Z8F021ASH020SC datasheet(212/276 Pages) ZILOG

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PS022815-0206

eZ8 CPU Instruction Set

Z8 Encore! XP® 4K Series

Product Specification

193

Table 118 contains additional symbols that are used throughout the Instruction Summary

and Instruction Set Description sections.

Table 117. Notational Shorthand

Notation Description

Operand Range

Bit

b represents a value from 0 to 7 (000B to 111B).

Condition Code

—

See Condition Codes overview in the eZ8 CPU

User Manual.

Direct Address

Addrs

Addrs. represents a number in the range of

0000H to FFFFH

Extended Addressing Register

Reg

Reg. represents a number in the range of 000H to

FFFH

Immediate Data

#Data

Data is a number between 00H to FFH

Indirect Working Register

@Rn

n = 0 –15

Indirect Register

@Reg

Reg. represents a number in the range of 00H to

FFH

Irr

Indirect Working Register Pair

@RRp

p = 0, 2, 4, 6, 8, 10, 12, or 14

IRR

Indirect Register Pair

@Reg

Reg. represents an even number in the range

00H to FEH

Polarity

Polarity is a single bit binary value of either 0B or

1B.

Working Register

n = 0 – 15

Reg

Reg. represents a number in the range of 00H to

FFH

Relative Address

X represents an index in the range of +127 to –

128 which is an offset relative to the address of

the next instruction

Working Register Pair

RRp

p = 0, 2, 4, 6, 8, 10, 12, or 14

Reg

Reg. represents an even number in the range of

00H to FEH

Vector

Vector Address

Vector

Vector represents a number in the range of 00H

to FFH

Indexed

#Index

The register or register pair to be indexed is offset

by the signed Index value (#Index) in a +127 to

-128 range.

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