Making an ISA interface is very easy and straight forward, just know small things from FPGA, and some small points about the ISA bus architecture, one can develope a simpel board for data transfer, which provides the required transfer rate. the total project I think can take less than a week.
Thanks. Can you suggest a simple enough FPGA for this purpose. Actually I have not used anyone before. But I have lots of experience in ISA bus and microcontrollers.