User’s Manual
C166S V1 SubSystem
Detailed Instruction Set
User’s Manual
6-66
V 1.6, 2001-08
NEG
Integer Two’s Complement
NEG
Group
Arithmetic Instructions
Syntax
NEG op1
Source Operand(s)
op1
→
WORD
Destination Operand(s)
op1
→
WORD
Operation
(op1)
←
0 - (op1)
Description
Performs a binary 2’s complement of the source operand specified by op1. The result is
then stored in op1.
CPU Flags
E
Set if the value of op1 represents the lowest possible negative number.
Cleared otherwise. Used to signal the end of a table.
Z
Set if result equals zero. Cleared otherwise.
V
Set if an arithmetic underflow occurred, i.e. the result cannot be
represented in the word data type. Cleared otherwise.
C
Set if a borrow is generated. Cleared otherwise.
N
Set if the most significant bit of the result is set. Cleared otherwise.
Encoding
E
Z
V
C
N
*
*
*
*
*
Mnemonic
Format
Bytes
NEG
Rw
n
81 n0
2
Содержание C166S V1 SubSystem
Страница 10: ...User s Manual C166S V1 SubSystem User s Manual I 6 V 1 6 2001 08...
Страница 16: ...User s Manual C166S V1 SubSystem Introduction User s Manual 1 6 V 1 6 2001 08...
Страница 126: ...User s Manual C166S V1 SubSystem Central Processing Unit User s Manual 3 96 V 1 6 2001 08...
Страница 178: ...User s Manual C166S V1 SubSystem Memory Organization User s Manual 4 52 V 1 6 2001 08...
Страница 206: ...User s Manual C166S V1 SubSystem Instruction Set User s Manual 5 28 V 1 6 2001 08...
Страница 306: ...User s Manual C166S V1 SubSystem Detailed Instruction Set User s Manual 6 100 V 1 6 2001 08...
Страница 362: ...User s Manual C166S V1 SubSystem The External Bus Interface User s Manual 8 40 V 1 6 2001 08...
Страница 452: ...User s Manual C166S V1 SubSystem General Purpose Timer Unit User s Manual 12 44 V 1 6 2001 08...
Страница 454: ...User s Manual C166S V1 SubSystem Instruction Index User s Manual 13 2 V 1 6 2001 08...
Страница 459: ......