Thanks a lot. Will try. I was trying to make HostFS working from PalmOS side of gvm but got nowhere. As default, HostControl API is implemented but the only interesting method supported is HostTraceOutput, The HostF* API which is used by HostFS filesystem library to implement virtual card did not work for me (EDIT: see below). I tried also various hostfs.prc libraries for both simulator and emulator but with no success.

Did not know about gras-client and GRAS server feature. Many thanks.

EDIT: If you want, check output of HostFSTest.prc inside HostFSTest.zip with card enabled. See the code in testHostFS() in src/AppMain.c. Basically all I got is Hello World from HostTraceOutput, nothing more. It did a bit more in Garnet 5.x Simulator.