If you ask me what I would recommend to every MSX user, then I immediately would say a Mega Flash ROM cartridge. This cartridge (developped by Manuel Pazos) has flash memory and therefore it is easy to swop MSX .ROM files into this memory, the so called 'flashing'.

When you save a .ROM file into the flash memory the cartridge is simular to an original MSX game cartridge. When you turn off your computer, you can easilly take it out and use it in another MSX. If don't change the flash memory, the game on the cartridge remains the same. The characteristics of the Mega Flash ROM are simular to cartridges used back in the days. In a simple way you can load the game into the Mega Flash ROM with OPF.COM (512 K Mega Flash ROM) or OPFX.COM (1024 K Mega Flash ROM). For some little exceptions you can patchit with this programm to behave/work correctly and exactly like the original game in the cartridge used to do.

The Mega flash ROM I use on my MSX has 1024 K flash memory and a Konami SCC+ soundchip. If there is a Konami game flashed in the cartridge which supports SCC+ sound, then this is recognized and you will hear SCC+ sound. The cartridge is suitable for every MSX model and is user-friendly. A lot of knowledge of MSX isn't necessary to use this cartridge. It works as follow;

- Make sure you got a MSX formatted floppy disk* with: MSX DOS (required to run OPF or OPFX), OPF.COM or OPFX.COM and the .ROM game file (for example GAMENAME.ROM) you want to flash into the Mega flash ROM memeory (see also: MSX .ROM files).
- Put this disk into your MSX.
- Put the Mega Flash ROM in the cartridge slot. When you got a 512 K Mega Flash ROM keep the little button on the right of the cartridge pressed while starting your MSX (keeping it pressed wil make sure the Mega Flash cartridge is interupted while starting up). If you got the 1024 K version keep the ESC-key pressed while starting your MSX!
- When everything went well, MSX DOS has started and you see A:\>
- For the 512 K Mega Flash ROM type OPF GAMENAME.ROM / for the 1024 K version type OPFX GAMENAME.ROM and hit the RETURN key (the game will be loaded into the flash memory of the cartridge).
- RESET the computer. Because the button of the Mega Flash ROM isn't pressed now, the computer will see it as a 'real' cartridge and the game will be executed.

* It's possible and recommended to work from another file storage medium (like Sunrise CF ATA-IDE, Erik van Son's SD interface, Nowind USB interface, DeYoNet network interface or other harddisk system) because it is faster and easier than when using floppy disk.

More info about the Mega Flash ROM cartridge you can find on Viento Sur this is the website of Manuel Pazos.