MC68008L Просмотр технического описания (PDF) - Motorola => Freescale

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MC68008L

8-/16-/32-Bit Microprocessors User’s Manual

Motorola => Freescale 

Freescale Semiconductor, Inc.

Notation for operands:

PC — Program counter

SR — Status register

V — Overflow condition code

Immediate Data — Immediate data from the instruction

Source — Source contents

Destination — Destination contents

Vector — Location of exception vector

+inf — Positive infinity

–inf — Negative infinity

<fmt> — Operand data format: byte (B), word (W), long (L), single

(S), double (D), extended (X), or packed (P).

FPm — One of eight floating-point data registers (always

specifies the source register)

FPn — One of eight floating-point data registers (always

specifies the destination register)

Notation for subfields and qualifiers:

<bit> of <operand> — Selects a single bit of the operand

<ea>{offset:width} — Selects a bit field

(<operand>) — The contents of the referenced location

<operand>10 — The operand is binary-coded decimal, operations are

performed in decimal

(<address register>) — The register indirect operator

–(<address register>) — Indicates that the operand register points to the memory

(<address register>)+ — Location of the instruction operand—the optional mode

qualifiers are –, +, (d), and (d, ix)

#xxx or #<data> — Immediate data that follows the instruction word(s)

Notations for operations that have two operands, written <operand> <op> <operand>,

where <op> is one of the following:

→ — The source operand is moved to the destination operand

↔ — The two operands are exchanged

+ — The operands are added

– — The destination operand is subtracted from the source

operand

× — The operands are multiplied

÷ — The source operand is divided by the destination

operand

< — Relational test, true if source operand is less than

destination operand

> — Relational test, true if source operand is greater than

destination operand

V — Logical OR

⊕ — Logical exclusive OR

Λ — Logical AND

MOTOROLA

M68000 8-/16-/32-BIT MICROPROCESSOR USER’S MANUAL

2-9

For More Information On This Product,

Go to: www.freescale.com

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