Delta-electronics Extension Digital I/O Module DOP-EXIO14RAE Uživatelský manuál stáhnout pdf (Strana 114)

Appendix D Use of Application Instructions|DOP-EXIO Series

Revision March, 2008, Doc. Name: 2007PDD23000014 D-33

Mnemonic Operands Function

MUL D

Multiplication

Bit Devices Word Devices

X Y M S K H KnX KnY KnM KnS T C D E F

          

      

y Note:

1. If S

and S

are used in device F, only 16-bit instruction is applicable.

2. If D is used in device E, only 16-bit instruction is applicable.

16-bit instruction (7 Steps)

MUL

Continuous

execution

32-bit instruction (13 Steps)

DMUL

Continuous

execution

y Flags: None

Operands:

: Multiplicand

: Multiplicator

: Product

Explanations:

1. This instruction multiplies S

by S

in BIN format and stores the result in D. Be careful with the

positive/negative signs of

, S

and D when doing 16-bit and 32-bit operations.

2. In 16-bit BIN multiplication,

b15................ b00

b15................ b00 b31............ b16 b15.............b00

b15 is a symbol bit b15 is a symbol bit

b31 is a symbol bit D+1) (b15 of

Symbol bit = 0 refers to a positive value.

Symbol bit = 1 refers to a negative value.

When D serves as a bit device, it can designate K1 ~ K8 and construct a 32-bit result.

3. 32-bit BIN multiplication,

b31.. b16

b31 is a symbol bit b31 is a symbol bit

b63 is a symbol bit ) (b15 of D+3

Symbol bit = 0 refers to a positive value.

Symbol bit = 1 refers to a negative value.

b15.. b00 b31.. b16 b15.. b00

b63. b48 b47. b32 b31. b16 b15. b00

+3 +2 +1

When D serves as a bit device, it can designate K1 ~ K8 and construct a 32-bit result, but only

stores low 32-bit data.

1 2 ... 109 110 111 112 113 114 115 116 117 118 119 ... 156 157

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