bios

问题 If I create an ASP.net page, am I able to get the current users CPUID and BIOS serial number? Or is that not allowed because of security? I currently have a Visual Basic.net application that gets these values, I am just wondering if I can do the same thing on a web page. 回答1: In a nut shell, no you cannot get this information using just a regular html & JavaScript web page. That's not however, to say that it's not possible. If your client computer has Java, Flash or Silver-light installed

问题 What is the order int 13h with ah=02h will read 19 sectors starting at (C, H, S) = (0, 0, 1) provided a (floppy) disk geometry of 2 heads, 18 sectors per track and 80 tracks per side. Or, more generally, what happens when it reaches the end of track 0, head 0? Does it go to track 1 or head 1? Does it even work properly in this case? EDIT: Wait.. is this actually like hours, minutes, seconds? If we reach the end of the track (S is greater than 18), then H is increased? 回答1: Modern BIOSes

问题 What is the order int 13h with ah=02h will read 19 sectors starting at (C, H, S) = (0, 0, 1) provided a (floppy) disk geometry of 2 heads, 18 sectors per track and 80 tracks per side. Or, more generally, what happens when it reaches the end of track 0, head 0? Does it go to track 1 or head 1? Does it even work properly in this case? EDIT: Wait.. is this actually like hours, minutes, seconds? If we reach the end of the track (S is greater than 18), then H is increased? 回答1: Modern BIOSes

问题 I write some code to make my own operating system and study x86 assembly language, too. While studying x86 assembly language, I start wondering about interrupt. Look at below assembly code: mov ah, 2 mov dl, 'A' int 0x21 This code prints 'A' to the screen. it is for MS-DOS. mov eax, 1 mov ebx, 0 int 0x80 This code makes program to exit. it is for Linux. The last one: mov ah, 2 mov al, 1 mov ch, 0 mov cl, 2 mov dh, 0 mov dl, 0 int 0x13 I wrote this code to copy kernel code from disk. This code

问题 I write some code to make my own operating system and study x86 assembly language, too. While studying x86 assembly language, I start wondering about interrupt. Look at below assembly code: mov ah, 2 mov dl, 'A' int 0x21 This code prints 'A' to the screen. it is for MS-DOS. mov eax, 1 mov ebx, 0 int 0x80 This code makes program to exit. it is for Linux. The last one: mov ah, 2 mov al, 1 mov ch, 0 mov cl, 2 mov dh, 0 mov dl, 0 int 0x13 I wrote this code to copy kernel code from disk. This code

来源： https://stackoverflow.com/questions/27109159/using-bios-functions-through-c

来源： https://stackoverflow.com/questions/43359327/default-registers-and-segments-value-on-booting-x86-machine

来源： https://stackoverflow.com/questions/62513643/qemu-gdb-does-not-show-instructions-of-firmware

来源： https://stackoverflow.com/questions/62513643/qemu-gdb-does-not-show-instructions-of-firmware

来源： https://stackoverflow.com/questions/62513643/qemu-gdb-does-not-show-instructions-of-firmware