55 lines
1.8 KiB
C
55 lines
1.8 KiB
C
//---
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// gint:drivers:t6k11 - Toshiba T6K11 driver
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//
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// This is the screen driver used by fx9860g (monochrome) models.
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//---
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#ifndef GINT_DRIVERS_T6K11
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#define GINT_DRIVERS_T6K11
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#include <gint/defs/types.h>
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/* t6k11_display() - send vram data to the LCD device
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A typical 128*64 VRAM area would use y1 = 0, y2 = 64, stride = 16. It is
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possible to send only a section of the video RAM by specifying y1 > 0 or
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y2 < 64 and moving the vram pointer accordingly.
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@vram Video RAM address
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@y1 First row to send
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@y2 Last row to send + 1
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@stride Number of bytes between each row */
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void t6k11_display(const void *vram, int y1, int y2, size_t stride);
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/* t6k11_contrast() - change the contrast setting
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Adjusts the screen contrast. The parameter takes value in range 0 .. 32 and
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is adjusted when not in range.
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0 (bright) <-------- 14 (OS default) --------> 32 (dark)
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It is not possible to read the contrast value from the display driver, but
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the system stores its contrast setting in RAM. The location is OS-dependent.
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It would be possible to restore contrast, or update the system value on
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change, if the address was known for all OS versions.
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OS 02.05.2201 8800'b93c
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@contrast Requested contrast value */
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void t6k11_contrast(int contrast);
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/* t6k11_backlight() - manage the screen backlight
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Changes the backlight status depending on the value of the argument:
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- If setting > 0, turns the backlight on.
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- If setting = 0, turns the backlight off.
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- If setting < 0, toggles backlight.
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This function has no effect on models that do not support the backlight,
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although gint does not provide any facility for detecting them.
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@setting Requested backlight setting */
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void t6k11_backlight(int setting);
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#endif /* GINT_DRIVERS_T6K11 */
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