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Individual Instruction Descriptions
4-145Assembly Language Instructions
4.14.50 NOTAC One’s Complement Negation of Accumulator
Syntax
[label] name dest, src [, mod] Clock, clk Word, w With RPT, clk Class
NOTAC An[~], An[~] [, next A] 1 1 n
R
+3 3
Execution [premodify AP if mod specified]
dest ⇐ NOT src
PC ⇐ PC + 1
Flags Affected OF, SF, ZF, CF are set accordingly
Opcode
Instructions 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
NOTAC An[~], An[~] [, next A] 1 1 1 0 0 next A An 0 0 0 0 1 0 A~ ~A
Description Premodify accumulator pointer if specified. Perform one’s complement of src
accumulator and store result in dest accumulator.
See Also NOTACS, AND, ANDB, ANDS, OR, ORB, ORS, XOR, XORB, XORS,
NEGAC, NEGACS
Example 4.14.50.1 NOTAC A3~, A3, ––A
Predecrement accumulator pointer AP3. One’s complement (invert bits) accumulator A3 and put result
in accumulator A3~.