefore, there aren't enough buttons available for Select, Up, and Down.

You can power Midify with 3.3v or 5v DC. Each output can handle 25ma, up to 200ma total for all outputs combined. You can drive a few LEDs directly if you want, but if you are planning on driving any larger loads you should use transistors.
That's pretty much limited by your imagination and we'll never be able to compile a complete list. As-is it will work with most Nintendo portables and anything that needs a high or low signal. If you use the outputs to drive transistors it opens up more possibilities of devices you can connect Midify to, such as toys and instruments with matrix keypads.

Steady=normal speed, single-blink=fast, double-blink=ultra, and fading in/out=slow-motion. Note: these codes do not apply when using wireless (if equipped) since that also causes the power LED to blink.

In normal control mode, all 3 button inputs on the GBAccelerator are identical. Press and release the three buttons that are connected to the inputs and the GBAccelerator will cycle through speeds.

In up/down control mode, the button inputs on the GBAccelerator have different functions. You'll see that they are labeled S (Select), U (Up), and D (Down). Hold whatever button is connected to the S (Select) input and tap the button connected to U (Up) to increase the clock speed. Hold the button connected to S (Selct) and tap the button hooked to D (Down) to decrease speed. In this mode the speeds do not loop around. Holding all 3 buttons will return the GBAccelerator to normal clock speed.

Up/down control mode is only available with GBAccelerator v2 or above. If you have a lower version number, or there isn't a version number listed on the board, then your GBAccelerator always uses normal control mode.

To toggle back and forth between normal and up/down control mode on a v2 or greater GBAccelerator, hold all 3 buttons for approximately 12 seconds. When the mode has been changed, you will see the LED blink 4 times. Note: you will see a triple-blink at about 6 seconds, but keep holding them. The 6-second triple-blink is for disabling Ultra speed.

It is used to blink an LED indicating that you are in configuration mode, that a command has been received, etc. It can be wired directly to a GBA/DS LED or to a separate LED with a current-limiting resistor. This output is always active-low.
When you first boot your DS, it runs at normal speed (67mhz). Fast speed is 88mhz (~1.3x). Ultra is 116mhz (~1.7x), and slow-motion is 44mhz (~.66x). Note that the actual frequencies produced by the GBAccelerator DS are 1/4 the above listed frequencies.
The GBAccelerator works with the Game Boy Advance, Game Boy Advance SP, and Game Boy Micro.

GBAccelerator GB can be installed in the original Game Boy (DMG) or the Game Boy Pocket.

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