full = immi -249334698 ; 0xf1237456
p = allocp 4
sti full p 0

n0chk = immi 29782 ; sign_extend(0x7456)
n1chk = immi 61731 ; sign_extend(0xf123)

n0 = ldus2ui p 2
n1 = ldus2ui p 0

; Collate the results.
r0 = xori n0chk n0
r1 = xori n1chk n1

r = ori r0 r1
reti r