Mod_bus problem

[tormod@hoyemweb.no]

1. Custom values are not used when bus_address is specified directly, it will only be used when creating object mapping manually from UI

2. Bitmask cannot be zero, correct bitmask should be 1, 2, 4 and 8 for each bit starting from lowest one:
0001b = 1
0010b = 2
0100b = 4
1000b = 8

Thanks!