atoi(), itoa()

2 files changed, 159 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
\ No newline at end of file
diff --git a/screen/console.h b/screen/console.h
new file mode 100644
index 0000000..66a867a
--- /dev/null
+++ b/screen/console.h
@@ -0,0 +1,59 @@
+/*
+ * 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_H
+#define __CONSOLE_H
+
+#define console_width		80
+#define console_height		25
+#define console_x_pos		(console_pointer%(2*console_width))
+#define console_y_pos		(uint8_t)(console_pointer/(2*console_width))
+
+#define COLOR_BLACK			0x0
+#define COLOR_BLUE			0x1
+#define COLOR_GREEN			0x2
+#define COLOR_TEAL			0x3
+#define COLOR_BROWN			0x4
+#define COLOR_PURPLE		0x5
+#define COLOR_GOLD			0x6
+#define COLOR_BRIGHT_GREY	0x7
+#define COLOR_BRIGHT_GRAY	0x7 // Alias for grey vs gray
+#define COLOR_GRAY			0x8
+#define COLOR_GREY			0x8 // Alias for grey vs gray
+#define COLOR_BRIGHT_BLUE	0x9
+#define COLOR_BRIGHT_GREEN	0xA
+#define COLOR_LIME			0xA // Alias for lime vs bright green
+#define COLOR_AQUA			0xB
+#define COLOR_RED			0xC
+#define COLOR_PINK			0xD
+#define COLOR_YELLOW		0xE
+#define COLOR_WHITE			0xF
+
+
+char* console_buffer;
+uint16_t console_pointer;
+uint8_t console_color;
+
+void console_init();
+void console_update_cursor();
+void console_clear();
+void console_set_colors(uint8_t fg, uint8_t bg);
+void console_set_color(uint8_t fg);
+void console_print(char *string, ...);
+
+#endif
\ No newline at end of file