Add to Zero Extended (ADDZE/addze)

Add to Zero Extended XO-form
addze RT,RA (OE=0 Rc=0)
addze. RT,RA (OE=0 Rc=1)
addzeo RT,RA (OE=1 Rc=0)
addzeo. RT,RA (OE=1 Rc=1)
RT <= (RA) + CA
The sum (RA) + CA is placed into register RT.
Special Registers Altered:
CA CA32
CR0 (if Rc=1)
SO OV OV32 (if OE=1)