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Create an object at a given address: Difference between revisions
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{{task|Basic Data Operations}}
{{basic data operation}}
{{omit from|Modula-2}}▼
In systems programing it is sometimes required to place language objects at specific memory locations, like I/O registers, hardware interrupt vectors etc.
;Task:
Show how language objects can be allocated at a specific machine addresses.
Since most [[OS]]es prohibit access to the physical memory if it is not mapped by the application, as an example, rather than a physical address, take the address of some existing object (using suitable [[Address Operations|address operations]] if necessary).
For example:
▲{{omit from|Modula-2}}
::* create an integer object
::* print the machine address of the object
::* take the address of the object and create another integer object at this address
::* print the value of this object to verify that it is same as one of the origin
::* change the value of the origin and verify it again
<br><br>
=={{Header|6502 Assembly}}==
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