This was a neat solution on the earlier Macs with their very limited amounts of RAM, but became a liability later. Earlier systems used the lower 24 bits for addressing, and the upper 8 bits for flags.
#MAC OS LIST MAC#
It also moved the Mac to true 32-bit memory addressing - necessary with the ever increasing amounts of RAM available.
![mac os list mac os list](https://qtechbabble.files.wordpress.com/2017/02/loginwindowlist.png)
System 6 consolidated the previous releases into a much more complete and stable operating system. MultiFinder had been released with earlier systems, but the 6.x systems were the first to make it official and widely used. Time was given to the background applications only when the foreground (or "running") applications gave it up ( cooperative multitasking), but in fact most of them did via a clever change on the OS's event handling. System 6 added MultiFinder, an add-on replacement for the Finder which could run several programs at once.
#MAC OS LIST SOFTWARE#
![mac os list mac os list](https://i.ytimg.com/vi/qxvyHfQe3Rc/maxresdefault.jpg)
![mac os list mac os list](https://user-images.githubusercontent.com/110813/88483154-ff327500-cf33-11ea-8d37-cda60b92818e.png)
System 3.0 introduced HFS (Hierarchical File System) which had real directories - previously the Finder created the illusion of folders on the flat file system. Early Macintosh system software Macintosh System Software 1Īll of these versions could only run one application at a time, though special application shells such as Switcher (discussed under MultiFinder) could get around this to some extent.