S3C72G9 Samsung semiconductor, S3C72G9 Datasheet - Page 4

• Manufacturer Part Number: S3C72G9
• Description: The S3C72G9 single-chip CMOS microcontroller has been designed for high performance using Samsungs newest 4-bit CPU core/ SAM47 (Samsung Arrangeable M
• Manufacturer: Samsung semiconductor

 


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.

The following instructions have a skip function when an overflow or borrow occurs:
XCHI
XCHD
LDI
LDD
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.

mema.b
memb.@L
@H+DA.b
Addressing Mode
INCS
DECS
ADS
SBS
ERB, EMB, IS1, IS0, IEx, IRQx
Ports
BSCx, Ports
All bit-manipulatable peripheral hardware
Table 5-2. Bit Addressing Modes and Parameters
Addressable Peripherals
FB0H-FBFH
FF0H-FFFH
FC0H-FFFH
All bits of the memory bank specified by
EMB and SMB that are bit-manipulatable
Address Range