void fb_put(char c)
{
uint32_t location = fb_position();
if (c == 0x08 && s_fbx)
{
s_fbx--;
}
else if (c == '\r')
{
s_fbx = 0;
}
else if (c == '\n')
{
s_fbx = 0;
s_fby++;
}
else if (c >= ' ')
{
FB[location] = c | s_attribute;
s_fbx++;
}
if (s_fbx >= FB_COLUMNS)
{
s_fbx = 0;
s_fby++;
}
fb_scroll();
fb_move_cursor();
}
// Write the contents of a buffer of length len to the screen. Should
// automatically advance the cursor after a character has been written, and
// scroll if necessary.
void fb_puts(char *buf, unsigned int len) {
unsigned int i;
for (i = 0; i < len; ++i) {
fb_write_cell(cursor_pos, buf[i], curr_color & 0xF0, curr_color & 0x0F);
cursor_pos = (cursor_pos + 1) % FB_NUM_CELLS;
}
fb_move_cursor();
}
int fb_write(char *buf) {
while(*buf != 0) {
fb_move_cursor(currPos);
fb_write_cell(2 * currPos++, *buf, FB_GREEN, FB_DARK_GREY);
buf++;
}
return currPos;
}
// Write a null-terminated string to the monitor.
void fb_write(char *str) {
unsigned int i;
i = 0;
while (str[i] != '\0') {
fb_write_cell(cursor_pos, str[i++], curr_color & 0xF0, curr_color & 0x0F);
cursor_pos = (cursor_pos + 1) % FB_NUM_CELLS;
}
fb_move_cursor();
}
void kmain() {
fb_clear(BLACK);
char version[64] = "rhinocer/os 0.1";
fb_write_string(0, version, BLACK, WHITE);
fb_move_cursor(0);
while (1) {
}
}
int write(char*buf,unsigned int len)
{
unsigned int index = 0;
unsigned short fb_index = 0;
while(index < len)
{
print_a_letter(index*2, buf[index], 0, 2);
fb_move_cursor(fb_index);
index++;
fb_index++;
}
return 0;
}
int fb_write(char *buf, unsigned int len) {
unsigned int i;
for(i=0; i<len; i++) {
/* Write character at position i */
fb_write_cell(2*__fb_present_pos, buf[i], (unsigned char)0, (unsigned char)15);
fb_move_cursor(__fb_present_pos + 1);
/* If __fb_present_pos goes off the screen, move everything one line up */
if(__fb_present_pos == FRAMEBUFFER_WIDTH * FRAMEBUFFER_HEIGHT) {
fb_move_cursor((FRAMEBUFFER_HEIGHT-1)*FRAMEBUFFER_WIDTH);
int j;
for(j=0; j<2*FRAMEBUFFER_WIDTH*(FRAMEBUFFER_HEIGHT-1); j++) {
__fb[j] = __fb[j + FRAMEBUFFER_WIDTH*2];
}
for(j=j; j<2*FRAMEBUFFER_WIDTH*FRAMEBUFFER_HEIGHT; j++) {
__fb[j] = 0;
}
}
}
return len;
}
// Write a single character to the screen from wherever the cursor is.
void fb_putc(char c) {
fb_write_cell(cursor_pos, c, curr_color & 0xF0, curr_color & 0x0F);
cursor_pos = (cursor_pos + 1) % FB_NUM_CELLS;
fb_move_cursor();
}
void fb_write_cell(unsigned int i, char c, unsigned char fg, unsigned char bg){
fb[i]=c;
fb[i+1]= ((fg & 0x0F) << 4) | (bg & 0x0F);
fb_move_cursor(i/2+1);
}
