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Individual Instruction Descriptions
4-171
Assembly Language Instructions
4.14.76 SHRACS Shift Accumulator String Right
Syntax
[label] name dest, src
Clock,
clk
Word,
w
With RPT,
clk
Class
SHRACS A
n
[~], A
n
[~] n
S
+3 1 n
R
+3 3
Execution
dest
⇐
src
>> 1
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
SHRACS A
n
[~], A
n
[~] 1 1 1 0 0 1 1 A
n
0 1 0 1 1 0 A~ ~A
Description Shift accumulator string right one bit and store the result into A
n
[~] string. MSB
of each accumulator in the result will be set according to extended sign mode
(XM) bit in the status register. This instruction shifts each accumulator
individually 1 bit to the right, so, shifts from one accumulator are not
propagated to the next consecutive accumulator in the string.
See Also SHRAC, SHL, SHLS, SHLAPL, SHLAPLS, SHLSPL, SHLSPLS, SHLTPL,
SHLTPLS.
Example 4.14.76.1 SHRACS A0, A0
Shift accumulator string A0 1 bit right individually.
Example 4.14.76.2 SHRACS A1, A1~
Shift accumulator string A1~ individually, put result in accumulator string A1.