Product Manual
14 20 BIOS Comm I/O Same as Real Mode
15 21 BIOS Cassette Tape I/O Same as Real Mode
16 22 BIOS Keyboard I/O Same as Real Mode
17 23 BIOS Printer I/O Same as Real Mode
18 24 ROM BASIC Entry Point Same as Real Mode
19 25 Bootstrap Loader Same as Real Mode
1A 26 Time of Day Same as Real Mode
1B 27 Control/Break Handler Same as Real Mode
1C 28 Timer Control Same as Real Mode
1D 29 Video Parameter Table Pntr Same as Real Mode
1E 30 Floppy Parm Table Pntr Same as Real Mode
1F 31 Video Graphics Table Pntr Same as Real Mode
20 32 DOS Terminate Program Same as Real Mode
21 33 DOS Function Entry Point Same as Real Mode
22 34 DOS Terminate Handler Same as Real Mode
23 35 DOS Control/Break Handler Same as Real Mode
24 36 DOS Critical Error Handler Same as Real Mode
25 37 DOS Absolute Disk Read Same as Real Mode
26 38 DOS Absolute Disk Write Same as Real Mode
27 39 DOS Program Terminate,
Stay Resident
Same as Real Mode
28 40 DOS Keyboard Idle Loop Same as Real Mode
29 41 DOS CON Dev. Raw Output Same as Real Mode
2A 42 DOS 3.x+ Network Comm Same as Real Mode
2B 43 DOS Internal Use Same as Real Mode
2C 44 DOS Internal Use Same as Real Mode
2D 45 DOS Internal Use Same as Real Mode
2E 46 DOS Internal Use Same as Real Mode
2F 47 DOS Print Spooler Driver Same as Real Mode
30-60 48-96 Reserved by DOS Same as Real Mode
61-66 97-102 User Available Same as Real Mode
Table 2-4 PC Interrupt Vector Table (Continued)
INTERRUPT NO. IRQ
LINE REAL MODE PROTECTED MODE
HEX DEC

产品手册
14 20 BIOS通信I/O与实模式相同
15 21 BIOS盒式磁带I/O与实模式相同
16 22 BIOS键盘I/O与实模式相同
17 23 BIOS打印机I/O与实模式相同
18 24 ROM基本入口点与实际模式相同
19 25引导加载程序与实际模式相同
1A中的26个时间与实际模式相同
1B 27控制/中断处理程序与实际模式相同
1C 28定时器控制与实模式相同
1D 29视频参数表Pntr与实际模式相同
1E 30软盘参数表Pntr与实模式相同
1F 31视频图形表Pntr与实际模式相同
20 32 DOS终止程序与实际模式相同
21 33 DOS功能入口点与实模式相同
22 34 DOS终止处理程序与实际模式相同
23 35 DOS控制/中断处理程序与实模式相同
24 36 DOS关键错误处理程序与实模式相同
25 37 DOS磁盘读取与实模式相同
26 38 DOS磁盘写入与实模式相同
27 39 DOS程序终止，
常驻
和真实模式一样
28 40 DOS键盘空闲循环与实际模式相同
29 41 DOS CON Dev原始输出与实模式相同
2A 42 DOS 3。x+网络通信与实模式相同
2B 43 DOS内部使用与实模式相同
2C 44 DOS内部使用与实模式相同
2D 45 DOS内部使用与实模式相同
2E 46 DOS内部使用与实际模式相同
2F 47 DOS后台打印程序驱动程序与实模式相同
30-60 48-96由DOS保留，与实模式相同
61-66 97-102用户可用与实际模式相同
表2-4 PC中断向量表（续）
中断号IRQ
线路实模式保护模式
十六进制十二进制