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+/* most of this is taken from the file */
+/* hal/powerpc/cogent/current/src/hal_diag.c in the */
+/* Cygnus eCos source. Here is the copyright notice: */
+/* */
+/*============================================================================= */
+/* */
+/* hal_diag.c */
+/* */
+/* HAL diagnostic output code */
+/* */
+/*============================================================================= */
+/*####COPYRIGHTBEGIN#### */
+/* */
+/* ------------------------------------------- */
+/* The contents of this file are subject to the Cygnus eCos Public License */
+/* Version 1.0 (the "License"); you may not use this file except in */
+/* compliance with the License. You may obtain a copy of the License at */
+/* http://sourceware.cygnus.com/ecos */
+/* */
+/* Software distributed under the License is distributed on an "AS IS" */
+/* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the */
+/* License for the specific language governing rights and limitations under */
+/* the License. */
+/* */
+/* The Original Code is eCos - Embedded Cygnus Operating System, released */
+/* September 30, 1998. */
+/* */
+/* The Initial Developer of the Original Code is Cygnus. Portions created */
+/* by Cygnus are Copyright (C) 1998,1999 Cygnus Solutions. All Rights Reserved. */
+/* ------------------------------------------- */
+/* */
+/*####COPYRIGHTEND#### */
+/*============================================================================= */
+/*#####DESCRIPTIONBEGIN#### */
+/* */
+/* Author(s): nickg, jskov */
+/* Contributors: nickg, jskov */
+/* Date: 1999-03-23 */
+/* Purpose: HAL diagnostic output */
+/* Description: Implementations of HAL diagnostic output support. */
+/* */
+/*####DESCRIPTIONEND#### */
+/* */
+/*============================================================================= */
+
+/* FEMA 162B 16 character x 2 line LCD */
+
+/* status register bit definitions */
+#define LCD_STAT_BUSY 0x80 /* 1 = display busy */
+#define LCD_STAT_ADD 0x7F /* bits 0-6 return current display address */
+
+/* command register definitions */
+#define LCD_CMD_RST 0x01 /* clear entire display and reset display addr */
+#define LCD_CMD_HOME 0x02 /* reset display address and reset any shifting */
+#define LCD_CMD_ECL 0x04 /* move cursor left one pos on next data write */
+#define LCD_CMD_ESL 0x05 /* shift display left one pos on next data write */
+#define LCD_CMD_ECR 0x06 /* move cursor right one pos on next data write */
+#define LCD_CMD_ESR 0x07 /* shift disp right one pos on next data write */
+#define LCD_CMD_DOFF 0x08 /* display off, cursor off, blinking off */
+#define LCD_CMD_BL 0x09 /* blink character at current cursor position */
+#define LCD_CMD_CUR 0x0A /* enable cursor on */
+#define LCD_CMD_DON 0x0C /* turn display on */
+#define LCD_CMD_CL 0x10 /* move cursor left one position */
+#define LCD_CMD_SL 0x14 /* shift display left one position */
+#define LCD_CMD_CR 0x18 /* move cursor right one position */
+#define LCD_CMD_SR 0x1C /* shift display right one position */
+#define LCD_CMD_MODE 0x38 /* sets 8 bits, 2 lines, 5x7 characters */
+#define LCD_CMD_ACG 0x40 /* bits 0-5 sets character generator address */
+#define LCD_CMD_ADD 0x80 /* bits 0-6 sets display data addr to line 1 + */
+
+/* LCD status values */
+#define LCD_OK 0x00
+#define LCD_ERR 0x01
+
+#define LCD_LINE0 0x00
+#define LCD_LINE1 0x40
+
+#define LCD_LINE_LENGTH 16
+
+extern void lcd_init(void);
+extern void lcd_write_char(const char);
+extern void lcd_flush(void);
+extern void lcd_write_string(const char *);
+extern void lcd_printf(const char *, ...);