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44
Section 4: Arithmetic and Bit Manipulation Functions
Keystrokes
Display
([STATUS]: 2-16-0000)
66
66 h
Hexadecimal mode.
7 (%]
E h
C annunciator; flag 4 set.
66/7 leaves a remainder.
2(%]
7 h
Noannunciator; flag 4
cleared. E/2 leaves no
remainder.
4
3 h
Remainder of 7/4.
Square Root
The
function calculates the square root of the number in the
X-register. The fractional part of the square root is truncated. If
this fraction is not zero, flag 4 (carry) is set; otherwise, flag 4 is
cleared.
Negative Numbers and Complementing
Changing Signs. The
function (change sign) will change
the sign, forming the complement (1's or 2's) of the number in the
X-register. If the X-register holds the largest possible negative
number in 2's Complement mode, the only effect of pressing
will be to set flag 5 (out-of-range).
In Unsigned mode,
forms a 2's complement and sets flag 5 (G
annunciator) as a reminder that a negative number is outside the
range of Unsigned mode.
To key in a negative number, press
after its digits have been
keyed in.
terminates digit entry in Integer mode.
Absolute Value. Pressing 9]
converts the number in the
X-register to its absolute value, forming the 1's or 2's complement
of a negative number. There is no change if the calculator is in
Unsigned mode or if the numberis positive.
If the X-register holds the largest possible negative number in 2's
Complement mode, the only effect of
will be to set flag 5
(out-of-range).
Logical Operations
The logical (Boolean) operations NOT, OR, AND, and EXCLU-
SIVE OR return the results of a bit-by-bit analysis of a binary
number. The functions [OR], [AND], and
operate on the bits in
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