Summary

Summary 6809 Motorola Processor

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Course
CPS310 (CPS310)

Institution
Ryerson University (Ru )

In this note I have explained how to assemble and how to disassemble 6809 Motorola. In other words, how to convert machine code to binary code and how to covert binary/hexadecimal number to machine code. With using all the required tables

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Uploaded on March 30, 2023
Number of pages 7
Written in 2022/2023
Type Summary

6809motorola
6809assembly
6809disassembly
6809binary
6809hexadecimal
6809
6809tables
6809program
load
store
addressing mode

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objective first step find theaddressing
made
we are
trying to convertAssembly process to the machinecode
O
AD CA spitegadecimal
ex Immediate

the code of instruction LI
since we don'thave
Y I
V b we
don't go to and since
ftp.CZ.cz wedon'thavebranch wedon't go
For indexedregister
to C4

Because theaddressing is immediate weputthevalueright after
the op ale 89 2 t

and wehavethe effective
address
Sta 0008 8
ex
the addresing made is extended effectiveaddress

e the opcode is B 7
since there is no X V S we
Y nobranch we ignoreCG
don't go to G Cz Cz Since there is

B does

, ex LAB Xt o Itis indexed addressing made
Findin CB 80

r a
EG 80 CinHexadecimal Is tooo oooo

made
eyst lSFF.X It is indexed addressing

I since Bis 8 bitregister weonlyneedFt
p f if it was D or X Y or any tr bit register
E 8s me'dneed FEEF

If we alsoneed to mention the offset

TOtag is not effective because it is indirect
MCooted is effective

register put a bit
If You are dealing with
fit
mediate
bit register put a bits

Firstgoto es
exonygooHexadecimal weforgetabout 4 cuz
thereis no Branch instruction
Sc 0040
meshow in 4bits because wehaeX which is a tobit
register

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