Renesas Renasas Single-Chip Microcomputer SH7086 Manuel d'utilisateur télécharger pdf (Page 60)

3.2 Functions

Chapter 3 Functions

Add without carry

ADDition

[ Related Instructions ] ADC,ADCF,SBB,SUB

ADD ADD

[ Syntax ]

ADD.size (:format) src,dest

[ Flag Change ]

ADD.B A0,R0L

ADD.B R0L,A0

ADD.B Ram:8[SB],R0L

ADD.W #2,[A0]

G , Q , S (Can be specified)

B , W

[ Operation ]

dest dest + src

Conditions

O : The flag is set when a signed operation resulted in exceeding +32767 (.W) or –32768 (.W) or

+127 (.B) or –128 (.B); otherwise cleared.

S : The flag is set when the operation resulted in MSB = 1; otherwise cleared.

Z : The flag is set when the operation resulted in 0; otherwise cleared.

C : The flag is set when an unsigned operation resulted in exceeding +65535 (.W) or +255 (.B);

otherwise cleared.

[ Description Example ]

; A0’s 8 low-order bits and R0L are added.

; R0L is zero-expanded and added with A0.

UIOBSZDC

142

[ Instruction Code/Number of Cycles ]

Page=

Change

Flag

[ Function ]

• This instruction adds

dest

and

src

together and stores the result in

dest

• If

dest

is an A0 or A1 when the size specifier (.size) you selected is (.B),

src

is zero-expanded to

perform calculation in 16 bits. If

src

is an A0 or A1, operation is performed on the eight low-order bits

of the A0 or A1.

• If

dest

is a stack pointer when the size specifier (.size) you selected is (.B),

src

is sign extended to

perform calculation in 16 bits.

[ Selectable src/dest ]

src dest

R0L/R0 R0H/R1 R1L/R2 R1H/R3 R0L/R0 R0H/R1 R1L/R2 R1H/R3

A0/A0

A1/A1

[A0] [A1] A0/A0

A1/A1

[A0] [A1]

dsp:8[A0] dsp:8[A1] dsp:8[SB] dsp:8[FB] dsp:8[A0] dsp:8[A1] dsp:8[SB] dsp:8[FB]

dsp:16[A0] dsp:16[A1] dsp:16[SB] abs16 dsp:16[A0] dsp:16[A1] dsp:16[SB] abs16

dsp:20[A0] dsp:20[A1] abs20 #IMM dsp:20[A0] dsp:20[A1] abs20 SP/SP

R2R0 R3R1 A1A0 R2R0 R3R1 A1A0

*1 If you specify (.B) for the size specifier (.size), you cannot choose A0 or A1 for

src

and

dest

simultaneously.

*2 Operation is performed on the stack pointer indicated by the U flag. You can choose only #IMM for

src

(See the next page for

src

dest

classified by format.)

1 2 ... 55 56 57 58 59 60 61 62 63 64 65 ... 307 308

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