| 中断 |
描述 |
| INT 00h |
CPU: 除零错,或商不合法时触发 |
| INT 01h |
CPU: 单步陷阱,TF标记为打开状态时,每条指令执行后触发 |
| INT 02h |
CPU: 非可屏蔽中断, 如 系统自举 时发生内存错误触发。 |
| INT 03h |
CPU: 第一个未定义的中断向量, 约定俗成仅用于调试程序 |
| INT 04h |
CPU: 算数溢出。通常由INTO指令在置溢出位时触发。 |
| INT 05h |
在按下Shift-PrintScreen或BOUND指令检测到范围异常时触发。 |
| INT 06h |
CPU: Called when the Undefined Opcode (invalid instruction) exception occurs. Usually installed by the operating system. |
| INT 07h |
CPU: Called when an attempt was made to execute a floating-point instruction and no numeric coprocessor was available. |
| INT 08h |
IRQ0: Implemented by the system timing component; called 18.2 times per second (once every 55 ms) by thePIC |
| INT 09h |
IRQ1: Called after every key press and release (as well as during the time when a key is being held) |
| INT 0Ah |
IRQ2: |
| INT 0Bh |
IRQ3: Called by serial ports 2 and 4 (COM2/4) when in need of attention |
| INT 0Ch |
IRQ4: Called by serial ports 1 and 3 (COM1/3) when in need of attention |
| INT 0Dh |
IRQ5: Called by hard disk controller (PC/XT) or 2nd parallel port LPT2 (AT) when in need of attention |
| INT 0Eh |
IRQ6: Called by floppy disk controller when in need of attention |
| INT 0Fh |
IRQ7: Called by 1st parallel port LPT1 (printer) when in need of attention |
| INT 10h |
显示服务 - 由BIOS或操作系统设定以供软件调用
| AH=00h |
设定显示模式 |
| AH=01h |
设定游标形态 |
| AH=02h |
设定游标位置 |
| AH=03h |
获取游标位置与形态 |
| AH=04h |
获取光笔位置 |
| AH=05h |
设定显示页 |
| AH=06h |
清除或卷轴画面(上) |
| AH=07h |
清除或卷轴画面(下) |
| AH=08h |
读取游标处字符与属性 |
| AH=09h |
更改游标处字符与属性 |
| AH=0Ah |
更改游标处字符 |
| AH=0Bh |
设定边界颜色 |
| AH=0Eh |
在TTY模式下写字符 |
| AH=0Fh |
取得目前显示模式 |
| AH=13h |
写字符串 |
|
| INT 11h |
Installed by the BIOS; returns equipment list |
| INT 12h |
Installed by the BIOS or operating system; returns Conventional Memory Size |
| INT 13h |
低阶磁盘服务; installed by the BIOS or operating system; called by software programs
| AH=00h |
Reset Disk Drives |
| AH=01h |
Check Drive Status |
| AH=02h |
Read Sectors From Drive |
| AH=03h |
Write Sectors To Drive |
| AH=04h |
Verifies Sectors On Drive |
| AH=05h |
Format Track On Drive |
| AH=08h |
Get Drive Parameters |
| AH=09h |
Init Fixed Drive Parameters |
| AH=0Ch |
Seek To Specified Track |
| AH=0Dh |
Reset Fixed Disk Controller |
| AH=15h |
Get Drive Type |
| AH=16h |
Get Floppy Drive Media Change Status |
|
| INT 14h |
Routines for communicating via the serial port. Used by software programs.
| AH=00h |
Serial Port Initialization |
| AH=01h |
Transmit Character |
| AH=02h |
Receive Character |
| AH=03h |
Status |
|
| INT 15h |
Miscellaneous (System services support routines)
| AH=4FH |
Keyboard Intercept |
| AH=83H |
Event Wait |
| AH=84H |
Read Joystick |
| AH=85H |
Sysreq Key Callout |
| AH=86H |
Wait |
| AH=87H |
Move Block |
| AH=88H |
Get Extended Memory Size |
| AH=C0H |
Get System Parameters |
| AH=C1H |
Get Extended BIOS Data Area Segment |
| AH=C2H |
Pointing Device Functions |
| AH=E8h, AL=01h (AX = E801h) |
Get Extended Memory Size(Newer function, since 1994). Gives results for memory size above 64 Mb. |
| AH=E8h, AL=20h (AX = E820h) |
Query System Address Map. The information returned from e820 supersedes what is returned from the older AX=E801h and AH=88h interfaces. |
|
| INT 16h |
Implemented by the BIOS or operating system. Provides routines to be called by software programs which communicate with the keyboard.
| AH=00h |
Read Character |
| AH=01h |
Read Input Status |
| AH=02h |
Read Keyboard Shift Status |
| AH=10h |
Read Character Extended |
| AH=11h |
Read Input Status Extended |
| AH=12h |
Read Keyboard Shift Status Extended |
|
| INT 17h |
Print Services - used by software programs to communicate with the printer
| AH=00h |
Print Character to Printer |
| AH=01h |
Initialize Printer |
| AH=02h |
Check Printer Status |
|
| INT 18h |
Execute Cassette BASIC: True IBM computers contain BASIC in the ROM to be interpreted and executed by this routine in the event of a boot failure (called by the BIOS) |
| INT 19h |
After POST this interrupt is used by BIOS to load the operating system. |
| INT 1Ah |
即时的时钟（RTC）服务 - called by software programs to communicate with the RTC
| AH=00h |
读取 RTC |
| AH=01h |
设定 RTC |
| AH=02h |
读取 RTC 时间 |
| AH=03h |
设定 RTC 时间 |
| AH=04h |
读取 RTC 日期 |
| AH=05h |
设定 RTC 日期 |
| AH=06h |
设定 RTC Alarm |
| AH=07h |
Reset RTC Alarm |
|
| INT 1Bh |
Installed by the operating system; automatically called by INT 9 when Ctrl-Break has been pressed |
| INT 1Ch |
Called automatically by INT 08; available for use by software programs when a routine needs to be executed regularly |
| INT 1Dh |
Not to be called; simply a pointer to the VPT (Video Parameter Table), which contains data on video modes |
| INT 1Eh |
Not to be called; simply a pointer to the DPT (Diskette Parameter Table), containing a variety of information concerning the diskette drives |
| INT 1Fh |
Not to be called; simply a pointer to the VGCT (Video Graphics Character Table), which contains the data for ASCII characters 80h to FFh |
| INT 41h |
Address pointer: FDPT = Fixed Disk Parameter Table (1st hard drive) |
| INT 46h |
Address pointer: FDPT = Fixed Disk Parameter Table (2nd hard drive) |
| INT 4Ah |
Called by RTC for alarm |
| INT 70h |
IRQ8: 由 RTC 呼叫 |
| INT 74h |
IRQ12: 由鼠标呼叫 |
| INT 75h |
IRQ13: Called by math coprocessor |
| INT 76h |
IRQ14: 由第一个 IDE 控制器所呼叫 |
| INT 77h |
IRQ15: 由第二个 IDE 控制器所呼叫 |
