ST72361AR4-Auto datasheet(222/279 Pages) STMICROELECTRONICS

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Instruction set

ST72361xx-Auto

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Doc ID 12468 Rev 3

The pointer address follows the opcode. The indirect addressing mode consists of two

submodes:

Indirect (short)

The pointer address is a byte, the pointer size is a byte, thus allowing 00 - FF addressing

space, and requires 1 byte after the opcode.

Indirect (long)

The pointer address is a byte, the pointer size is a word, thus allowing 64 Kbyte addressing

space, and requires 1 byte after the opcode.

18.1.6

Indirect indexed (short, long)

This is a combination of indirect and short indexed addressing modes. The operand is

referenced by its memory address, which is defined by the unsigned addition of an index

the opcode.

The indirect indexed addressing mode consists of two submodes:

Indirect indexed (short)

The pointer address is a byte, the pointer size is a byte, thus allowing 00 - 1FE addressing

space, and requires 1 byte after the opcode.

Indirect indexed (long)

The pointer address is a byte, the pointer size is a word, thus allowing 64 Kbyte addressing

space, and requires 1 byte after the opcode.

Table 88.

Instructions supporting direct, indexed, indirect and indirect indexed

addressing (part 1)

Long and short instructions

Function

Load

Compare

AND, OR, XOR

Logical Operations

ADC, ADD, SUB, SBC

Arithmetic Additions/Substractions operations

BCP

Bit Compare

Table 89.

Instructions supporting direct, indexed, indirect and indirect indexed

addressing (part 2)

Short instructions only

Function

CLR

Clear

INC, DEC

Increment/Decrement

TNZ

Test Negative or Zero

CPL, NEG

1 or 2 Complement

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