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Protection

Page history last edited by PBworks 16 years, 4 months ago

Protection

الحمـــاية

 

كيفية حماية المصادر التالية من برنامج المستخدم

 

CPU

prevlidge إلى timerنقوم بتغيير حالة الـ

 

Memory

prevlidge إلى  limitو الـbaseنقوم بتغيير حالة الـ

 

I/O devices

prevlidge من نوع  writeو الـreadنقوم بجعل أوامر الـ

 

 

 

ميّ العتيبي

 

المرجع

Operating System Concepts

 

 

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