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NAME

lcd — front panel LCD display

SYNOPSIS

lcd0 at mainbus0

DESCRIPTION

The lcd driver provides access to the front panel LCD display on LUNA-88K. It is accessed using write(2) to print the characters on the LCD. The device has a physical display area of 16 characters x 2 lines and an internal line buffer of 40 characters x 2 lines.

The following ioctl calls apply to the lcd device:

LCDCLS

Clear the LCD screen, restore display area from shift and move the cursor to upper-left position.

LCDHOME

Restore display area from shift and move the cursor to upper-left position.

LCDMODE int *

Specify cursor advance direction and display shift mode.

LCDDISP int *

Control display on/off, cursor on/off, and cursor blinking on/off.

LCDMOVE int *

Move the cursor or shift the display area.

LCDSEEK int *

Move the cursor to the specified position. On the first line, the position is specified by a value between 0x00 and 0x27. On the second line, the value is between 0x40 and 0x67.

LCDRESTORE

Restore boot-time LCD message.

These ioctl parameters are defined in <machine/lcd.h>.

FILES

/dev/lcd

 

SEE ALSO

ioctl(2)

HISTORY

The lcd driver first appeared in OpenBSD 4.1.