Omron CS1G/H-CPUxxH Instructions Manual page 375

Data Shift Instructions
Description
Flags
Precautions
354
Area
EM Area without bank
EM Area with bank
Indirect DM/EM
addresses in binary
Indirect DM/EM
addresses in BCD
Constants
Data Registers
Index Registers
Indirect addressing
using Index Registers
NSRL(583) shifts D and D+1 (the shift words) by the specified number of
binary bits (specified in C) to the right (from the leftmost bit to the rightmost
bit). Either zeros or the value of the rightmost bit will be placed into the speci-
fied number of bits of the shift word starting from the rightmost bit.
Contents of "a" or
"0" shifted in
Name Label
Error Flag ER
Equals Flag =
Carry Flag CY
Negative Flag N
For any bits which are shifted outside the specified word, the contents of the
last bit is shifted to the Carry Flag (CY), and all other data is lost.
When the number of bits to shift (specified in C) is "0," the data will not be
shifted. The appropriate flags will turn ON or OFF, however, according to data
in the specified word.
When the contents of the control word C are out of range, an error will be gen-
erated and the Error Flag will turn ON.
D
E00000 to E32766
En_00000 to En_32766
(n = 0 to C)
@ D00000 to @ D32767
@ E00000 to @ E32767
@ En_00000 to @ En_32767
(n = 0 to C)
*D00000 to *D32767
*E00000 to *E32767
*En_00000 to *En_32767
(n = 0 to C)
---
---
---
,IR0 to ,IR15
-2048 to +2047 ,IR0 to -2048 to +2047 ,IR15
DR0 to DR15, IR0 to IR15
,IR0+(++) to ,IR15+(++)
, ( )IR0 to, ( )IR15
– – – – – –
Operation
ON when the control word C (the number of bits to shift)
is not within range.
OFF in all other cases.
ON when the shift result is 0.
OFF in all other cases.
ON when 1 is shifted into the Carry Flag (CY).
OFF in all other cases.
ON when the leftmost bit is 1 as a result of the shift.
OFF in all other cases.
Section 3-9
C
E00000 to E32767
En_00000 to En_32767
(n = 0 to C)
Specified values only
DR0 to DR15
Shift n-bits
Lost