User’s Manual
C166S V1 SubSystem
Detailed Instruction Set
User’s Manual
6-64
V 1.6, 2001-08
MUL
Signed Multiplication
MUL
Group
Arithmetic Instructions
Syntax
MUL op1, op2
Source Operand(s)
op1, op2
→
WORD
Destination Operand(s)
MD
→
DOUBLEWORD
Operation
(MD)
←
(op1) * (op2)
Description
Performs a 16-bit by 16-bit signed multiplication using the two words specified by
operands op1 and op2 respectively. The signed 32-bit result is placed in the MD
register.
CPU Flags
E
Always cleared.
Z
Set if result equals zero. Cleared otherwise.
V
This bit is set if the result cannot be represented in a word data type.
Cleared otherwise.
C
Always cleared.
N
Set if the most significant bit of the result is set. Cleared otherwise.
Encoding
E
Z
V
C
N
0
*
*
0
*
Mnemonic
Format
Bytes
MUL
Rw
n
, Rw
m
0B nm
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: ......