16 extsgn sign extend word – Texas Instruments MSP50C614 User Manual
Page 189
Individual Instruction Descriptions
4-97
Assembly Language Instructions
4.14.16
EXTSGN
Sign Extend Word
Syntax
[label]
name
dest [, mod]
Clock,
clk
Word,
w
With RPT,
clk
Class
EXTSGN
A
n[~] [, next A]
1
1
n
R
+3
3
Execution
[premodify AP if
mod specified]
new most significant word of
dest
⇐
STAT.SF
PC
⇐
PC + 1
Flags Affected
None
Opcode
Instructions
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
EXTSGN A
n[~] [, next A]
1
1
1
0
0
next A
A
n
0
1
1
1
1
0
0
~A
Description
Copy accumulator sign flag (SF) to all 16 bits of A
n[~].
See Also
EXTSGNS
Example 4.14.16.1
EXTSGN A0~, ++A
Preincrement accumulator pointer AP0. Sign extend the accumulator A0~.