Xdcaga(1) —
NAME
Xdcaga − Desktop Computing AGA 1024 Smart Board Interface server for X11
SYNOPSIS
Xdcaga [ option ] ...
DESCRIPTION
Xdcaga is the server for INTERACTIVE X11 running on an INTERACTIVE UNIX Operating System, Version 2.2 or later, using the Desktop Computing Advanced Graphics Accelerator AGA 1024 display adapter. The Xdcaga server is able to provide an effective display area that is larger than the one provided by the standard Xdcaga display adapter. See “panning” below for more details.
Xdcaga operates on a 386- or 486-based ISA or EISA computer. It is normally invoked by a program such as xinit(1) or by the INTERACTIVE Easy Windows Environment.
VT flipping is not supported on this board.
OPTIONS
−config configuration file
Specifies an alternate configuration file to be used instead of /usr/lib/X11/Xconfig.
Other options are described under Xserver(1).
CONFIGURATION
The Info field in the configuration file (see Xconfig(5)) is used to specify options to Xdcaga. This field should be a quoted string consisting of 0 or more keyword parameters, for example, "config_mode=0 pan=y".
The configuration mode specifies the board configuration (resolution, pixel size, monitor, etc.) that will be used. The following table describes the requirements for each of the monitor types:
| Monitors Supported | ||
| Monitor | Horizontal | Vertical |
| Type | Frequency | Frequency |
| Low | 31.5 kHz | 60.0 Hz |
| Medium | 37.0 kHz | 60.0 Hz |
| High Interlaced | 35.5 kHz | 43.5 Hz |
| High | 48.0 kHz | 60.0 Hz |
The following table describes the configuration modes available:
| Configuration Modes Supported | |||||||
| Configuration | Screen | Screen | Screen | Panning | Panning | ||
| Mode | Monitor | Width | Height | Depth | Colors | Width | Height |
| 0 | Low | 640 | 480 | 8 | 256 | 1024 | 1024 |
| 1 | High | 1024 | 768 | 8 | 256 | 1024 | 1024 |
| 2 | Alternate High | 1024 | 768 | 8 | 256 | 1024 | 1024 |
| 3 | High Interlaced | 1024 | 768 | 8 | 256 | 1024 | 1024 |
| 4 | Meduim | 800 | 600 | 8 | 256 | 1024 | 1024 |
The Xdcaga server supports panning of the visible screen area across a larger effective screen. Panning the visible screen means using the screen as a window onto a larger display area. When the mouse travels to an edge of the screen, the entire screen will appear to slide over the full display area. This allows users without “extended” display adapters to have a larger work area than would otherwise be available. Panning can be enabled by adding the keyword parameter pan=y or disabled by adding the keyword parameter pan=n into the Info field of the configuration file.
The display width and height can be made smaller by specifying the keyword parameters display_width=nnn and display_height=nnn. This may be useful in limiting the panned area so that the screen does not become too large to be useful when using a window manager such as Motif, which utilizes pop-up boxes. It is not possible to increase either the width or the height of the display.
The screen width and height can be specified with the keywords screen_width=nnn and screen_height=nnn. This specifies the dimensions of the screen in inches. This value must be an integer.
For example, the following configuration file entry fully specifies display 0 to be a standard Xdcaga console display 640 pixels wide by 480 pixels high with 16 colors, with panning enabled, running on a screen 12 inches wide and 9 inches high:
| display | DCAGA | "config_mode=0 pan=y screen_width=12 screen_height=9" | 0 | /dev/console |
| keyboard | AT | 101 | 0 | /dev/console:/dev/vt%02d |
| mouse | LOGI-S | "1200 3" | 0 | /dev/tty00 |
FILES
/usr/lib/X11/Xconfig
server device configuration file
SEE ALSO
X(1), Xserver(1), xconfig(1), xinit(1), Xconfig(5), dcaga(7).
\*U — Version 1.0