Omron CS1G/H-CPUxxH Instructions Manual page 457

Conversion Instructions
Description
Flags
436
Area
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
NEG(160) calculates the 2's complement of S and writes the result to R. The
2's complement calculation basically reverses the status of the bits in S and
adds 1.
Note This operation (reversing the status of the bits and adding 1) is equivalent to
subtracting the content of S from 0000.
Name
Error Flag ER
Equals Flag =
Negative Flag N
Note The result for 8000 hex will be 8000 hex.
S
En_00000 to En_32767
(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)
#0000 to #FFFF
(binary)
DR0 to DR15
---
,IR0 to ,IR15
–2048 to +2047 ,IR0 to –2048 to +2047 ,IR15
DR0 to DR15, IR0 to IR15
,IR0+(++) to ,IR15+(++)
,–(– –)IR0 to, –(– –)IR15
2's complement
(Complement + 1)
(S)
Label
OFF
ON if the result is 0000.
OFF in all other cases.
ON if bit 15 of the result is ON.
OFF in all other cases.
Section 3-12
R
---
(R)
Operation