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据HCN激光偏振干涉仪实验研究的需要,原来研制了一种FRA信号检测采集仪,此仪器的采集软件(名叫fra.exe)是在DOS环境下用汇编语言编制。随着实验的进行,我们发现该软件的界面不够友好、图形不可靠、不能打印等缺点。 为了实现DOS应用程度的多任务,微软公司开发了一个用于程序交互的可扩充单元,称之为DPMI(DOS保护模式接口)。依据DPMI的规格说明,由于DOS访问低于1 M的内存空间,使用“段地址:偏移”访问内存,故在Windows 3.0后的保护模式中,Windows下的DOS环境亦称为虚拟8086模式。而Win 95并不支持DOS虚拟模式下的中断调
According to the needs of HCN laser polarization interferometer experimental research, originally developed a FRA signal acquisition detector, the instrument acquisition software (called fra.exe) is compiled in DOS environment with assembly language. With the experiment, we found that the software interface is not friendly enough, the graphics are not reliable, can not print shortcomings. To achieve multitasking for DOS applications, Microsoft has developed an extensible unit for program interaction called DPMI (DOS Protected Mode Interface). According to the DPMI specification, the DOS environment under Windows is also referred to as the virtual 8086 mode in the protected mode after Windows 3.0 as DOS accesses memory below 1 Mbytes and uses “segment address: offset” to access memory. Win 95 does not support DOS interrupt mode in virtual mode