BIOS中断
BIOS中断
实模式下，调用中断采用的是BIOS中断方式。
BIOS中断就不介绍了:BIOS中断
BIOS中断大全
查询相应的中断API可以根据BIOS中断大全：BIOS中断大全
BIOS的中断向量表
中断向量表位置
中断向量表位于BIOS的 0x0000 - 0x03FF 地方，大小为 1k。
| 中断号 | 说明: int 中断号 | |
|---|---|---|
| 0x00 | DIVIDE ERROR | |
| 0x01 | SINGLE STEP | |
| 0x02 | NON-MASKABLE INTERRUPT | |
| 0x03 | BREAKPOINT | |
| 0x04 | INT0 DETECTED OVERFLOW | |
| 0x05 | BOUND RANGE EXCEED | |
| 0x06 | INVALID OPCODE | |
| 0x07 | PROCESSOR EXTENSION NOT AVAILABLE | |
| 0x08 | IRQ0 | |
| 0x09 | IRQ1 | |
| 0x0a | IRQ2 | |
| 0x0b | IRQ3 | |
| 0x0c | IRQ4 | |
| 0x0d | IRQ5 | |
| 0x0e | IRQ6 | |
| 0x0e | IRQ7 | |
| 0x10 | VIDEO | 显示 |
| 0x11 | GET EQUIPMENT LIST | 设备列表 |
| 0x12 | GET MEMORY SIZE | 内存大小 |
| 0x13 | DISK | 磁盘 |
| 0x14 | SERIAL | 串行口服务 |
| 0x15 | SYSTEM | 系统 |
| 0x16 | KEYBOARD | 键盘 |
| 0x17 | PRINTER | 打印机 |
| 0x18 | CASETTE BASIC | |
| 0x19 | BOOTSTRAP LOADER | 时钟 |
| 0x1a | TIME | |
| 0x1b | KEYBOARD - CONTROL-BREAK HANDLER | |
| 0x1c | TIME - SYSTEM TIMER TICK | |
| 0x1d | SYSTEM DATA - VIDEO PARAMETER TABLES | |
| 0x1e | SYSTEM DATA - DISKETTE PARAMETERS | |
| 0x1f | SYSTEM DATA - 8x8 GRAPHICS FONT | |
| 0x70 | IRQ8 - CMOS REAL-TIME CLOCK | |
| 0x71 | IRQ9 - REDIRECTED TO INT 0A BY BIOS | |
| 0x72 | IRQ10 - RESERVED | |
| 0x73 | IRQ11 - RESERVED | |
| 0x74 | IRQ12 - POINTING DEVICE | |
| 0x75 | IRQ13 - MATH COPROCESSOR EXCEPTION | |
| 0x76 | IRQ14 - HARD DISK CONTROLLER OPERATION COMPLETE | |
| 0x77 | IRQ15 - SECONDARY IDE CONTROLLER OPERATION |