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- changed VGA register offset and bits

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git-svn-id: http://moon:8086/svn/vhdl/trunk@614 cc03376c-175c-47c8-b038-4cd826a8556b
This commit is contained in:
jens
2009-11-05 17:15:28 +00:00
parent c9ba66b646
commit d8517c136e
2 changed files with 46 additions and 14 deletions
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lib/CPUs/MIPS/bsp/examples/libsys.c
+25 -6
View File
@@ -242,18 +242,37 @@ void _ser_putchar(char c)
void cg_writechar(char c)
{
volatile UINT32 *pCG_data = (UINT32*)sys_vga_data;
volatile UINT32 *pCG_ctrl = (UINT32*)sys_vga_ctrl;
volatile UINT32 *pCG_ascii = (UINT32*)sys_vga_ascii;
while (!(*pCG_data & 1));
*pCG_data = (UINT32)c;
while (!(*pCG_ctrl & sys_vga_bit_cgrdy));
*pCG_ascii = (UINT32)c;
}
void cg_clr_line(void)
{
volatile UINT32 *pCG_clrline = (UINT32*)sys_vga_clrline;
volatile UINT32 *pCG_ctrl = (UINT32*)sys_vga_ctrl;
while (!(*pCG_ctrl & sys_vga_bit_cgrdy));
*pCG_ctrl |= sys_vga_bit_clrline;
}
void cg_clr_screen(void)
{
volatile UINT32 *pCG_ctrl = (UINT32*)sys_vga_ctrl;
volatile UINT32 *pCG_x = (UINT32*)sys_vga_posx;
volatile UINT32 *pCG_y = (UINT32*)sys_vga_posy;
while (!(*pCG_ctrl & sys_vga_bit_cgrdy));
*pCG_ctrl |= sys_vga_bit_clrscr;
// Cursor home
while (!(*pCG_ctrl & sys_vga_bit_cgrdy));
*pCG_x = 0;
while (!(*pCG_ctrl & sys_vga_bit_cgrdy));
*pCG_y = 0;
while (!(*pCG_clrline & 1));
*pCG_clrline = 1;
}
void _cg_putchar(char c)