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This peculiarity may be known by some people, at least in the MSX homebrew scene it's known by a few guys. But I don't think it's common knowledge, hence this post.

A number of later-era Zemina games are dual-system (maybe other companies too?). Without getting too much into technical details, this basically means that the game boots on Master System and MSX1. I don't know the exact mapperchip details, but on MSX it's controlled similar to Konami's "VRC" mapper: http://bifi.msxnet.org/msxnet/tech/megaroms.html#konami

At the moment, the list of known games is small: Cyborg Z, Wonsiin, Superboy 3, Street Master

The tag is:
http://www.smspower.org/Tags/MSXCompatibleROM

Cyborg Z and Super Boy III aren't added in the database yet, they were only recently dumped.

hap wrote

A number of later-era Zemina games are dual-system (maybe other companies too?). Without getting too much into technical details, this basically means that the game boots on Master System and MSX1. I don't know the exact mapperchip details, but on MSX it's controlled similar to Konami's "VRC" mapper: http://bifi.msxnet.org/msxnet/tech/megaroms.html#konami

Does the physical cartridge work in both systems?

No, they don't have the same pinout but it would be possible to build an adapter in theory.

Bock wrote

No, they don't have the same pinout but it would be possible to build an adapter in theory.

I was trying to think why they would go through the trouble of making code that runs on both systems, considering it would be trivial to share all of the code, minus the header and stuff.

The only reason I can think of is being able to buy a larger quantity of the same masked rom.

It could be used to build a Xonox style double ended cartridge.

Author	Message
hap Joined: 24 Jun 2009 Posts: 4 Location: Netherlands	Korean dual-system MSX/SMS game roms Posted: Sun Jul 24, 2011 2:40 am
hap Joined: 24 Jun 2009 Posts: 4 Location: Netherlands	This peculiarity may be known by some people, at least in the MSX homebrew scene it's known by a few guys. But I don't think it's common knowledge, hence this post. A number of later-era Zemina games are dual-system (maybe other companies too?). Without getting too much into technical details, this basically means that the game boots on Master System and MSX1. I don't know the exact mapperchip details, but on MSX it's controlled similar to Konami's "VRC" mapper: http://bifi.msxnet.org/msxnet/tech/megaroms.html#konami At the moment, the list of known games is small: Cyborg Z, Wonsiin, Superboy 3, Street Master

Bock Site Admin Joined: 08 Jul 2001 Posts: 8653 Location: Paris, France	Posted: Sun Jul 24, 2011 4:10 am
	The tag is: http://www.smspower.org/Tags/MSXCompatibleROM Cyborg Z and Super Boy III aren't added in the database yet, they were only recently dumped.

cdoty Joined: 29 Jun 1999 Posts: 68 Location: Houston TX	Posted: Thu Oct 13, 2011 4:09 pm
cdoty Joined: 29 Jun 1999 Posts: 68 Location: Houston TX	hap wrote A number of later-era Zemina games are dual-system (maybe other companies too?). Without getting too much into technical details, this basically means that the game boots on Master System and MSX1. I don't know the exact mapperchip details, but on MSX it's controlled similar to Konami's "VRC" mapper: http://bifi.msxnet.org/msxnet/tech/megaroms.html#konami Does the physical cartridge work in both systems?

Bock Site Admin Joined: 08 Jul 2001 Posts: 8653 Location: Paris, France	Posted: Thu Oct 13, 2011 4:37 pm
	No, they don't have the same pinout but it would be possible to build an adapter in theory.

cdoty Joined: 29 Jun 1999 Posts: 68 Location: Houston TX	Posted: Fri Oct 14, 2011 2:16 am
cdoty Joined: 29 Jun 1999 Posts: 68 Location: Houston TX	Bock wrote No, they don't have the same pinout but it would be possible to build an adapter in theory. I was trying to think why they would go through the trouble of making code that runs on both systems, considering it would be trivial to share all of the code, minus the header and stuff. The only reason I can think of is being able to buy a larger quantity of the same masked rom. It could be used to build a Xonox style double ended cartridge.

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