I added FAT file system for the SD card and now I'm able to exchange files with a PC.
When Lion computer boots it searches the sd card for a file called boot.bin and executes it.
Currently the boot.bin file in my sd card is the Tiny Basic version for Lion.
Function SDINIT mounts a new (changed) sdcard and returns 256 on success.
I added the following command in tbasic LOAD, SAVE, DIR, DELETE, LCODE, SCODE so that I can open and save basic and binary code.
The Lion partition should be FAT16, 31MB max, 512bytes/sec
