Lesson plan
Programmer's key
computer (on the left, above the circular symbol) The programmer's key, or interrupt button, is a button or switch on Classic Mac OS-era Macintosh systems, which jumps to a machine code monitor. The symbol on the button is ⎉: . On most 68000 family based Macintosh computers, an interrupt request can also be sent by holding down the command key and pressing the power key on the keyboard. This effect is also simulated by the 68000 environment of the Mac OS nanokernel on PowerPC machines and the Classic environment. Pressing the interrupt button during startup crashes the system and displays the Sad Mac. A plastic insert came with Macintosh 128K, Macintosh 512K, Macintosh Plus, and Macintosh SE computers that could be attached to the exterior of the case and was used to press an interrupt button located on the motherboard. Modern Mac hardware no longer includes the interrupt button, as the macOS operating system has integrated debugging options. In addition, macOS's protected memory blocks direct patching of system memory (in order to better secure the system).
Article summary
computer (on the left, above the circular symbol) The programmer's key, or interrupt button, is a button or switch on Classic Mac OS-era Macintosh systems, which jumps to a machine code monitor. The symbol on the button is ⎉: . On most 68000 family based Macintosh computers, an interrupt request can also be sent by holding down the command key and pressing the power key on the keyboard. This effect is also simulated by the 68000 environment of the Mac OS nanokernel on PowerPC machines and the Classic environment. Pressing the interrupt button during startup crashes the system and displays the Sad Mac. A plastic insert came with Macintosh 128K, Macintosh 512K, Macintosh Plus, and Macintosh SE computers that could be attached to the exterior of the case and was used to press an interrupt button located on the motherboard. Modern Mac hardware no longer includes the interrupt button, as the macOS operating system has integrated debugging options. In addition, macOS's protected memory blocks direct patching of system memory (in order to better secure the system).
Key claims
No claims recorded.
Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
Bibliography
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Key claims and bibliography are generated from the same tracked claims and sources as the article page.