这个不用我多说，大家一看文件名就知道了，这是支持64位的汇编编译器，可以在WIN7，8上运行。-This Needless to say, we see the file name to know, which is supported by a 64-bit assembler, you can WIN7, 8 runs.

64 bit jpcap.dll allow you to use jpcap on you windows7

JWasm is a Masm-compatible assembler. It supports 16-, 32- and 64-bit code, instructions up to AVX and various output formats. It s written in C.