Toshiba 6F3B0250, PROSEC T1 T1S user manual FUN Addition with carry

6F3B0250

7. Instructions

FUN 035

+C

Addition with carry

Expression

Input -[ A +C B ® C ]- Output

Function

When the input is ON, the data of A, B and the carry flag (CF = S050) are added, and the result is stored in C. If carry is occurred in the operation, the carry flag is set to ON. If the result is greater than 32767 or smaller than -32768, the output is turned ON.

This instruction is used to perform unsigned addition or double-length addition.

Execution condition

Input		Operation		Output	CF
OFF	No execution			OFF	-
ON	Execution	Normal	No carry	OFF	Reset
			Carry occurred	OFF	Set
		Overflow /	No carry	ON	Reset
		underflow	Carry occurred	ON	Set

Operand

Name

Device

Register

Constant

Index

X

Y

R

S

T.

C.

XW

YW

RW

SW

T

C

D

I

J

K

A

Augend

Ö

Ö

Ö

Ö

Ö

Ö

Ö

Ö

Ö

Ö

Ö

Ö

B

Addend

Ö

Ö

Ö

Ö

Ö

Ö

Ö

Ö

Ö

Ö

Ö

Ö

C

Sum

Ö

Ö

Ö

Ö

Ö

Ö

Ö

Ö

Ö

Ö

Example

When R013 is ON, the data of double-length registers D0101×D0100 and RW21×RW20 are added, and the result is stored in D0201×D0200. The RSTC is a instruction to reset the carry flag before starting the calculation.

If the data of D0101×D0100 is 12345678 and RW21×RW20 is 54322, the result 12400000 is stored in D0201×D0200.

D0101×D0100

RW21×RW20

12345678

+ D0201×D0200

54322

12400000

Basic Hardware and Function 167

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