Motorola 6809

E848831

The Motorola 6809 is an 8-bit microprocessor introduced in the late 1970s, notable for its advanced instruction set, powerful addressing modes, and use in early home computers and embedded systems.

All labels observed (1)

Label Occurrences
Motorola 6809 canonical 5

How this entity was disambiguated

Statements (51)

Predicate Object
instanceOf 8-bit microprocessor
microprocessor
addressBusWidth 16-bit
architecture CISC
compatibleWith Motorola 6800 source code at assembly level
dataBusWidth 8-bit
hasFeature 16-bit accumulator D formed from A and B
fast interrupt FIRQ
maskable interrupt IRQ
non-maskable interrupt NMI
orthogonal instruction set
position-independent code support
reentrant code support
two stack pointers
hasRegister A accumulator
B accumulator
CC condition code register
D accumulator
DP direct page register
PC program counter
S hardware stack pointer
U stack pointer
X index register
Y index register
instructionSetSize approximately 59 basic instructions
introducedInDecade 1970s
introducedInYear 1978
manufacturer Motorola
notableFor advanced addressing modes for an 8-bit CPU
use in arcade and gaming systems
use in early home computers
predecessor Motorola 6800
successor Hitachi 6309
supportsAddressingMode auto-decrement addressing
auto-increment addressing
direct addressing
extended addressing
immediate addressing
indexed addressing
indirect addressing
relative addressing
stack-relative addressing
usedIn Dragon 32
Dragon 64
TRS-80 Color Computer
linked to: Tandy TRS-80

Thomson MO5
Thomson TO7/70
Vectrex game console
embedded systems
industrial control systems
wordSize 8-bit

How these facts were elicited

Referenced by (5)

Full triples — surface form annotated when it differs from this entity's canonical label.

Motorola 6800 influenced Motorola 6809
subject linked to: Motorola 6800 microprocessor
Motorola 6800 successor Motorola 6809
subject linked to: Motorola 6800 microprocessor
OS-9 supportsPlatform Motorola 6809
Fujitsu FM-7 cpu Motorola 6809
Motorola 6802 successor Motorola 6809