Could be, the BIOS isn't running far enough to access those ports. FWIW it currently tries to read from f841 (pic status?), then reads in fb00 to fb4f, clears fb00 to fb0f and writes 0xff to fb01. Then loops playing around with fb81 and f941 (pics?). I haven't really debugged it yet. I have no experience with the i186, so it might need the peripheral callback hooking up too?