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Figure 2. AWE64 Legacy back side view schematic
[11] MIDI Host Routing switch
. Allow you to switch between built-in Creative MPU-401 MIDI and
HardMPU MIDI host controllers.
[12] MFBEN (MIDI FeedBack Enable) switch
. Sets MIDI Feedback Enable function ON or OFF (must be
disabled in order for the AWE64 built-in MPU-401 host controller to function).
[13] Discrete OPL3 FM Synth switch
. Sets Yamaha OPL3 synthesizer ON or OFF. Please, note that
"ON" position disables OPL3, while "OFF (1)" position routes OPL3 to the port 388h.
[14] HardMPU IRQ Select switch
. Use it to set the IRQ for HardMPU MIDI host controller (default is
2/9).
[15] HardMPU Port Select
. Use it to set the port for HardMPU MIDI host controller (default is 330h).
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