chk
Sizes
word
Default Size
word
Affected Flags
X
N
Z
V
C
-
✱
-
-
-
Operands
Op 1
Dn/(An)/d(An)/d(An,Xn)/Ea/<label>/d(PC)/d(PC,Xn)/Im
Op 2
Dn
Checks a signed data-register word against zero and a signed upper bound, ending the run with a CHK exception when it is outside that range.