求高人给解释一下这个文件的用途以及各行的含义
/etc/pcmcia/cis/aircard555.cis:dev_info
no_info
attr_dev_info
EEPROM 250ns, 512b
manfid 0x013f, 0x0710
funcid serial_port
vers_1 7.0, "Sierra Wireless", "AirCard 555", "A555", "Rev 1"
config base 0x0700 mask 0x0073 last_index 0x03
cftable_entry 0x20
io 0x03f8-0x03ff
irq mask 0x3fbc
cftable_entry 0x21
io 0x02f8-0x02ff
cftable_entry 0x22
io 0x03e8-0x03ef
cftable_entry 0x23
io 0x02e8-0x02ef
cftable_entry 0x24
io 0x0000-0x0007
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