0x22 ( 34 )  Line Interrupt control
  
BitsDescription
7(R) Indicates if the ula is asserting an interrupt (even if disabled)
7:3Reserved, must be 0
2Disables ula interrupt (soft reset = 0)**
1Enables line Interrupt (soft reset = 0)**
0MSB of line interrupt value (soft reset = 0)

** Aliases of interrupt enable bits in nextreg 0xC4