5C INT 5C - NetBIOS INTERFACE
5C INT 5C - IRQ12 relocated by DESQview 2.26+
5C INT 5C - IRQ4 relocated by DoubleDOS
5C INT 5C - TOPS INTERFACE
5C INT 5C - ATALK.SYS - AppleTalk INTERFACE
5C INT 5C - IBM 802.2 INTERFACE (LLC)
5C INT 5C - $25 LAN - INSTALLATION CHECK
5C0100 INT 5C C - TI Professional PC - KEYBOARD PAUSE KEY VECTOR
5C04 INT 5C - $25 LAN - CHECK IF CONNECTION ALIVE