AF
E654561
AF is a 16-bit register pair in the Zilog Z80 CPU that combines the accumulator (A) and the flags register (F) for arithmetic and logic operations.
All labels observed (1)
| Label | Occurrences |
|---|---|
| AF canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7304460 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: AF Context triple: [Zilog Z80, hasRegister, AF]
-
A.
AF
AF is the two-letter ISO 3166-1 alpha-2 country code assigned to Afghanistan for international standardization and referencing.
-
B.
AF
AF is the two-letter IATA airline designator assigned to Air France, the flag carrier of France.
-
C.
AAF
AAF is the common abbreviation for the Alliance of American Football, a short-lived professional American football league that operated in 2019.
-
D.
FA
FA is the governing body of association football in England, responsible for overseeing the national teams, competitions, and the rules of the game within the country.
-
E.
FA
FA is a Chilean left-wing political coalition known for uniting various progressive parties and movements to challenge the country’s traditional political blocs.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: AF Target entity description: AF is a 16-bit register pair in the Zilog Z80 CPU that combines the accumulator (A) and the flags register (F) for arithmetic and logic operations.
-
A.
AF
AF is the two-letter ISO 3166-1 alpha-2 country code assigned to Afghanistan for international standardization and referencing.
-
B.
AF
AF is the two-letter IATA airline designator assigned to Air France, the flag carrier of France.
-
C.
AAF
AAF is the common abbreviation for the Alliance of American Football, a short-lived professional American football league that operated in 2019.
-
D.
FA
FA is the governing body of association football in England, responsible for overseeing the national teams, competitions, and the rules of the game within the country.
-
E.
FA
FA is a Chilean left-wing political coalition known for uniting various progressive parties and movements to challenge the country’s traditional political blocs.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
CPU register pair
ⓘ
Z80 register pair ⓘ |
| alternateRegisterPair | AF' ⓘ |
| architecture | Zilog Z80 ⓘ |
| associatedWith | ALU ⓘ |
| bitWidth | 16-bit ⓘ |
| canBeExchangedWith | AF' ⓘ |
| canBePoppedFromStack | yes ⓘ |
| canBePushedToStack | yes ⓘ |
| componentRegister |
A
ⓘ
F ⓘ |
| contains |
accumulator A
ⓘ
flags register F ⓘ |
| cpuFamily |
Z80
ⓘ
linked to:
Zilog Z80
|
| flagRegisterContains |
add/subtract flag
ⓘ
carry flag ⓘ half-carry flag ⓘ parity/overflow flag ⓘ sign flag ⓘ zero flag ⓘ |
| highByte | A ⓘ |
| introducedBy | Zilog ⓘ |
| lowByte | F ⓘ |
| partOf | Zilog Z80 ⓘ |
| purpose |
arithmetic operations
ⓘ
logic operations ⓘ |
| registerClass |
accumulator and flags pair
ⓘ
general-purpose register pair ⓘ |
| stores |
condition flags in F
ⓘ
operation results in A ⓘ |
| supportsInstructionSet |
Z80 instruction set
ⓘ
linked to:
Zilog Z80
|
| usedByInstruction |
ADC A,r
ⓘ
ADD A,r ⓘ AND r ⓘ CCF ⓘ CP r ⓘ CPL ⓘ DAA ⓘ OR r ⓘ SBC A,r ⓘ SCF ⓘ SUB r ⓘ XOR r ⓘ |
| usedFor |
arithmetic and logic unit operations
ⓘ
status flag handling ⓘ |
| usedIn | 8-bit microprocessor systems ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: AF Description of subject: AF is a 16-bit register pair in the Zilog Z80 CPU that combines the accumulator (A) and the flags register (F) for arithmetic and logic operations.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.