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diff --git a/share/doc/iso/wiscman/cons.4 b/share/doc/iso/wiscman/cons.4 new file mode 100644 index 0000000..73bd3fc --- /dev/null +++ b/share/doc/iso/wiscman/cons.4 @@ -0,0 +1,241 @@ +.\" +.\" 5799-WZQ (C) COPYRIGHT IBM CORPORATION 1986,1987,1988 +.\" LICENSED MATERIALS - PROPERTY OF IBM +.\" REFER TO COPYRIGHT INSTRUCTIONS FORM NUMBER G120-2083 +.\" +.\"$Header:cons.4_ca 11.3$ +.\"$ACIS:cons.4_ca 11.3$ +.\"$Source: /ibm/acis/usr/man/man4/RCS/cons.4_ca,v $ +.\" This file uses -man macros. +.TH CONS 4 "Sept 1988" "Space overwritten by .AC macro" " " +.AC 1 0 +.SH NAME +cons \- keyboard and console display interface +.SH DESCRIPTION +The keyboard and various possible displays combine to +provide a terminal-like +interface to the system. Internally, these are separate devices which +software combines to emulate a normal terminal. See the appropriate manual +pages for information about each display and the keyboard. +.PP +The keyboard adapter also supports the speaker, which is activated +when the ASCII character \fBbel\fP (\fB^G\fP) +is sent to the display with software. +For additional information on speaker control, see \fIspeaker\fP(4). +.PP +.B Console Device Control +.PP +The display devices, +\fI/dev/ttyaed\fR, \fI/dev/ttyap16\fR, \fI/dev/ttyap8c\fR, +\fI/dev/ttyapa8\fR, \fI/dev/ttyega\fR, \fI/dev/ttymono\fR, +\fI/dev/ttympel\fR, \fI/dev/ttyvga\fR, and \fI/dev/tty8514\fR are all +minor devices under +\fI/dev/console\fR, and are all capable of displaying console output. +Unique to this system is the fact that you may have one or more of these +displays on your workstation at a time and any one can act as a console. +With only one keyboard and system mouse, the console driver +multiplexes these input devices to the many displays. +All of the displays may have simultaneous logins and the user +can ``hot key'' between each display. +At first, this +``input focus'' +is on +the first device in the above sequence to +be found at initialization time. The input focus +can be manually switched to the next available display by pressing the +default ``hot key'' <Alt><Scroll Lock>. +When the +input focus +is on a display, all keyboard and mouse data are sent to the process(es) +that read from that display. +.PP +If no other console tty device is open, and only the default input +emulator is used (see \fIkbdemul\fP(4)), the input focus is set to +\fI/dev/console\fP. In this case, <Alt><Scroll Lock> only switches +which display gets console output. +In the case where one or more tty devices are open, or the default input +emulator changes, \fI/dev/console\fP gets no input. It tries to send output +to the currently focused device. A user can redirect these console messages +to any tty devices with the TIOCCONS ioctl. +.PP +To support the many displays and the multiplexing between them, an +emulator package was developed to work with the console driver. +This package allows different types of emulation on input and output to +be written independently of device. +.PP +The display devices \fI/dev/aed\fP, \fI/dev/apa16\fP, \fI/dev/apa8c\fP, +\fI/dev/apa8\fP, \fI/dev/ega\fR, \fI/dev/mono\fP, +\fI/dev/mpel\fR, \fI/dev/vga\fR, and \fI/dev/ibm8514\fR +are also minor devices to +\fI/dev/console\fP. They are typically used by window managers and other +graphic applications. When the focus is pointed to one of these display +devices, the console messages are put in a circular buffer +(see \fIbufemul\fP(4)) +unless redirected with the TIOCCONS ioctl. +The buffer is flushed to the screen upon closing the display device. +.PP +The following are generic console \fIioctls\fP defined in \fIscreen_cousf.u\fP: +.TP 20 +CON_SELECT_SCREEN +Output focus is set to display number (arg > 0) or +to next display in list (arg < 0). Previous display number is returned. +.TP 20 +CON_GET_SCREEN +Just returns the current output focus display number. +.TP 20 +EIGETD +Gets the number of the current input emulator for this display. +.TP 20 +EOGETD +Gets the number of the current output emulator for this display. +.TP 20 +EISETD +Sets the input emulator and returns the previous for this display. +.TP 20 +EOSETD +Sets the output emulator and returns the previous for this display. +.TP 20 +CON_INIT_SCREEN +Initializes the specified display (arg >=0) or this display +(arg < 0). +.TP 20 +CON_GET_FOCUS_CODE +Gets the current keyboard code for setting the console +focus (affects xemul only). +.TP 20 +CON_SET_FOCUS_CODE +Sets the current keyboard code for setting the console +focus (affects xemul only), and return the previous code. +.PP +All of the above commands take integer arguments. +.PP +The following are generic console \fIioctls\fP defined in \fIconsio.h\fP: +.TP 20 +SCRIOCGETF +Gets the screen control flags for the given display number. +.TP 20 +SCRIOCSETC +Sets the screen control flags for the given display number. +.PP +.in +10 +SCRIOCGETF and SCRIOCSETC use the following structure: +.DT +.nf +struct screen_control { + int device; /* which screen/display to control */ + int switches; /* Flags for this screen */ +}; +.fi +.sp 2 +.RS 6 +.TP 20 +CONSDEV_PRESENT +Display is present on this system. +This bit cannot be changed by SCRIOSETC. +.TP 20 +CONSDEV_KERNEL +Display is available to the kernel. +.TP 20 +CONSDEV_USER +Display is available to the user. +.TP 20 +CONSDEV_INIT +Display has been initialized for output. +.TP 20 +CONSDEV_TTY +Diplay has been initialuzed for output. +This bit cannot be changed by SCRIOSETC. +.TP 20 +CONSDEV_GRA +Graphics display has been opened directly by minor device number. +This bit cannot be changed by SCRIOSETC. +.TP 20 +CONSDEV_NOINPUT +Prevents the "round-robin" console focus-switching from finding this +display. This flag is cleared when \fIbuf_emul\fP is closed. +.TP 20 +SCRSETNIP +Sets the no-input bit in the screen control flags for the +display's current file description. +.TP 20 +SCRCLRNIP +Clears the no-input bit in the screen control flags for the +display's current file description. +.RE +.PP +The following \fIioctl\fP is defined in \fIbufemul.h\fP: +.TP 20 +BUFDISPINFO +\fIArg\fP returns the following information about the display: +.PP +.RS 6 +.TP 20 +BUF_IS_ATR(arg) +True when the CPU is an IBM 6152 Academic System. +.TP 20 +BUF_IS_RTPC(arg) +True when the CPU is an IBM RT PC. +.TP 20 +BUF_GET_PCCODE(x) +Get PC-Code version/type byte (IBM 6152 only). +.bp +.TP 20 +BUF_GET_VGA(arg) +Get the type of display connected to the VGA. +0=none, 1=color, 2=gray. Valid only for the IBM 6152 Academic System. +.TP 20 +BUF_GET_8514(arg) +Get the type of display connected to the IBM 8514/A. +0=none, 1=color, 2=gray. Valid only for the IBM 6152 Academic System. +.TP 20 +BUF_GET_EGA(arg) +Returns the value of the switches on the EGA display. Valid only for the IBM RT PC with an EGA card installed. +.RE +.PP +All of the above \fIioctl\fP system calls are device-independent controls +for dealing with the emulators. +.PP +Each emulator has its own set of \fIioctls\fP for its own emulation purposes. +These other \fIiotls\fP are used in window-manager emulators for operations +such as passing/positioning the mouse locator for/on the display. +See the man page for any particular emulator for more information. +.PP +.SH NOTE +On the IBM RT PC, the kernel flashes ``98'' on the LEDs if it cannot find any +configured display during initialization, and then proceeds. +.SH DIAGNOSTICS +None. +.SH FILES +.PP +For the IBM RT PC: +.br +/dev/console +.br +/dev/aed +.br +/dev/apa16 +.br +/dev/apa8c +.br +/dev/apa8 +.br +/dev/ega +.br +/dev/mono +.br +/dev/mpel +.br +.PP +For the IBM 6152 Academic System: +.br +/dev/vga +.br +/dev/ibm8514 +.SH "SEE ALSO" +bufemul(4), bus(4), ibm5081(4), ibm5151(4), ibm6153(4), ibm6154(4), +ibm6155(4), ibm8514(4), ibmaed(4), ibmemul(4), kbdemul(4), +speaker(4), stdemul(4), tty(4), vga(4), xemul(4), setscreen(8) +.br +``IBM/4.3 Console Emulators'', in Volume II, Supplementary Documents + + |
