Are you talking about games that featured the serial link play (like the Armored Core games)? Would this be wireless, or would you need something like a USB cable to connect the devices?
I looked up the specs on the PSX's Communication Port and found that it had a peak baud rate of 4 Mbps. So a local WiFi connection might be able to supply data fast enough for wireless linked play. Here's the page where I found the information:http://www.absolute-playstation.com/api_faqs/faq7.htm
This would be awesome because I recently dumped all of my old Armored Core discs. They're a bit awkward to play without L2/R2 buttons, but this could make it all worth it.