Forums

Hello!
How's summer? Sweating pixels? Having a swim in Lake Fathom, or trying to obtain the last heart in eagle form?

Save the world from an evil attack of missiles trying to escape from your screen, we finally gets to you the long time missing Missile Defense 3-D BIOS for the Master System. This is the last version (4.4) of the SMS boot ROM released in USA, and contains (guess..) Missile Defense 3-D as an embedded game. It is fairly rare, as not all SegaScope / 3-D glasses packages had Missile Defense 3-D in the BIOS ROM: it often was provided on a separate, pack-in cartridge.

Lastly, from our fellow Japanese friends, we have Hyper Chou Pro Yakyuu '92 for the Game Gear. This is an early variant on the common serie of baseball games for the Game Gear (World Series Baseball '95, Nomo's World Series Baseball, etc.), maybe the first, being released in 1992.

As far as I can tell, the *.4 BIOSes (2.4, 3.4, 4.4) are all pretty much the same, same year, same functionality, same ROM checking code, so their versioning is fairly meaningless.

Wasn't the Alex Kidd BIOS released in the USA?

Would it be possible to socket or piggy back bios chips onto standard SMS'? I'd love to play a handful of games with a mere switch.

You could certainly piggyback original BIOS chips, and use a switch to select between them, because as far as I know they're interchangeable. However, you can't achieve the same using an EPROM because all but the most basic BIOSes require bankswitching hardware to be integrated into the ROM (it's not something you can program into an EPROM).

Maxim wrote

Wasn't the Alex Kidd BIOS released in the USA?

Right; it was in the Sega Master System II.

Author	Message
Bock Site Admin Joined: 08 Jul 2001 Posts: 8652 Location: Paris, France	Missile Defense 3-D [BIOS] (SMS), Hyper Chou Pro Yakyuu '92 (GG) Posted: Sun Aug 27, 2006 1:20 pm
	Hello! How's summer? Sweating pixels? Having a swim in Lake Fathom, or trying to obtain the last heart in eagle form? Save the world from an evil attack of missiles trying to escape from your screen, we finally gets to you the long time missing Missile Defense 3-D BIOS for the Master System. This is the last version (4.4) of the SMS boot ROM released in USA, and contains (guess..) Missile Defense 3-D as an embedded game. It is fairly rare, as not all SegaScope / 3-D glasses packages had Missile Defense 3-D in the BIOS ROM: it often was provided on a separate, pack-in cartridge. Lastly, from our fellow Japanese friends, we have Hyper Chou Pro Yakyuu '92 for the Game Gear. This is an early variant on the common serie of baseball games for the Game Gear (World Series Baseball '95, Nomo's World Series Baseball, etc.), maybe the first, being released in 1992.

Maxim Site Admin Joined: 19 Oct 1999 Posts: 14745 Location: London	Posted: Sun Aug 27, 2006 7:59 pm
	As far as I can tell, the *.4 BIOSes (2.4, 3.4, 4.4) are all pretty much the same, same year, same functionality, same ROM checking code, so their versioning is fairly meaningless. Wasn't the Alex Kidd BIOS released in the USA?

APE Joined: 31 May 2006 Posts: 11	Posted: Tue Sep 05, 2006 6:50 am
APE Joined: 31 May 2006 Posts: 11	Would it be possible to socket or piggy back bios chips onto standard SMS'? I'd love to play a handful of games with a mere switch.

Maxim Site Admin Joined: 19 Oct 1999 Posts: 14745 Location: London	Posted: Tue Sep 05, 2006 12:11 pm
	You could certainly piggyback original BIOS chips, and use a switch to select between them, because as far as I know they're interchangeable. However, you can't achieve the same using an EPROM because all but the most basic BIOSes require bankswitching hardware to be integrated into the ROM (it's not something you can program into an EPROM).

Bock Site Admin Joined: 08 Jul 2001 Posts: 8652 Location: Paris, France	Posted: Tue Sep 05, 2006 12:44 pm
	Maxim wrote Wasn't the Alex Kidd BIOS released in the USA? Right; it was in the Sega Master System II.

Forums

View topic - Missile Defense 3-D [BIOS] (SMS), Hyper Chou Pro Yakyuu '92 (GG)