COP8CCR9IMT7SLASHNOPB datasheet(94/111 Pages) TI1

94 / 111 page

COP8CBR9, COP8CCR9, COP8CDR9

SNOS535I – OCTOBER 2000 – REVISED MARCH 2013

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Jump Indirect. In this 1-byte instruction, the lower byte of the jump address is obtained from a table

stored in program memory, with the Accumulator serving as the low order byte of a pointer into program

memory. For purposes of accessing program memory, the contents of the Accumulator are written to PCL

(temporarily). The data pointed to by the Program Counter (PCH/PCL) is loaded into PCL, while PCH

remains unchanged.

Example:

Jump Indirect

JID

Reg/

Contents

Memory

Before

After

PCU

01 Hex

PCL

C4 Hex

32 Hex

Accumulator

26 Hex

Memory

Location

32 Hex

0126 Hex

The VIS instruction is a special case of the Indirect Transfer of Control addressing mode, where the

double-byte vector associated with the interrupt is transferred from adjacent addresses in program

memory into the Program Counter in order to jump to the associated interrupt service routine.

5.19.4 INSTRUCTION TYPES

The instruction set contains a wide variety of instructions. The available instructions are listed below,

organized into related groups.

Some instructions test a condition and skip the next instruction if the condition is not true. Skipped

instructions are executed as no-operation (NOP) instructions.

5.19.4.1 Arithmetic Instructions

The arithmetic instructions perform binary arithmetic such as addition and subtraction, with or without the

Carry bit.

Add (ADD)

Add with Carry (ADC)

Subtract with Carry (SUBC)

Increment (INC)

Decrement (DEC)

Decimal Correct (DCOR)

Clear Accumulator (CLR)

Set Carry (SC)

Reset Carry (RC)

5.19.4.2 Transfer-of-Control Instructions

The transfer-of-control instructions change the usual sequential program flow by altering the contents of

the Program Counter. The Jump to Subroutine instructions save the Program Counter contents on the

stack before jumping; the Return instructions pop the top of the stack back into the Program Counter.

Jump Relative (JP)

Functional Description

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Product Folder Links: COP8CBR9 COP8CCR9 COP8CDR9

COP8CCR9IMT7/NOPB Datasheet(PDF) 94 Page - Texas Instruments

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