| 38,6 → 38,7 |
|---|
| #include <putchar.h> |
| #include <mm/page.h> |
| #include <mm/as.h> |
| #include <mm/slab.h> |
| #include <arch/mm/page.h> |
| #include <synch/spinlock.h> |
| #include <arch/types.h> |
| 58,6 → 59,7 |
|---|
| SPINLOCK_INITIALIZE(egalock); |
| static uint32_t ega_cursor; |
| static uint8_t *videoram; |
| static uint8_t *backbuf; |
| |
| static void ega_putchar(chardev_t *d, const char ch); |
| |
| 71,6 → 73,10 |
|---|
| void ega_init(void) |
| { |
| uint8_t hi, lo; |
| |
| backbuf = (uint8_t *) malloc(SCREEN * 2, 0); |
| if (!backbuf) |
| panic("Unable to allocate backbuffer.\n"); |
| |
| videoram = (uint8_t *) hw_map(VIDEORAM, SCREEN * 2); |
| outb(0x3d4, 0xe); |
| 98,6 → 104,7 |
|---|
| static void ega_display_char(char ch) |
| { |
| videoram[ega_cursor * 2] = ch; |
| backbuf[ega_cursor * 2] = ch; |
| } |
| |
| /* |
| 108,8 → 115,10 |
|---|
| if (ega_cursor < SCREEN) |
| return; |
| |
| memcpy((void *) videoram, (void *) (videoram + ROW * 2), (SCREEN - ROW) * 2); |
| memmove((void *) videoram, (void *) (videoram + ROW * 2), (SCREEN - ROW) * 2); |
| memmove((void *) backbuf, (void *) (backbuf + ROW * 2), (SCREEN - ROW) * 2); |
| memsetw(videoram + (SCREEN - ROW) * 2, ROW, 0x0720); |
| memsetw(backbuf + (SCREEN - ROW) * 2, ROW, 0x0720); |
| ega_cursor = ega_cursor - ROW; |
| } |
| |
| 151,5 → 160,11 |
|---|
| outb(0x3d5, (uint8_t) (ega_cursor & 0xff)); |
| } |
| |
| void ega_redraw(void) |
| { |
| memcpy(videoram, backbuf, SCREEN * 2); |
| ega_move_cursor(); |
| } |
| |
| /** @} |
| */ |