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- DISPLAY.SYS
- Use code page switching on EGA, LCD and PS/2 displays
- See also <NLSFUNC> <COUNTRY> <DEVICE> <CONFIG.SYS>
-
- DISPLAY.SYS is a device driver which allows you to use code page
- switching on the IBM PC convertible LCD screen, EGA, and IBM Personal
- System/2 displays.
-
- USE: DEVICE=[d:][path] DISPLAY.SYS CON[:] = (type[,[hwcp][,n,m]])
-
- type specifies the display adapter type. The display types are MONO,
- CGA, EGA, and LCD.
- hwcp specifies the code page supported directly by the hardware. The
- possible hwcp are 437 (US), 850 (Mult), 860 (Port), 863 (Can-Fr), and
- 865 (Nor).
- n specifies the number of additional codes that can be supported.
- This value is referred to as the number of prepared code pages.
- The allowable range of additional code pages n must be between 0
- and 12 and is hardware dependant. The MONO and CGA cannot
- support prepared pages. The value of n for these must be 0.
-
- Each prepared code page requires a buffer in DISPLAY.SYS which hold
- the corresponding character fonts.
-
- m specifies the number of sub-fonts supported for each code page.
- These sub-fonts vary for different adapters and display modes. If
- the value of m is not specified then the default is the maximum
- number of sub-fonts:
-
- --------------------------------------
- | Devices | Font Size | Default m |
- |-----------|-----------|--------------|
- |EGA | 8x8 8x14 | 2 |
- |IBM PS/2 | 8x8 8x16 | 2 |
- |Convertible| 8x8 | 1 |
- --------------------------------------
- ------------------------------------
- | Device|Default| n | m |Default|
- | Type | n | | | m |
- |-------|-------|------|-----|-------|
- | CGA | 0 | 0 | 0 | 0 |
- | MONO | 0 | 0 | 0 | 0 |
- | EGA & | 1 | 1-12 | 1-2 | 2 |
- | PS/2 | | | | |
- | LCD | 1 | 1-12 | 1 | 1 |
- |_______|_______|______|_____|_______|
-
- The number of additional code page values may cause a buffer to be
- used to hold the image data. The size of this buffer is dependent on
- the display type.
-
- EXAMPLE: DEVICE=C:\DOS\DISPLAY.SYS CON:=(EGA, 437, 2)
- This example installs the code page switching support for the CON:
- device. It also tells the CON: driver that the display is an Enhanced
- Graphics Adapter with the 437 code page built in. The CON driver
- holds up to two pages prepared by the use of the <MODE> command.
-
- NOTE: If you are using <ANSI.SYS> and <DISPLAY.SYS>, the DEVICE=ANSI.SYS
- statement must appear before the DEVICE=DISPLAY.SYS statement in the
- <CONFIG.SYS> file.
-
- NOTE: The display type EGA supports the Enhanced Graphics Adapter and
- IBM Personal System/2. The IBM Personal System/2 video support is not
- functionally equivalent to EGA video support.
-