WDC 65C816 CPU
E1045989
The WDC 65C816 CPU is a 16-bit extension of the 6502 microprocessor family, widely known for powering systems like the Apple IIGS with enhanced memory addressing and performance capabilities.
Observed surface forms (1)
| Surface form | Occurrences |
|---|---|
| WDC 65C816 | 1 |
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
16-bit microprocessor
ⓘ
microprocessor ⓘ |
| addressBusWidth | 24-bit ⓘ |
| alsoKnownAs |
65C816
NERFINISHED
ⓘ
W65C816 NERFINISHED ⓘ |
| architectureFamily | MOS Technology 6502 NERFINISHED ⓘ |
| backwardCompatibilityGoal | support existing 6502 software ⓘ |
| clockSpeedRange | typically up to several MHz ⓘ |
| dataBusWidth | 8-bit ⓘ |
| designer | Western Design Center NERFINISHED ⓘ |
| directPageSize | 256 bytes ⓘ |
| documentationPublisher | Western Design Center NERFINISHED ⓘ |
| emulationModeAccumulatorSize | 8-bit ⓘ |
| emulationModeIndexRegisterSize | 8-bit ⓘ |
| emulationModeVectorBank | bank 0 ⓘ |
| hasDecimalMode | true ⓘ |
| instructionSetCompatibility | binary compatible with 6502 in emulation mode ⓘ |
| introduced | mid-1980s ⓘ |
| isExtensionOf | WDC 65C02 NERFINISHED ⓘ |
| longAddressWidth | 24-bit ⓘ |
| market |
embedded systems
ⓘ
personal computers (1980s) ⓘ |
| maxAddressableMemory | 16 megabytes ⓘ |
| nativeModeAccumulatorSize | 16-bit ⓘ |
| nativeModeIndexRegisterSize | 16-bit ⓘ |
| nativeModeVectorBank | bank 0 ⓘ |
| powerConsumption | lower than NMOS 6502 ⓘ |
| resetVectorLocation | bank 0, addresses FFFC–FFFD ⓘ |
| stackPage | bank 0 ⓘ |
| stackPointerWidth | 16-bit in native mode ⓘ |
| statusRegisterWidth | 8-bit ⓘ |
| supports16BitImmediateOperands | true GENERATED ⓘ |
| supportsBankSwitching | true GENERATED ⓘ |
| supportsBlockMoveInstructions | true ⓘ |
| supportsDirectPageRegister | true GENERATED ⓘ |
| supportsInterrupt |
ABORT
ⓘ
COP ⓘ IRQ ⓘ NMI ⓘ RESET ⓘ |
| supportsLongAddressing | true GENERATED ⓘ |
| supportsMode |
emulation mode
ⓘ
native mode ⓘ |
| supportsMVNInstruction | true GENERATED ⓘ |
| supportsMVPInstruction | true GENERATED ⓘ |
| supportsStackRelativeAddressing | true GENERATED ⓘ |
| technology | CMOS ⓘ |
| usedIn |
Apple IIGS
NERFINISHED
ⓘ
Atari 5200 development systems (some variants) NERFINISHED ⓘ Super Nintendo Entertainment System main CPU variant (Ricoh 5A22) NERFINISHED ⓘ |
| wordSize | 16-bit ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
WDC 65C816