S3C72G9 Просмотр технического описания (PDF) - Samsung

Номер в каталоге

Компоненты Описание

производитель

S3C72G9

SAM47 INSTRUCTION SET

Samsung 





 

FLEXIBLE BIT MANIPULATION

In addition to normal bit manipulation instructions like set and clear, the SAM47 instruction set can also perform bit

tests, bit transfers, and bit Boolean operations. Bits can also be addressed and manipulated by special bit

addressing modes. Three types of bit addressing are supported:

— mema.b

— memb.@L

— @H+DA.b

The parameters of these bit addressing modes are described in more detail in Table 5-2.

Table 5-2. Bit Addressing Modes and Parameters

Addressing Mode

Addressable Peripherals

mema.b

ERB, EMB, IS1, IS0, IEx, IRQx

Ports

memb.@L

BSCx, Ports

@H+DA.b

All bit-manipulatable peripheral hardware

Address Range

FB0H-FBFH

FF0H-FFFH

FC0H-FFFH

All bits of the memory bank specified by

EMB and SMB that are bit-manipulatable

,   0*%

 
  

 

The following instructions have a skip function when an overflow or borrow occurs:

XCHI

XCHD

LDI

LDD

INCS

DECS

ADS

SBS

If there is an overflow or borrow from the result of an increment or decrement, a skip signal is generated and a

skip is executed. However, the carry flag value is unaffected.

The instructions BTST, BTSF, and CPSE also generate a skip signal and execute a skip when they meet a skip

condition, and the carry flag value is also unaffected.



Share Link: