AKA: 3-in-1, 3 in 1, EZ Expansion Pack, EZ-Flash 3-in-1, EZ-Flash 3 in 1, Expansion Pack
Manufactured by: EZ-Flash
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1st board version ended due to chip supply issues.
2nd board version ended due to planned upgrade of NOR capacity.
3rd board version of the 3in1 has 512Mbit (64MB capacity) NOR and 128Mbit (16MB) PSRAM.
The EZ-Team do not use spaces in the name 3in1 and is shown as one word. Other reseller sites used a typo spelling where spaces or dashes where introduced in the name and has come out as 3 in 1 or 3-in-1 due to the text printed on the box to be formated justified, causing spaces. Referenced to the correct spelling can be seen on the EZ-Flash product page here.
The 3 in 1 Expansion Pack is a NDS Slot-2 Cart that works in conjunction with NDS Slot-1 Carts. The device officially attempts to integrate three distinct solutions. First, the device is capable of loading GBA games stored in slot-1 devices in a manner similar to previous slot-2 solutions created by the EZ-flash team. Secondly, the 3 in 1 is a memory expansion pack. Finally, the device is a competing rumble pak expansion for games that support official DS rumble pack. Furthermore, open third-party access to the hardware features have expanded the capability of the Expansion Pack.
The 3 in 1 Expansion Pack for EZ-Flash V can be officially purchased as a bundle with the EZ-Flash V or separately. The product was specifically designed for EZ-Flash V, but users of other slot-1 cards are able to utilize the Expansion Pack.
The source code necessary to utilize the key hardware features of the expansion pack is readily available to developers. There have already been many successful solutions for third-party slot-1 carts. There are many practical and creative projects openly available in the homebrew scene.
Name & Link | Author | Program Type | Brief Summary |
---|---|---|---|
Standalone Browser Patch | Triforce, Cory1492 | Patcher | Patches the DS Browser allowing automatic detection of the 3 in 1 PSRAM |
Standalone Rumble Patch | anonYmous | Patcher | Patching tool for DS ROMS that support rumble. This allows automatic detection of the rumble hardware, therefore not requiring any tool to turn on the rumble feature. This is a manual version of the automated patching done by the EZ-Flash V. |
GBALdr | Cory1492 | GBA ROM Loader | A homebrew application run from the DS that will load games directly to NOR memory, load/save .sav files, and can auto-backup the save data currently on the cart when loading a new game. Due to the fact that it only loads games into NOR memory, it can be painfully slow, taking up to 5 minutes in some cases. Cory1492 has recently updated the GBALdr program to fix the problems detecting and running GBA games with newer 3in1 cards which have different hardware components to earlier versions. Full details of the updated GBALdr can be found here. |
3in1 ExpPack Tool (Succeeded by GBA ExpLoader) | Rudolph | GBA ROM Loader / Hardware Enabling | Another homebrew application that runs from the DS. This is by far one of the best loaders available. Just as with GBALdr, it can load games to the 3 in 1. What makes it different than GBALdr is the fact that it can load all ROMS under 16MB directly to the PSRAM on the 3 in 1, making copy time less than a minute in nearly all cases. Additionally, it can load games to NOR memory if they exceed 16MB. Two other features that I find to be unique to this tool is the ability to turn the Rumble Pack on and off (for supported DS games) and the ability to switch the cart over to an Expansion Pack for use with the Opera Browser. Rudolph recently updated the 3in1 ExpPack software and renamed it to GBA ExpLoader. Compatible with the first chip set. The latest version can be downloaded from here |
GBA ExpLoader (Successor to 3in1 ExpPack Tool by Rudolph) | Rudolph | GBA ROM Loader and Patcher / Hardware Enabling | Rewrite of the 3in1 ExpPack Tool allowing expanded compatibility with not only the succeeding 3in1 chip set, but also other slot-2 carts. Differences from 3in1 ExpPack Tool: automatic GBA ROM file patching, multiple save mechanism, and extended compatibility with specific save types (for example, ROM 1386 - Famicom Mini Vol 5 Zelda no Densetsu, save type EEPROM_124). |
NDS Backup Tool 3in1 | Rudolph | Backup Tool | Utilizes the NOR Flash Memory and SRAM. This homebrew application can send or backup save information stored an original DS game cartridge. Furthermore, NDS Backup Tool 3in1 can backup original carts as ROMs. DS cartridges that contain more than 256 Mb (32MB) of data are compatible with this tool. The software is sophisticated enough to copy data in 256 Mb chunks and then rejoin them later in the slot-1 cartridge memory. Compatible with both chip sets. |
NDStation | Chuckstudios | Patcher | A very interesting approach to loading ROMs on the 3 in 1. Rather than having a homebrew running on the DS transfer the ROM to the 3 in 1, chuckstudios developed a Windows program (later ported to Linux by dg10050) that packaged the GBA ROM in an .NDS file. This packaged file, when launched from a Slot 1 card, would backup any existing save on the 3 in 1 and load the ROM onto it. The aim of the project is to give things a more integrated and unified feel with your Slot 1 cart. Additionally, one can customize the icon of the .nds file, alternatively load the game into the PSRAM, compress the ROM, and include a custom GBA border. |
CycloDS Evolution Firmware v1.2 and up | Team Cyclops | Firmware | The CycloDS Evolution officially integrates rumble for Nintendo DS games, memory expansion for Opera Browser without any additional ROM patching, and GBA-NDS linking. |
Pokepatch for EZ3in1 | Cory1492 | Patcher | Patches Pokémon DS versions Diamond and Pearl allowing DS-GBA linkage. The GBA game must be loaded into the NOR. Please read the linked discussion thoroughly. |
DSLinux | DSLinux Dev Team | Operating System | Provides the Linux operating system more available RAM |
SNEmulDS | Archeide | SNES Emulator | Provides additional RAM to emulator in order to improve large SNES ROM emulation |
Mini vMac Port | Lazyone | Legacy Mac OS Emulator | Provides additional RAM |
Lameboy | Nutki | Game Boy / Game Boy Color Emulator | Rumble is supported GB/GBC games |
Quake 1 and Quake 2 for Nintendo DS | Simon Hall | Quake 1 and Quake 2 Ports for the DS | Quake 1 uses the additional RAM as an optional enhancement. Quake 2 requires additional RAM from slot-2. |
The current compatibility of the 3 in 1 with official games is practically complete. The official EZ-Flash V kernel software is capable of integrating all hardware featured in the 3 in 1 Expansion Pack. The EZ-Flash team does not ensure hardware compatibility with other slot-1 devices. Compatibility with third-party slot-1 carts appear to be just as good.
The 3 in 1 is compatible with GBA ROMs properly patched. Optional ROM trimming is also available. GBA ROMs can be written to the PSRAM unless the ROM is larger than the 128 Mbit capacity and/or has a save type of 1 Mbit or larger. All GBA ROMs can be written into the 256 Mbit NOR flash memory. The NDS Browser requires additional patching and/or tools for unofficial slot-1 carts in order to recognize the PSRAM. The rumble feature is for NDS games and can be easily coded into homebrew. Lameboy, a slot-1 Game Boy / Game Boy Color emulator, is an example of homebrew that is compatible with 3 in 1 rumble when properly enabled by either official or third-party software.
Homebrew applications can use the Expansion Pack as a memory expansion. For example, DSLinux-DLDI uses it to provide extra RAM for their linux port. SNEmulDS utilizes the extra RAM to improve large Nintendo SNES ROM emulation.
Standalone Packaging
Contents
Comparison to Original
Simply put, the most popular unified third-party program for GBA ROM Loading, RAM Expansion, and Rumble at this time is GBA ExpLoader. GBA ExpLoader automatically patches GBA ROMs during the ROM loading process. The following are fairly generalized instructions.
EZ-Flash V owners may follow the Official EZ-Flash V Quickstart Guide. Other Slot-1 Carts will require a third-party solution.
Third-party applications have become more sophisticated allowing a more streamlined process of initial setup. This method of initial setup does not require manual patching of GBA ROMs.
The original method requires manual ROM patching. This can be used as a historical reference as third-party applications with automatic ROM patching become more mature.
The EZ-Flash V can open a clean Nintendo DS Browser ROM without any additional setup. Other Slot-1 Carts will require a third-party solution in order for the ROM to recognize the 3 in 1 PSRAM.
According to the Quickstart Guide and Official GBAtemp review, an updated save list is necessary in order to identify NDS ROMs that support rumble when used in conjunction with the EZ-Flash V. Other Slot-1 Carts will require a third-party solution. Rumble is compatible with any NDS game or homebrew program that supports it.
Unlike a lot of Slot 2 solutions out there, the 3 in 1 does not have its own removable storage. This is due to the fact that it was initially designed for use with the EZ-Flash V. ROMs are stored in a permanent fashion on the removable media or internal storage of your Slot 1 device. Where they are put is determined by which solution you choose from the third-party solutions list. A cool feature of the 3 in 1 is treating a GBA ROM loaded in the NOR like a GBA cartridge.
The 3 in 1 can only hold one ROM in its NOR, unless you are running an EZFlash V or V Plus with the 1.8x b2 loader. Any time you want to play a game 16MB or less, you copy it over to the PSRAM on the cartridge using your loader of choice. This is standard with all slot 2 cartridges. Most slot 2s that have firmware (the ones with removable or internal storage have the loader built-in). The only reason people think otherwise is because most Slot 2s have either removable or internal storage for ROMs, homebrew, etc, which the 3 in 1 does not. Please read the initial setup section, it will give a more in-depth explanation.
This kind of issue can only be resolved through troubleshooting. Does the GBA ROM require SRAM patching beforehand? If so, make sure you are SRAM patching your games using one of the two tools listed in the initial setup section. If you are already doing this, make sure you are loading games in either PSRAM or NOR, not both. From what I have seen, most loaders want you to use one or the other for it to work correctly. If you’ve tried everything else and your GBA roms still aren’t saving/loading properly then the problem may be that the battery (the thing inside the cartridge with yellow rubber coating) isn’t working. The save feature will not work without the battery. Try using GBAExploader, if it asks ”may I set this slot2 expansion pack for GBAExploader” every time you load it up then the battery is definitely broken. You now have 2 options:
1) Get a new ezflash 3-in-1 and hope the battery in that one isn’t stuffed as well
2) Replace the battery yourself. Here’s a good tutorial I’ve found http://gbatemp.net/index.php?showtopic=132872
Check the help files of your loader for more information (such as known bugs, proper ROM loading procedure, etc.).
You will need to patch the ROM if your loader does not feature automatic patching. Furthermore, patching is only necessary if the ROM does not use SRAM for saving. Anything already using up to 512kbit (64KiB) SRAM to begin with shouldn't need to be patched at all. GBA games that originally used EEPROM or FLASH, and/or has over 512Kbit, will need to be patched. 1024Kbit save types have to be patched with EZ4 client since GBATA has not implemented the concept of SRAM bankswitching. GBATA, for example, will not allow the file to be patched if unnecessary.
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