source type (c)
    "ata.c",
    "ciacore.c",
    "ciatimer.c",
    "cs8900.c",
    "flash040core.c",
    "fmopl.c",
    "mc6821core.c",
    "riotcore.c",
    "ser-eeprom.c",
    "spi-sdcard.c",
    "t6721.c",
    "tpicore.c",
    "viacore.c"
