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/usr/src/redhat/BUILD/legOS/kernel/conio.c File Reference

console input / output. More...

Functions
		void	delay (unsigned ms)
			uncalibrated delay loop. More...
		void	cputc_native (char mask, int pos)
			display native mode segment mask. More...
		void	cputc_native_0 (char mask)
			display native mode segment mask at display position 0. More...
		void	cputc_native_1 (char mask)
			display native mode segment mask at display position 1. More...
		void	cputc_native_2 (char mask)
			display native mode segment mask at display position 2. More...
		void	cputc_native_3 (char mask)
			display native mode segment mask at display position 3. More...
		void	cputc_native_4 (char mask)
			display native mode segment mask at display position 4. More...
		void	cputc_native_5 (char mask)
			display native mode segment mask at display position 5. More...
		void	cputw (unsigned word)
			display a hexword. More...
		void	cputs (char *s)
			display an ASCIIZ string. More...
		void	cls ()
			clear user portion of screen.
Variables
		const char	hex_display_codes []
			hex display codes.
		const char	ascii_display_codes []
			ASCII display codes. More...

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Detailed Description

console input / output.

Author(s):

Markus L. Noga <markus@noga.de>

Warning:

If CONF_LCD_REFRESH is set in config.h, the kernel will refresh the display automatically every 100ms. Otherwise, display updates are realized exclusively by lcd_refresh().

Display positions

Digit display positions are denumerated from right to left, starting with 0 for the digit right to the running man. Digit 5 is only partially present on the RCXs display.

Native segment masks

In these bitmasks, bit 0 toggles the middle segment. Bit 1 toggles the top right segment, and the remaining segments are denumerated counterclockwise. The dot isn't encoded because it is desirable to seperate its positioning from the number display code.

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Function Documentation

void delay (unsigned ms)

uncalibrated delay loop.

Parameters:

ms	approximate time in ms

void cputc_native (char mask, int pos)

display native mode segment mask.

Parameters:

mask	the segment mask.
pos	the desired display position.

this is a dispatcher for the fixed position routines.

void cputc_native_0 (char mask)

display native mode segment mask at display position 0.

Parameters:

mask	the mask to display

void cputc_native_1 (char mask)

display native mode segment mask at display position 1.

Parameters:

mask	the mask to display

void cputc_native_2 (char mask)

display native mode segment mask at display position 2.

Parameters:

mask	the mask to display

void cputc_native_3 (char mask)

display native mode segment mask at display position 3.

Parameters:

mask	the mask to display

void cputc_native_4 (char mask)

display native mode segment mask at display position 4.

Parameters:

mask	the mask to display

void cputc_native_5 (char mask)

display native mode segment mask at display position 5.

Parameters:

mask	the mask to display. only the middle segment is present on the display.

void cputw (unsigned word)

display a hexword.

Parameters:

word	the hexword

position 0 is unaffected by this call.

void cputs (char * s)

display an ASCIIZ string.

Parameters:

s	the string

only the first 5 characters will be displayed. if there are less than 5 characters, the remaining display positions will be cleared.

void cls ()

clear user portion of screen.

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Variable Documentation

const char hex_display_codes[]

hex display codes.

const char ascii_display_codes[]

ASCII display codes.

This is a 7-bit ASCII table only.

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-0.1.7 is released under Mozilla Public License. Original code © 1998-1999 by Markus L. Noga.