The FLAGS register is the status register that contains the current state of an x86 CPU. The size and meanings of the flag bits are architecture dependent. It usually reflects the result of arithmetic operations as well as information about restrictions placed on the CPU operation at the current time. Some of those restrictions may include preventing some interrupts from triggering, prohibition of execution of a class of "privileged" instructions. Additional status flags may bypass memory mapping and define what action the CPU should take on arithmetic overflow.
The carry, parity, auxiliary carry (or half carry), zero and sign flags are included in many architectures (many modern (RISC) architectures do not have flags, such as carry, and even if they do use flags, then half carry is rare, since BCD math no longer common, and it even has limited support on long mode on x86-64).
In the i286 architecture, the register is 16 bits wide. Its successors, the EFLAGS and RFLAGS registers (in modern x86-64), are 32 bits and 64 bits wide, respectively. The wider registers retain compatibility with their smaller predecessors.
The FLAGSregister is the status register that contains the current state of an x86 CPU. The size and meanings of the flag bits are architecture dependent...
registerflags, implemented in almost all modern processors. On some processors, the status register also contains flags such as these: Status flags enable...
and flying that state's civil ensign on the ship. Ships may be registered under flags of convenience to reduce operating costs, or else to avoid the regulations...
the flying of flags, and holds the only official registers of flags for the UK and much of the Commonwealth. "Scottish Heraldic Flags". The Court of...
flags are commonly used to control or to indicate the outcome of particular operations. Processors have a status register that is composed of flags....
flagsregister can also be directly accessed. The low 8 bits of the flagregister can be loaded into ah using the lahf instruction. The entire flags register...
distinguishable from most corporate flags. These logo flags are not recorded in the flagregister. A municipality may adopt a different flag and/or coat of arms when...
Interrupt). The POPF (Pop Flags) removes a word from the stack into the FLAGSregister, which may result in the Interrupt flag being set or cleared based...
within Brittany. Flags of the French Military Flags of the French Army Flags of the French Navy Flags of the French Air Force These flags have a long tradition...
This is a list of English flags, including symbolic national and sub-national flags, standards and banners used exclusively in England. The College of...
Flag of convenience (FOC) is a business practice whereby a ship's owners register a merchant ship in a ship register of a country other than that of the...
This is a list of flags that are used exclusively in Scotland. Other flags used in Scotland, as well as the rest of the United Kingdom can be found at...
copied to the flagsregister. When this happens, C0 is placed in the carry flag, C2 in the parity flag and C3 in the zero flag. The C2 flag is set when...
The flags of the Confederate States of America have a history of three successive designs during the American Civil War. The flags were known as the "Stars...
certain combinations were supported. The FLAGSregister contains flags such as carry flag, overflow flag and zero flag. Finally, the instruction pointer (IP)...
registered at the Flag Institute and added to their UK FlagsRegister. The creation of the flag came about as a result of a feature on Andy Whittaker's...
16-bit flagsregister. Nine of these condition code flags are active, and indicate the current state of the processor: Carry flag (CF), Parity flag (PF)...
United States Flag Day Flags of the Confederate States of America Flags of the United States Armed Forces Flags of the U.S. states Flag Desecration Amendment...
INC, DEC) do not affect it. Also, bit 1 of the flagsregister (a spare bit on the 8080) is used as a flag N that indicates whether the last arithmetic instruction...
National Flag of Scotland List of British flagsFlags of Europe Flag of Quebec Flag of Tenerife "Visit Athelstaneford. Birthplace of Scotland's Flag" (PDF)...
the flags. Where one of these flags is that of the European Union, the European Union flag should be flown on the immediate left of the national flag, or...
nation of Russia has designed and used various flags throughout history. Listed in this article are flags — federal, administrative, military, etc. — used...
flags that are used exclusively in Wales. Other flags used in Wales, as well as the rest of the United Kingdom can be found at list of British flags....
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