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VBE: 8 bit DACs + support for VBE BIOS IDs (Volker Ruppert) 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2163 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2006-09-21 21:46:53 +00:00
parent 05f83f0f95
commit 37dd208d38
2 changed files with 16 additions and 4 deletions
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17
hw/vga.c
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@ -422,7 +422,9 @@ static void vbe_ioport_write_data(void *opaque, uint32_t addr, uint32_t val)
case VBE_DISPI_INDEX_ID:
if (val == VBE_DISPI_ID0 ||
val == VBE_DISPI_ID1 ||
val == VBE_DISPI_ID2) {
val == VBE_DISPI_ID2 ||
val == VBE_DISPI_ID3 ||
val == VBE_DISPI_ID4) {
s->vbe_regs[s->vbe_index] = val;
}
break;
@ -505,6 +507,7 @@ static void vbe_ioport_write_data(void *opaque, uint32_t addr, uint32_t val)
/* XXX: the bios should do that */
s->bank_offset = 0;
}
s->dac_8bit = (val & VBE_DISPI_8BIT_DAC) > 0;
s->vbe_regs[s->vbe_index] = val;
break;
case VBE_DISPI_INDEX_VIRT_WIDTH:
@ -921,9 +924,15 @@ static int update_palette256(VGAState *s)
palette = s->last_palette;
v = 0;
for(i = 0; i < 256; i++) {
col = s->rgb_to_pixel(c6_to_8(s->palette[v]),
c6_to_8(s->palette[v + 1]),
c6_to_8(s->palette[v + 2]));
if (s->dac_8bit) {
col = s->rgb_to_pixel(s->palette[v],
s->palette[v + 1],
s->palette[v + 2]);
} else {
col = s->rgb_to_pixel(c6_to_8(s->palette[v]),
c6_to_8(s->palette[v + 1]),
c6_to_8(s->palette[v + 2]));
}
if (col != palette[i]) {
full_update = 1;
palette[i] = col;

3
hw/vga_int.h
View File

@ -49,6 +49,8 @@
#define VBE_DISPI_ID0 0xB0C0
#define VBE_DISPI_ID1 0xB0C1
#define VBE_DISPI_ID2 0xB0C2
#define VBE_DISPI_ID3 0xB0C3
#define VBE_DISPI_ID4 0xB0C4
#define VBE_DISPI_DISABLED 0x00
#define VBE_DISPI_ENABLED 0x01
@ -103,6 +105,7 @@
uint8_t dac_read_index; \
uint8_t dac_write_index; \
uint8_t dac_cache[3]; /* used when writing */ \
int dac_8bit; \
uint8_t palette[768]; \
int32_t bank_offset; \
int (*get_bpp)(struct VGAState *s); \