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Performa 6116 - Apple Dos Compatibility Card - Roland MT-32

68kMLA Software 12 posts Aug 14, 2013 to Jul 15, 2019
The answer is a big "maybe". Apple's own pinout doesn't show the game port outputting MIDI signals, but that doesn't mean its true. If you have the card, I would do testing with a multimeter and see if +5V is present on pin 15 of the game port. If so, I wouldn't connect any MIDI device to the machine as that is supposed to be the MIDI-IN pin!

http://support.apple.com/kb/TA31667?viewlocale=en_US

Interesting... can programs running on the DOS card/s access a Mac serial MIDI converter?
Not possible. The defacto standard for external MIDI port communication on a DOS machine is a UART located at 300h or 330h that is register compatible with the Roland MPU-401 MIDI interface. Its silly that the joystick port doesn't support MIDI. The Creative Labs VIBRA chip set used for sound on the DOS card has all the necessary functionality built into it.

mp.ls