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Try using only supported video modes

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This commit is contained in:
Baptiste Wicht 2014-01-19 14:00:49 +01:00
parent f17d5a684c
commit 53bd5bbe42
1 changed files with 2 additions and 4 deletions
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6
kernel/src/boot/boot_16.cpp
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@ -114,7 +114,7 @@ void detect_memory(){
uint16_t read_mode(uint16_t i){
uint16_t mode;
asm volatile("mov gs, %0; mov si, %1; add si, %3; mov %0, gs:[si]"
asm volatile("mov gs, %2; mov si, %1; add si, %3; mov %0, gs:[si]"
: "=a" (mode)
: "rm" (vesa::vbe_info_block.video_modes_ptr[0]),
"rm" (vesa::vbe_info_block.video_modes_ptr[1]),
@ -153,9 +153,7 @@ void setup_vesa(){
bool one = false;
for(uint16_t it_mode = 0x0; it_mode < 0x100; ++it_mode){
auto mode = it_mode + 0x100 + 0x4000;
for(uint16_t i = 0, mode = read_mode(i); mode != 0xFFFF; mode = read_mode(2 * ++i)){
asm volatile ("int 0x10"
: "=a"(return_code)
: "a"(0x4F01), "c"(mode), "D"(&vesa::mode_info_block)