diff options
Diffstat (limited to 'screen/console.c')
-rw-r--r-- | screen/console.c | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/screen/console.c b/screen/console.c new file mode 100644 index 0000000..57f9d6b --- /dev/null +++ b/screen/console.c @@ -0,0 +1,100 @@ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, + * MA 02110-1301, USA. + * + */ + +#ifndef CONSOLE_C +#define CONSOLE_C + +#include <toast.h> + +/********************************************************* + * Set up the console buffer and pointer + ********************************************************/ +void console_init() +{ + console_buffer = (char*)0xB8000; + console_pointer = 0; +} + +/********************************************************* + * Update flashing cursor to match console_position + * Note: Does _NOT_ dictate the pos for next printed byte + ********************************************************/ +void console_update_cursor() +{ + outb(0x3D4, 0x0F); + outb(0x3D5, ((console_pointer/2) & 0xFF)); + outb(0x3D4, 0x0E); + outb(0x3D5, (((console_pointer/2)>>8)&0xFF)); +} + +/********************************************************* + * Clear the console with the current colour scheme + ********************************************************/ +void console_clear() +{ + int console_pointer; + for (console_pointer = 0; console_pointer < 4000; console_pointer++) + { + console_buffer[console_pointer] = console_color; + console_buffer[console_pointer++] = 0; + } + //console_update_cursor(); +} + + +/********************************************************* + * Set the console foreground and background colours + ********************************************************/ +void console_set_colors(uint8_t fg, uint8_t bg) +{ + console_color = (bg << 4) | fg; +} + + +/********************************************************* + * Set the console foreground colour + ********************************************************/ +void console_set_color(uint8_t fg) +{ + console_color &= 0xF0; // Zero-out foreground color + console_color |= fg; // Apply foreground color +} + +/********************************************************* + * Print a null-terminated string to the text screen + ********************************************************/ +void console_print(char *string, ...) +{ + uint16_t i; + for (i = 0; i < strlen(string); i++) + { + // If special char, handle appropriately + if (string[i] < 32) + { + switch (string[i]) + case 10: + console_pointer = 160 + (console_pointer / 160) * 160; + } else { + console_buffer[console_pointer++] = string[i]; + console_buffer[console_pointer++] = console_color; + } + } + console_update_cursor(); +} + +#endif
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