Texas Instruments MSP50C614 - Manual (Page 232)

Individual Instruction Descriptions
4-140
4.14.46 NEGAC Two’s Complement Negation of Accumulator
Syntax
[label] name dest, src [,mod] Clock, clk Word, w With RPT, clk Class
NEGAC A n[~], An[~] [, next A] n
S
+3 1 n
R
+3 3
Execution [premodify AP if mod specified]
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
NEGAC A n[~], An[~] [, next A] 1 1 1 0 0 next A A n 0 0 0 0 0 0 A~ ~A
Description Perform two’s complement negation of src accumulator and store result in dest
accumulator.
See Also NEGACS, SUB, SUBB, SUBS, ADD, ADDB, ADDS, NOTAC, NOTACS
Example 4.14.46.1 NEGAC A3~, A3, ––A
Predecrement accumulator pointer AP3. Negate accumulator A3 and store result in accumulator A3~.