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Individual Instruction Descriptions
4-143Assembly Language Instructions
4.14.48 NEGACS Two’s Complement Negation of Accumulator String
Syntax
[label] name dest, src Clock, clk Word, w With RPT, clk Class
NEGACS An[~], An[~] n
S
+3 1 n
R
+3 3
Execution dest ⇐ –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
MULSPL S An[~], An[~] 1 1 1 0 0 1 1 An 0 0 0 0 0 0 A~ ~A
Description Perform two’s complement negation of src accumulator string and store result
in dest accumulator string.
See Also NEGAC, SUB, SUBB, SUBS, ADD, ADDB, ADDS, NOTAC, NOTACS
Example 4.14.48.1 NEGACS A3~, A3
Negate accumulator string A3 and store result in accumulator string A3~.