ST7FOXU0 datasheet(87/123 Pages) STMICROELECTRONICS

87 / 123 page

ST7FOXU0

Instruction set

87/123

11.1.7

Relative modes (direct, indirect)

This addressing mode is used to modify the PC register value by adding an 8-bit signed

offset to it.

The relative addressing mode consists of two submodes:

Relative mode (Direct)

The offset follows the opcode.

Relative mode (Indirect)

The offset is defined in memory, of which the address follows the opcode.

Short instructions only

CLR

Clear

INC, DEC

Increment/decrement

TNZ

Test negative or zero

CPL, NEG

1 or 2 complement

BSET, BRES

Bit operations

BTJT, BTJF

Bit test and jump operations

SLL, SRL, SRA, RLC, RRC

Shift and rotate operations

SWAP

Swap nibbles

CALL, JP

Call or jump subroutine

Table 35.

Instructions supporting direct, indexed, indirect and indirect indexed

addressing modes (continued)

Instructions

Function

Table 36.

Instructions supporting relative modes

Available Relative Direct/Indirect instructions

Function

JRxx

Conditional jump

CALLR

Call relative

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