The Amiga intellectual property is fragmented between Amiga Inc. The copyrights for works created up to are owned by Cloanto. On December 29, , the AmigaOS 3. A command-line interface CLI , called AmigaShell, is also integrated into the system, though it also is entirely window-based.
The CLI and Workbench components share the same privileges. Notably, AmigaOS lacks any built-in memory protection. AmigaOS is formed from two parts, namely, a firmware component called Kickstart and a software portion usually referred to as Workbench.
Up until AmigaOS 3. However, since AmigaOS 3. Firmware updates may still be applied by patching at system boot. Kickstart is the bootstrap firmware, usually stored in ROM. Kickstart contains the code needed to boot standard Amiga hardware and many of the core components of AmigaOS. However, Kickstart provides more functionality available at boot time than would typically be expected on PC, for example, the full windowing environment. Kickstart contains many core parts of the Amiga's operating system, such as Exec , Intuition , the core of AmigaDOS and functionality to initialize Autoconfig-compliant expansion hardware.
Upon start-up or reset the Kickstart performs a number of diagnostic and system checks and then initializes the Amiga chipset and some core OS components. It will then examine connected boot devices and attempt to boot from the one with the highest boot priority. If no boot device is present a screen will be displayed asking the user to insert a boot disk, typically a floppy disk. At start-up Kickstart attempts to boot from a bootable device typically, a floppy disk or hard disk drive.
In the case of a floppy, the system reads the first two sectors of the disk the bootblock , and executes any boot instructions stored there. Any such disk, regardless of the other contents of the disk, was referred to as a 'Boot disk' or 'bootable disk'. A bootblock could be added to a blank disk by use of the install command. Some games and demos on floppy disk used custom bootblocks, which allowed them to take over the boot sequence and manage the Amiga's hardware without AmigaOS.
The bootblock became an obvious target for virus writers. Some games or demos that used a custom bootblock would not work if infected with a bootblock virus, as the code of the virus replaced the original.
The first such virus was the SCA virus. Anti-virus attempts included custom bootblocks. These amended bootblock advertised the presence of the virus checker while checking the system for tell-tale signs of memory-resident viruses and then passed control back to the system.
Unfortunately these could not be used on disks that already relied on a custom bootblock, but did alert users to potential trouble. Several of them also replicated themselves across other disks, becoming little more than viruses in their own right.
The Macintosh should have had multitasking. I can't stress enough what a big contribution it makes to the elegant design of system software. The Amiga has an excellent multitasking system, and I think it will have twice the product life of the Macintosh because of it. Exec is the multi-taskingkernel of AmigaOS.
Exec provides functionality for multi-tasking, memory allocation, interrupt handling and handling of dynamic shared libraries. It acts as a scheduler for tasks running on the system, providing pre-emptive multitasking with prioritized round-robin scheduling.
Exec also provides access to other libraries and high-level inter-process communication via message passing. Other comparable microkernels have had performance problems because of the need to copy messages between address spaces. Since the Amiga has only one address space, Exec message passing is quite efficient.
This includes file systems, file and directory manipulation, the command-line interface, file redirection, console windows, and so on.
Its interfaces offer facilities such as command redirection, piping, scripting with structured programming primitives, and a system of global and local variables. In AmigaOS 1. Interfacing with it from other languages proved a difficult and error-prone task, and the port of TRIPOS was not very efficient. From AmigaOS 2. ARP also provided one of the first standardized file requesters for the Amiga, and introduced the use of more friendly UNIX-style wildcard globbing functions in command-line parameters.
Other innovations were an improvement in the range of date formats accepted by commands and the facility to make a command resident, so that it only needs to be loaded into memory once and remains in memory to reduce the cost of loading in subsequent uses. File extensions are often used in AmigaOS, but they are not mandatory and they are not handled specially by the DOS, being instead just a conventional part of the file names.
Executable programs are recognized using a magic number. The native Amiga windowing system is called Intuition, which handles input from the keyboard and mouse and rendering of screens, windows and widgets. Prior to AmigaOS 2. Commodore also published the Amiga User Interface Style Guide , which explained how applications should be laid out for consistency. AmigaOS 3. An unusual feature of AmigaOS is the use of multiple screens shown on the same display.
Each screen may have a different video resolution or color depth. AmigaOS 2. Screens can be overlaid by dragging each up or down by their title bars.
AmigaOS 4 introduced screens that are draggable in any direction. Workbench is the native graphical file manager and desktop environment of AmigaOS. Though the term Workbench was originally used to refer to the entire operating system, with the release of AmigaOS 3. As the name suggests, the metaphor of a workbench is used, rather than that of a desktop; directories are depicted as drawers , executable files are tools , data files are projects and GUI widgets are gadgets.
In many other aspects the interface resembles Mac OS, with the main desktop showing icons of inserted disks and hard drive partitions, and a single menu bar at the top of every screen. Unlike the Macintosh mouse available at the time, the standard Amiga mouse has two buttons — the right mouse button operates the pull-down menus, with a 'release to select' mechanism.
Classic works great under WinUAE. I use it now and then, for it to really take off drivers or support for 3D are needed and a bump in available RAM. Although reading the agreement Hyperion consider this illegal use.
I could easily burn off a few through work using DVD duplicator, could have or more done in an hour. However printing boxes and manuals is a harder task but still doable.
For their main revenue stream they are making some weird choices, a lot like most Amiga companies. Oh our bad we have stumbled across something that's making money. Lets let all stock dry up and then take months if not years or at all to make more. Pages: [ 1 ] 2 Go Up. There was an error while thanking. JAmiga forum. Odyssey forum. OWB forum. Qt forum. SmartFileSystem forum. Timberwolf forum. TuneNet forum. Unsatisfactory Software forum. About Statement of Intent. Terms of Service. Help Poll HowTo.
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