PORTIBM PC Portable (uses same BIOS as XT) 034C-034F - Gravis UltraMax by Advanced Gravis
Range: The I/O address range is dipswitch selectable from:
0200-020F and 0300-030F
0210-021F and 0310-031F
0220-022F and 0320-032F
0230-023F and 0330-033F
0240-024F and 0340-034F
0250-025F and 0350-035F
0260-026F and 0360-036F
0270-027F and 0370-037F