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fixed VGA resolutions with height > 1024 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2121 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2006-08-18 09:32:04 +00:00
parent 6e1b3e4da4
commit 83acc96b23
3 changed files with 22 additions and 12 deletions
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13
hw/cirrus_vga.c
View File

@ -1000,12 +1000,12 @@ static void cirrus_write_bitblt(CirrusVGAState * s, unsigned reg_value)
***************************************/
static void cirrus_get_offsets(VGAState *s1,
uint32_t *pline_offset,
uint32_t *pstart_addr)
uint32_t *pline_offset,
uint32_t *pstart_addr,
uint32_t *pline_compare)
{
CirrusVGAState * s = (CirrusVGAState *)s1;
uint32_t start_addr;
uint32_t line_offset;
uint32_t start_addr, line_offset, line_compare;
line_offset = s->cr[0x13]
| ((s->cr[0x1b] & 0x10) << 4);
@ -1018,6 +1018,11 @@ static void cirrus_get_offsets(VGAState *s1,
| ((s->cr[0x1b] & 0x0c) << 15)
| ((s->cr[0x1d] & 0x80) << 12);
*pstart_addr = start_addr;
line_compare = s->cr[0x18] |
((s->cr[0x07] & 0x10) << 4) |
((s->cr[0x09] & 0x40) << 3);
*pline_compare = line_compare;
}
static uint32_t cirrus_get_bpp16_depth(CirrusVGAState * s)

18
hw/vga.c
View File

@ -935,13 +935,15 @@ static int update_palette256(VGAState *s)
static void vga_get_offsets(VGAState *s,
uint32_t *pline_offset,
uint32_t *pstart_addr)
uint32_t *pstart_addr,
uint32_t *pline_compare)
{
uint32_t start_addr, line_offset;
uint32_t start_addr, line_offset, line_compare;
#ifdef CONFIG_BOCHS_VBE
if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
line_offset = s->vbe_line_offset;
start_addr = s->vbe_start_addr;
line_compare = 65535;
} else
#endif
{
@ -951,9 +953,15 @@ static void vga_get_offsets(VGAState *s,
/* starting address */
start_addr = s->cr[0x0d] | (s->cr[0x0c] << 8);
/* line compare */
line_compare = s->cr[0x18] |
((s->cr[0x07] & 0x10) << 4) |
((s->cr[0x09] & 0x40) << 3);
}
*pline_offset = line_offset;
*pstart_addr = start_addr;
*pline_compare = line_compare;
}
/* update start_addr and line_offset. Return TRUE if modified */
@ -964,11 +972,7 @@ static int update_basic_params(VGAState *s)
full_update = 0;
s->get_offsets(s, &line_offset, &start_addr);
/* line compare */
line_compare = s->cr[0x18] |
((s->cr[0x07] & 0x10) << 4) |
((s->cr[0x09] & 0x40) << 3);
s->get_offsets(s, &line_offset, &start_addr, &line_compare);
if (line_offset != s->line_offset ||
start_addr != s->start_addr ||

3
hw/vga_int.h
View File

@ -108,7 +108,8 @@
int (*get_bpp)(struct VGAState *s); \
void (*get_offsets)(struct VGAState *s, \
uint32_t *pline_offset, \
uint32_t *pstart_addr); \
uint32_t *pstart_addr, \
uint32_t *pline_compare); \
void (*get_resolution)(struct VGAState *s, \
int *pwidth, \
int *pheight); \