HP HP-11C

220 Appendix A: Error Conditions
Note: Error 2 is also displayed if division by zero or the
square root of a negative number would be required during
computation with any of the following formulas:
_ / M , N P
Sy = —_— Sy = —_— r=———
n(n—1)
n(n—1)
VvM-N
P _ M3Zy—P3x (A and B are the values
A=—— B=—— .
M n'M returned by the operation
(LR.], where y = Ax + B.)
9= M3Iy+P(n-x—3x)
n-M
where:
M=n3x?—(3x)?
N=n3y?- (3y)*
P=n3xy—3x3y
Error 3: Improper Register Number
Named storage register currently converted to program memory, or
nonexistent storage register.
Error 4: Improper Line Number or Label Call
Line number called for is currently unoccupied, or nonexistent
(>203), attempt to load more than 203 lines of program memory, or
label called does not exist.
Error 5: Subroutine Level Too Deep.
Subroutine nested more than four deep.
Error 6: Improper Flag Number:
Attempted flag name > 1.
Error 9: Service
Refer to page 233, Verifying Proper Operation
Pr Error
Continuous memory reset because of power failure.