/lib/firmware/cis/src/3CCFEM556.cis is in linux-firmware 1.157.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 | #
# This card is MFC-compliant, but identifies itself as single function
#
vers_1 5.0, "3Com", "Megahertz 3CCFEM556", "LAN + 56k Modem"
manfid 0x0101, 0x0556
funcid 0
mfc {
funcid network_adapter
config base 0x1000 mask 0x267 last_index 0x07
cftable_entry 0x07
Vcc Vnom 5V
irq mask 0xffff [level]
io 0x0000-0x000f [8bit] [16bit]
}, {
funcid serial_port
config base 0x1100 mask 0x277 last_index 0x27
cftable_entry 0x27
Vcc Vnom 5V
irq mask 0xffff [level]
io 0x0000-0x0007 [8bit]
}
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