BIOS中断详解手册
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《BIOS中断详解手册》是一本深入剖析计算机基本输入输出系统（BIOS）中断机制的专业书籍，涵盖中断向量、调用方法及应用实例，适合硬件与软件开发者阅读。
INT 1A - System and Real Time Clock BIOS Services
- INT 1A,0: Read system clock counter
- INT 1A,1: Set system clock counter
- INT 1A,2: Read real time clock time (AT, PS/2)
- INT 1A,3: Set real time clock time (AT, PS/2)
- INT 1A,4: Read real time clock date (AT, PS/2)
- INT 1A,5: Set real time clock date (AT, PS/2)
- INT 1A,6: Set real time clock alarm (AT, PS/2)
- INT 1A,7: Reset real time clock alarm (PS/2)
- INT 1A,8: Set RTC activated power on mode (convertible, PS/2)
- INT 1A,9: Read RTC alarm time and status (convertible, PS/2)
- INT 1A,A: Read system day counter (PS/2)
- INT 1A,B: Set system day counter (PS/2)
- INT 1A,80: Set up sound multiplexer (PCjr only)
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