Renesas Renasas Single-Chip Microcomputer SH7086 Manual de usuario descargar pdf (Pagina 139)

121

3.2 Functions

Chapter 3 Functions

String MOVe Forward

Transfer string forward

[ Syntax ]

SMOVF.size

[ Description Example ]

[ Related Instructions ] SMOVB,SSTR

SMOVF SMOVF

[ Flag Change ]

SMOVF.W

B , W

Flag

Change

UIOBSZDC

[ Operation ]

[ Instruction Code/Number of Cycles ]

Page=

233

[ Function ]

• This instruction transfers string in successively address incrementing direction from the source ad-

dress indicated by 20 bits to the destination address indicated by 16 bits.

• Set the 4 high-order bits of the source address in R1H, the 16 low-order bits of the source address in

A0, the destination address in A1, and the transfer count in R3.

• The A0 or A1 when the instruction is completed contains the next address of the last-read data.

• If an interrupt request is received during instruction execution, the interrupt is acknowledged after one

data transfer is completed.

• This instruction arithmetically shifts

dest

left or right the number of bits indicated by

src

. The bit

*1 If you set a value 0 in R3, this instruction is ingored.

*2 If A0 overflows, the content of R1H is incremented by 1.

When size specifier (.size) is (.W)

Repeat

M(A1) M(2

R1H + A0)

A0 + 2

A1 A1 + 2

R3 R3 – 1

Until R3 = 0

When size specifier (.size) is (.B)

Repeat

M(A1) M(2

R1H + A0)

*2*

A0 + 1

A1 A1 + 1

R3 R3 – 1

Until R3 = 0

1 2 ... 134 135 136 137 138 139 140 141 142 143 144 ... 307 308

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