硬件中断由外部设备触发,用于处理设备请求(如键盘输入);软件中断由程序指令引发,用于系统调用(如INT指令)。应用不同,硬件中断处理实时事件,软件中断实现内核服务。 1. **中断来源**:硬件中断由外部设备(如键盘、磁盘)通过物理信号触发;软件中断由程序执行特定指令(例如INT、SWI)主动发起。2. **触发机制**:硬件
What is hardware interrupt? What is software interrupt? What is exception? Please tell me all you know about interrupt.相关知识点: 试题来源: 解析 硬件中断是由外部设备触发的信号,用于请求处理器处理事件;软件中断是通过指令主动引发的中断,用于系统调用等;异常是处理器执行指令时遇到的意外错误或特殊情况(...
The remainder can be used for hardware or software interrupts. The interrupt type number determines its place within the interrupt vector table and its priority (with the exception of the NMI interrupt (2), but has the highest priority due to its direct connection with the CPU). Microprocessor...
When implementing any of the DMA request lines (sys_ndmareq[3..0]) on the DM3730, does this interrupt go directly to the DMA controller to process the next frame of data (entirely within hardware) or does it interrupt software? Then software intervenes by setting registers in the DM...
Concepts well known in software engineering are reiterated, but they are emphasized in relation to the hardware-software interface. The concept of an interrupt service routine is shown to be at variance with the requirements of secure program design. The alternative concept of switching to another ...
请输入您的回答...简述hardware interrupt和software中断的区别，简述其应用 不
Enable or disable interrupt preemption. Use theHardware Mappingtool to configure the desired event or interrupt. TheHardware Mappingtool allows you to configure the hardware interrupts tasks for the selected hardware board. With this tool, you can map the tasks in your software model to the availab...
You will often find software interrupts used in x86 BIOS routines and they make it easier to update the software since the interrupt routine will always be in the located in the same place e.g. for plotting a pixel a software interrupt is executed and the actual code that plots the pixel...
Finally, one of the easiest ways to synchronize a task to an ISR is to use what’s known as a “deferred interrupt.” Here, we defer processing the data captured inside the ISR to another task. Whenever such data has been captured, we can give a semaphore (or send atask notification)...
Many function modules require special parameterization software which is supplied with the function module with the corresponding documentation. Hardware interrupt-triggering events can only be configured together with STEP 7 and the parameterization software. ...