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001 /* Copyright (C) 2004 David Decotigny 002 Copyright (C) 1999 Free Software Foundation, Inc. 003 004 This program is free software; you can redistribute it and/or 005 modify it under the terms of the GNU General Public License 006 as published by the Free Software Foundation; either version 2 007 of the License, or (at your option) any later version. 008 009 This program is distributed in the hope that it will be useful, 010 but WITHOUT ANY WARRANTY; without even the implied warranty of 011 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 012 GNU General Public License for more details. 013 014 You should have received a copy of the GNU General Public License 015 along with this program; if not, write to the Free Software 016 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 017 USA. 018 */ 019 #ifndef _SOS_X86_VIDEOMEM_H_ 020 #define _SOS_X86_VIDEOMEM_H_ 021 022 /** 023 * @file x86_videomem.h 024 * 025 * On x86 PC platforms, the text mode screen memory (and CGA/EGA/VGA 026 * too) is mapped into physical memory. This file handles access to 027 * this screen, supposed to be set in text-mode, through this memory 028 * area. All the functions below print the characters directly to the 029 * memory, without interpreting the escaped characters (such as \n, 030 * \r...) 031 */ 032 033 #include <sos/errno.h> 034 035 /** 036 * x86 video attributes 037 * See http://webster.cs.ucr.edu/AoA/DOS/ch23/CH23-1.html 038 */ 039 /* Normal and Dark/Light foreground */ 040 #define SOS_X86_VIDEO_FG_BLACK 0 041 #define SOS_X86_VIDEO_FG_DKGRAY 8 042 #define SOS_X86_VIDEO_FG_BLUE 1 043 #define SOS_X86_VIDEO_FG_LTBLUE 9 044 #define SOS_X86_VIDEO_FG_GREEN 2 045 #define SOS_X86_VIDEO_FG_LTGREEN 10 046 #define SOS_X86_VIDEO_FG_CYAN 3 047 #define SOS_X86_VIDEO_FG_LTCYAN 11 048 #define SOS_X86_VIDEO_FG_RED 4 049 #define SOS_X86_VIDEO_FG_LTRED 12 050 #define SOS_X86_VIDEO_FG_MAGENTA 5 051 #define SOS_X86_VIDEO_FG_LTMAGENTA 13 052 #define SOS_X86_VIDEO_FG_BROWN 6 053 #define SOS_X86_VIDEO_FG_YELLOW 14 054 #define SOS_X86_VIDEO_FG_LTGRAY 7 055 #define SOS_X86_VIDEO_FG_WHITE 15 056 /* Background */ 057 #define SOS_X86_VIDEO_BG_BLACK (0 << 4) 058 #define SOS_X86_VIDEO_BG_BLUE (1 << 4) 059 #define SOS_X86_VIDEO_BG_GREEN (2 << 4) 060 #define SOS_X86_VIDEO_BG_CYAN (3 << 4) 061 #define SOS_X86_VIDEO_BG_RED (4 << 4) 062 #define SOS_X86_VIDEO_BG_MAGENTA (5 << 4) 063 #define SOS_X86_VIDEO_BG_BROWN (6 << 4) 064 #define SOS_X86_VIDEO_BG_LTGRAY (7 << 4) 065 /* Blinking */ 066 #define SOS_X86_VIDEO_FG_BLINKING (1 << 7) 067 068 069 /** Setup the video RAM mapping and clear the screen */ 070 sos_ret_t sos_x86_videomem_setup(void); 071 072 /** Clears the screen and set the background color as given by 073 attribute */ 074 sos_ret_t sos_x86_videomem_cls(unsigned char attribute); 075 076 /** Print the string on the scren with the given attribute. Does not 077 handle scrolling */ 078 sos_ret_t sos_x86_videomem_putstring(unsigned char row, unsigned char col, 079 unsigned char attribute, 080 const char *str); 081 082 /** Print the character on the scren with the given attribute. Does not 083 handle scrolling */ 084 sos_ret_t sos_x86_videomem_putchar(unsigned char row, unsigned char col, 085 unsigned char attribute, 086 unsigned char c); 087 088 /** 089 * Print the formatted string. Very restricted version of printf(3): 090 * 1/ can print max 255 chars, 2/ supports only %d/%i, %c, %s, %x 091 * without any support for flag charachters (eg %08x). 092 */ 093 sos_ret_t sos_x86_videomem_printf(unsigned char row, unsigned char col, 094 unsigned char attribute, 095 const char *format, /* args */...) 096 __attribute__ ((format (printf, 4, 5))); 097 098 #endif /* _SOS_X86_VIDEOMEM_H_ */
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