| VGA(4) | Device Drivers Manual | VGA(4) | 
vga —
options VGA_CONSOLE_SCREENTYPE="??x??"
options VGA_CONSOLE_ATI_BROKEN_FONTSEL
  
  vga0 at isa?
  
  vga* at pci?
  
  wsdisplay* at vga? console ?
The vga driver supports text-mode hardware
    acceleration on the VGA hardware. Currently, the driver runs the display
    with a 720×400 pixel resolution. The VGA text-mode accelerator
    divides the display into fixed-size character cells. The size of the
    character cells specifies the number of characters available on the screen
    and the resolution of the font. The wsdisplay screen “types”
    supported by the vga driver are described by the
    number of character cells available on the screen. See below for a complete
    list of supported screen modes in the vga
  driver.
Each screen mode requires a suitable font to be loaded into the
    kernel by the
    wsfontload(8) utility,
    before the screen can be used. The size of the font and the screen mode must
    match for use on the 720×400 display. For example, a screen mode with
    80 columns and 40 rows requires a font where each character is 8 pixels wide
    and 10 pixels high. The vga driver can display fonts
    of the original IBM type and ISO-8859-1 encoded fonts. A builtin font of 256
    characters and 8×16 pixels is always present on the VGA hardware.
The colour VGA hardware supports the display of 16 different
    colours at the same time. It is possible with VGA colour systems to use
    fonts with 512 characters at any one time. This is due to the fact that with
    VGA adapters one can specify an alternate font to be used instead of bright
    letters (used for highlighting on the screen). As an experimental feature,
    the “higher half” fonts of the former
    NetBSD/i386 pcvt driver
    distribution can be used too if the kernel option
    “WSCONS_SUPPORT_PCVTFONTS” was set at compile time. This is
    only useful with the “*bf” screen types; a font containing the
    ASCII range of characters must be available too on this screen.
Currently, the following screen types are supported:
If you have an Ati videocard and you are experiencing problems
    with fonts other than 80x25, you can try to set options
    VGA_CONSOLE_ATI_BROKEN_FONTSEL in you kernel configuration and see if
    it helps.
The vga driver supports multiple virtual
    screens on one physical display. The screens allocated on one display can be
    of different “types”. The type is determined at the time the
    virtual screen is created and can't be changed later. Screens are either
    created at kernel startup (then the default type is used) or later with help
    of the wsconscfg(8)
    utility.
VGA cards are supposed to emulate an MDA if a monochrome display is connected. In this case, the device will naturally not support colors at all, but offer the capability to display underlined characters instead. The “80x25bf”, “80x40bf”, “80x50bf” and “80x24bf” screen types will not be available. This mode of operation has not been tested.
| May 4, 2003 | NetBSD 10.1 |