Protected and 64-bit memory
• Protected Memory allows the system to isolate processes in an area of its memory reserved for that purpose. This denies other processes access to that portion of the memory if they do not have the required credentials and authorisations.
• 64-bit memory addressing permits systems that are 64-bit enabled, with 64-bit processors, to address over 4GB space for memory. Until recently, most consumer computer systems were 32-bit and could not allocate more than 4GB for memory.
Mac OS X supports five application environments. They are:
• Cocoa, the innate OS X environment.
• Carbon, native OS 9 environment that Mac OS X also supports.
• Java, an environment developed by Sun Microsystems. Java is architecture independent.
• BSD, the Command Line Interface of Mac OS X.
• X11, a cross platform visual environment for UNIX applications.
Benefits of code signing:
• Code signing is the practice of placing a digital signature on a section of code. It allows the system to recognise when an application code has been modified and to authenticate software and resources.
• The system can then terminate processes that have been tampered with, protecting itself from malware or a virus-induced crash.
Rosetta is software that enables the translation of applications designed for systems based on Power PC Mac OS X, allowing them to operate on Mac OS X systems based on Intel. Rosetta does not support these items:
• Applications designed to run on the Classic Environment.
• Java applications created using Java Native Interface (JNI) libraries.
• Java elements of applications that Rosetta can otherwise translate. Applets in web browsers are an example.
• Applications built for Operating Systems older than Mac OS X.
• Screen savers designed for Power PC.
• Software that brings up Power PC preference Panes in the system Preferences.
• Applications for which Power PC G5 processors are requisite.
• Any application that removes Power PC Kernel Extensions.
• Plugins whose tie-in software is Intel Native, even if the plugins were designed for Power PC.
Several methods allow you to ascertain what type an application is.
• Open the Finder, choose an item and select “Get Info” from the file menu.
• Alternatively, you can open the Inspector window.
• You can also get this information from the Application section of the System Profiler, in the Apple menu.
You can also find out which applications are installed on the system by perusing the Application section of the System Profiler.
Mac OS X accessibility features.
• The Universal Access system preferences pane allows management of accessibility features.
• Included in the accessibility features are options to assist user who have difficulty seeing, hearing, utilizing the keyboard, operating a mouse or track pad.
This is the directory for Universal Access preference files: Library/Preferences/com.apple.universalaccess.plist
• Protected Memory allows the system to isolate processes in an area of its memory reserved for that purpose. This denies other processes access to that portion of the memory if they do not have the required credentials and authorisations.
• 64-bit memory addressing permits systems that are 64-bit enabled, with 64-bit processors, to address over 4GB space for memory. Until recently, most consumer computer systems were 32-bit and could not allocate more than 4GB for memory.
Mac OS X supports five application environments. They are:
• Cocoa, the innate OS X environment.
• Carbon, native OS 9 environment that Mac OS X also supports.
• Java, an environment developed by Sun Microsystems. Java is architecture independent.
• BSD, the Command Line Interface of Mac OS X.
• X11, a cross platform visual environment for UNIX applications.
Benefits of code signing:
• Code signing is the practice of placing a digital signature on a section of code. It allows the system to recognise when an application code has been modified and to authenticate software and resources.
• The system can then terminate processes that have been tampered with, protecting itself from malware or a virus-induced crash.
Rosetta is software that enables the translation of applications designed for systems based on Power PC Mac OS X, allowing them to operate on Mac OS X systems based on Intel. Rosetta does not support these items:
• Applications designed to run on the Classic Environment.
• Java applications created using Java Native Interface (JNI) libraries.
• Java elements of applications that Rosetta can otherwise translate. Applets in web browsers are an example.
• Applications built for Operating Systems older than Mac OS X.
• Screen savers designed for Power PC.
• Software that brings up Power PC preference Panes in the system Preferences.
• Applications for which Power PC G5 processors are requisite.
• Any application that removes Power PC Kernel Extensions.
• Plugins whose tie-in software is Intel Native, even if the plugins were designed for Power PC.
Several methods allow you to ascertain what type an application is.
• Open the Finder, choose an item and select “Get Info” from the file menu.
• Alternatively, you can open the Inspector window.
• You can also get this information from the Application section of the System Profiler, in the Apple menu.
You can also find out which applications are installed on the system by perusing the Application section of the System Profiler.
Mac OS X accessibility features.
• The Universal Access system preferences pane allows management of accessibility features.
• Included in the accessibility features are options to assist user who have difficulty seeing, hearing, utilizing the keyboard, operating a mouse or track pad.
This is the directory for Universal Access preference files: Library/Preferences/com.apple.universalaccess.plist
For Mac & PC Support in London
Call 020 7582 9999 or contact AppleMac Support London, Macintosh SupportLondon.
