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dc(7) Miscellaneous Information Manual dc(7) NAME dc - serial line/mouse/keyboard SYNOPSIS controller dc0 at ibus0 slot 0 vector dcintr DESCRIPTION The dc serial line controller provides DECstation 2100, DECstation 3100, DECstation 5000, and DECstation 5100 computer systems with key- board, mouse, and serial communications interfaces. The serial communi- cations interfaces on the DECstation 2100 and DECstation 3100 provide partial modem control. The serial communications interfaces on the DEC- station 5000 provide full modem control. The device special file /dev/tty01 on a DECstation 5100 provides full modem control, while the remaining ports provide no modem control at all. All serial communica- tions interfaces operate at baud rates from B50 to B9600, excluding B200. The dc ports are used as follows: Usage Graphics device keyboard at 4800 BPS Mouse or tablet at 4800 BPS Communications port 1 (w/modem control)/local terminal Communications port 2 (w/modem control)/local terminal On all systems except the DECstation 5100, serial port 2 is used for the system console port in server (that is, non-graphics) configura- tions. On DECstation 5100s, the serial port labeled 3 on the back of the system is always the system console port. The serial system con- sole port always operates at 9600 BPS, 8-bits, no parity; modem control is not supported. RESTRICTIONS Data communications equipment attached to the console serial port in server configurations must be set to 9600 BPS, 8-bits, no parity. The scc driver enforces this restriction. FILES console terminal local terminal local terminal local terminal (DECsta- tion 5100 only) RELATED INFORMATION console(7), devio(7), tty(7), MAKEDEV(8) delim off dc(7)