Sega Master System: Bocks SMS Boot Loader BIOS Kit (for 6067)

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Sega Master System: Bocks SMS Boot Loader BIOS Kit (for 6067)

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Bock's SMS Boot Loader 28-pin BIOS and socket for 837-6067 revision SMS

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This kit contains a replacement 28-pin BIOS EPROM and EPROM socket for the original Sega Master System (not the redesigned SMS2), PCB revision 837-6067.

Installation requires a small PCB modification, detailed in the wiki

This BIOS bypasses region checks and allows you to choose which port to boot SMS software from, Cartridge, Card, or Expansion.

Compatibility Notes:

This BIOS is compatible with 837-6067 revision PCBs.  These are SMS units with no built-in game, leaf switches for the Pause & Reset (6067), and a few other hardware differences.  It may work on 837-6629 but it is not guaranteed.  We had to alter Bock's code a bit to get the Boot Loader to work on these earlier PCBs.


From smsboot.txt:

It has the advantage of not checking any country code or header, so basically it is possible to boot up an original Japanese mycard game (for SG-1000 or Mark III) on your US or European Master System 1.

You can also use it to boot Brasilian 8 megabits games which are not supported by all models of Master System 1.

Last but not least, using a homemade pinout converter, it would be possible the same way to boot up any SG-1000/SC-3000 or Mark III/SMS cartridge.

For information about the SMS Boot Loader, see the entry at SMS Power

Additional Information

Compatible Hardware Sega Master System

Unless noted in the description, all Console5 products are fully tested and guaranteed.  Cap kits are made using name brand, high quality, high-temp parts from Nichicon, Panasonic, and other reputable companies.