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PSXDEV supports currently only the PC commslink ISA board for driver communication. The Xploder/Xplorer cartridge uses a simple PC-style parallel port for the communication. I bought one and wrote some small tests, with the result that the parallel port communication is a bit different from the ISA. I did I/O port snooping by using linux DOSEMU, debugging the ports 0x320..0x322 and used the original caetla tools for DOS. It seems that in the parallel communication the normal caetla handshake (as described in CAEPR.TXT) is split up to save I/O port accesses. Since my driver code and all utilties and libraries are built following the CAEPR.TXT guidelines everything must be rewritten or at least adopted. I don't have the time for that, feel free to do it yourself (isn't that hard)!
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