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  • Joined: 21 Apr 2019
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SMS expansion port stuff
Post Posted: Wed May 15, 2019 7:25 pm
Post stuff related to the SMS expansion port.
AFAIK, it's just a gender-inverted version of the cart port.
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  • Joined: 05 Nov 2014
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  • Location: Auckland - NZ
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Post Posted: Fri May 17, 2019 4:27 am
Its esentially the same as the western cart slot but its male instead of female. The pinout is also crossed over, or mirrored between the top and bottom sides. You can make an adapter with two females sockets and cross the sides over and games will work from it. This can be useful as you can use this adapter on a JP console to play western games. You can also use it as a third port for dumping games.

Im not sure if any official hardware was released that made use of the expansion port on the master system. Its useful for adding an FM module though.
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  • Joined: 19 Oct 1999
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Post Posted: Fri May 17, 2019 5:44 am
No, nothing official was ever released for it. Presumably the floppy disk attachment used it.
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  • Joined: 20 Dec 2004
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Post Posted: Fri May 17, 2019 1:17 pm
I think there's actually a five cartidge demo slot that used the port that got a "release" in europe.
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  • Joined: 21 Apr 2019
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Post Posted: Fri May 17, 2019 2:14 pm
Maxim wrote
No, nothing official was ever released for it. Presumably the floppy disk attachment used it.
There was a floppy disk attachment?
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Post Posted: Fri May 17, 2019 3:35 pm
Unreleased, yes.

http://www.smspower.org/forums/6174-SegaMasterSystemDiskSystemFloppyDiskDriveFDD
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