isr

问题 I'm working with interrupts and I'm facing this problem while running my code: DATA SEGMENT INPUTV DW 0035H, 0855H, 2011H, 1359H OUTPUTV DB 4 DUP(0) DIVIDER DB 09 ERROR_FLAG DB 0 DATA ENDS _STACK SEGMENT STACK DW 100 DUP(0) TOP_STACK LABEL WORD _STACK ENDS CODE SEGMENT ASSUME CS:CODE, DS:DATA, SS:_STACK MAIN: MOV AX, _STACK MOV SS, AX MOV SP, OFFSET TOP_STACK MOV AX, DATA MOV DS, AX MOV AX, 0000H MOV ES, AX MOV WORD PTR ES:0002, SEG INT_PROC ;PUSHING CS TO STACK MOV WORD PTR ES:0000, OFFSET

问题 I'm working with interrupts and I'm facing this problem while running my code: DATA SEGMENT INPUTV DW 0035H, 0855H, 2011H, 1359H OUTPUTV DB 4 DUP(0) DIVIDER DB 09 ERROR_FLAG DB 0 DATA ENDS _STACK SEGMENT STACK DW 100 DUP(0) TOP_STACK LABEL WORD _STACK ENDS CODE SEGMENT ASSUME CS:CODE, DS:DATA, SS:_STACK MAIN: MOV AX, _STACK MOV SS, AX MOV SP, OFFSET TOP_STACK MOV AX, DATA MOV DS, AX MOV AX, 0000H MOV ES, AX MOV WORD PTR ES:0002, SEG INT_PROC ;PUSHING CS TO STACK MOV WORD PTR ES:0000, OFFSET

来源： https://stackoverflow.com/questions/29401426/is-there-a-difference-between-an-isr-and-an-interrupt-handler

来源： https://stackoverflow.com/questions/29401426/is-there-a-difference-between-an-isr-and-an-interrupt-handler

问题 Can breakpoints be used in interrupt service routines (ISRs)? 回答1: Yes - in an emulator . Otherwise, no. It's difficult to pull off, and a bad idea in any case. ISRs are (usually) supposed to work with the hardware, and hardware can easily behave very differently when you leave a gap of half a second between each instruction. Set up some sort of logging system instead. ISRs also ungracefully "steal" the CPU from other processes, so many operating systems recommend keeping your ISRs extremely

问题 Based on various references, my subjective definition of signals in Linux is "The triggers that are used to notify the processes about an occurrence of a specific event.Event here may refer to a software exception.Additionally signals may also be used for IPC mechanisms." The questions I have are I presume only exceptions (software interrupts) are notified via signals.What about the case of hardware interrupts. What are the various sources of the signal? To me it looks like kernel is always

问题 I want to know the difference between FIQ and IRQ interrupt system in any microprocessor, e.g: ARM926EJ. 回答1: A feature of modern ARM CPUs (and some others). From the patent: A method of performing a fast interrupt in a digital data processor having the capability of handling more than one interrupt is provided. When a fast interrupt request is received a flag is set and the program counter and condition code registers are stored on a stack. At the end of the interrupt servicing routine the

问题 I need to generate a far jump instruction to jump to another ISR(Interrupt Service Routine). I'm developing a 32-bit FreeDOS application. After reading OW manuals(cguide.pdf and clr.pdf), I figured out two ways that compiled successfully w/o any warning or error . /* Code Snippet #1 */ #pragma aux old08 aborts ; void (__interrupt __far *old08)(void); // function pointer declaration void __interrupt __far new08(void) { /* Do some processing here ... */ (*old08)(); /* OW will now generate a

问题 Consider the following sequence of micro-operations. MBR ← PC MAR ← X PC ← Y Memory ← MBR Which one of the following is a possible operation performed by this sequence? Instruction fetch Operand fetch Conditional branch Initiation of interrupt service Answer is option (4). My attempt : Instruction fetch : Fetch instruction: Read instruction code from address in PC and place in IR. ( IR ← Memory[PC] ) Operand fetch : Fetch operands from memory if necessary: If any operands are memory addresses

问题 Consider the following sequence of micro-operations. MBR ← PC MAR ← X PC ← Y Memory ← MBR Which one of the following is a possible operation performed by this sequence? Instruction fetch Operand fetch Conditional branch Initiation of interrupt service Answer is option (4). My attempt : Instruction fetch : Fetch instruction: Read instruction code from address in PC and place in IR. ( IR ← Memory[PC] ) Operand fetch : Fetch operands from memory if necessary: If any operands are memory addresses