Delta DVP-ES2/EX2/SS2/SA2/SX2/SE manual Mnemonic Operands Function Controllers, Mul

DVP - ES2/EX2/SS2/SA2/SX2/SE Operation Manual - Programming

API

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Mnemonic Operands Function Controllers

D	MUL	P	Multiplication	ES2/EX2	SS2	SA2	SX2
						SE

Type

Bit Devices

Word devices

Program Steps

OP

X

Y

M

S

K

H

KnX

KnY

KnM

KnS

T

C

D

E

F

MUL, DMULP: 7 steps

S1

*

*

*

*

*

*

*

*

*

*

DMUL, DMULP: 13 steps

S2

*

*

*

*

*

*

*

*

*

*

D

*

*

*

*

*

*

*

PULSE

16-bit

32-bit

ES2/EX2

SS2

SA2

SX2

ES2/EX2

SS2

SA2

SX2

ES2/EX2

SS2

SA2

SX2

SE

SE

SE

Operands:

S1: Multiplicand

S2: Multiplicator

D: Product

Explanations:

1.This instruction multiplies S1 by S2 in BIN format and stores the result in D. Care should be taken on positive/negative signs of S1, S2 and D when doing 16-bit and 32-bit operations.

2.MSB = 0, positive; MSB = 1, negative.

3.If operands S1, S2 use index F, then only 16-bit instruction is available.

4.If operand D use index E, then only 16-bit instruction is available.

5.16-bit BIN multiplication

					+1
b15	b00	b15	b00	b31	............ b16	b15	b00
	X		=
b15 is the sign bit		b15 is the sign bit		b31 is hte sign bit(b15 of D+1)
b15=0,S1 is a positive value		b15=0,S2 is a positive value		b31=0,D(D+1) is a positive value
B15=1,S1 is a negative value		b15=1,S2 is a negative value		b31=1,D(D+1) is a negative value

If D is specified with a bit device, it can designate K1 ~ K4 to store a 16-bit result. Users can use consecutive 2 16-bit registers to store 32-bit data.

6.32-bit BIN multiplication

+1	+1	+3	+2	+1
b31.. b16 b15.. b00	b31.. b16 b15.. b00	b63. b48 b47. b32 b31. b16			b15. b00
X		=
b31 is the sign bit	b31 is the sign bit	b63 is the sign bit(b15 of D+3)
B31=0,S1(S1+1) is a positive value b31=0,S2(S2+1) is a positive value			b63=0, D~(D+3) is a positive value

b31=1,S1(S1+1) is a negative value b31=1,S2(S2+1) is a negative value b63=1, D~(D+3) is a negative value

If D is specified with a word device, it can specify K1~K8 to store a 32-bit result. Users can use 2 consecutive 32-bit registers to store 64-bit data.

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