Well it may be that i am more used to Commodore bridgeboards, but yet the Commodore ones operate by themselves when the Amiga boots and can be called back and forth, the GG has to be launched from WB or CLI. Janus software seems to me more easily integrated, that's why there is a useful tool like Etherbridge. They leave the serial port and the parallel ports to the Amiga unless given to the BB in the settings, while the GG seems to take control of them no matter what i do, which leave me with no free IRQ and won't let me use them from the Amiga side when launched (for instance MIDI music through MIDI serial adapter and external synth or MAS Player on parallel). It seems the GG mouse has some compatibility problem. Just tried Dune so far and the mouse went crazy. The AMouse from Commodore has no problem of compatibility except in Norton Commander. The A2386 also have a video switcher option, which should plug into the external port generally mistaken for a ps2 port.
Still, i can't fathom how to remove COM2 and LPT. The bios setting are only to map them to the Amiga or to an ISA controller, but even with no ISA controller the GG gives them 2 IRQ. Surely someone has succeded in using an audio board before.
I need IRQ5 for the SB mode, IRQ2 for the MPU401 interface and my card can use another onboard MPU401 interface allocated to a waveblaster board which needs another IRQ and port (the great MK8330 from Keropi and Marmes, awesome card).
The GG bios won't let the user see the IRQ list, i used Norton Sysinfo to check them.