Author: jcrouse
Date: 2008-08-11 19:19:10 +0200 (Mon, 11 Aug 2008)
New Revision: 3498
Modified:
trunk/payloads/libpayload/drivers/video/vga.c
Log:
Make cursor positioning work by using both halves of the VGA cursor
position register.
Have vga_scroll_up() and vga_clear_line() present row/column arguments to
the VIDEO() macro in the right order.
Signed-off-by: Jonathan A. Kollasch <[EMAIL PROTECTED]>
Acked-by: Jordan Crouse <[EMAIL PROTECTED]>
Modified: trunk/payloads/libpayload/drivers/video/vga.c
===================================================================
--- trunk/payloads/libpayload/drivers/video/vga.c 2008-08-11 17:10:58 UTC
(rev 3497)
+++ trunk/payloads/libpayload/drivers/video/vga.c 2008-08-11 17:19:10 UTC
(rev 3498)
@@ -54,7 +54,7 @@
{
unsigned int addr;
addr = ((unsigned int) crtc_read(0x0E)) << 8;
- addr += crtc_read(0x0E);
+ addr += crtc_read(0x0F);
*x = addr % VIDEO_COLS;
*y = addr / VIDEO_COLS;
@@ -68,7 +68,7 @@
addr = x + (VIDEO_COLS * y);
crtc_write(addr >> 8, 0x0E);
- crtc_write(addr, 0x0E);
+ crtc_write(addr, 0x0F);
}
static void vga_enable_cursor(int state)
@@ -87,7 +87,7 @@
static void vga_clear_line(u8 row, u8 ch, u8 attr)
{
int col;
- u16 *ptr = VIDEO(0, row);
+ u16 *ptr = VIDEO(row, 0);
for(col = 0; col < VIDEO_COLS; col++)
ptr[col] = ((attr & 0xFF) << 8) | (ch & 0xFF);
@@ -95,7 +95,7 @@
static void vga_scroll_up(void)
{
- u16 *src = VIDEO(0,1);
+ u16 *src = VIDEO(1,0);
u16 *dst = VIDEO(0,0);
int i;
--
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