mhf ( u8 idx, u16 sel, u16 val, u8 bands)

1. Initialize array addr with values 0x5E, 0x60, 0x62, 0x78, 0xD4
2. Create a struct wlcband (defined below) named band
3. If bands is 0 or 3

   1. set band to band

4. Else if bands is 1

   1. Set band to bandstate[1]

5. Else if bands is 2

   1. Set band to bandstate[0]

6. Otherwise
   1. Issue warning and set band to NULL
7. If band is not NULL

   1. Set tmp to band->mhfs[idx]

   2. Maskset band->mhfs[idx] to band->mhfs[idx] with mask ~(sel) and set with val

   3. If the interface is up AND band->mhfs[idx] is not equal to tmp AND band equals band

      1. Write band->mhfs[idx] to Shared Memory Address addr[idx]

8. If bands is 3

   1. MaskSet bandstate[0].mhfs[idx] with mask ~(sel) and set with val

   2. MaskSet bandstate[1].mhfs[idx] with mask ~(sel) and set with val

struct wlcband {int bandtype; u32 bandunit; u16 mhfs[3]; }