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Bare metal VGA: enable bright background colors, disable blinking (#603)

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Co-authored-by: tkchia <tkchia-cosmo@gmx.com>
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tkchia 2022-09-09 19:35:16 +08:00 • committed by GitHub
parent f68151c010
commit 1db76c288e
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3 changed files with 64 additions and 9 deletions
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8
libc/vga/vga-init.S
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@ -25,6 +25,7 @@
│ OTHER DEALINGS IN THE SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/macros.internal.h"
#include "libc/vga/vga.internal.h"
// Code snippet for initializing the VGA video mode for bare metal.
//
@ -57,6 +58,13 @@
mov $0x0500,%ax # just make sure we are on display
# page 0
2: int $0x10 # otherwise, change the video mode
mov $0x1003,%ax # enable/disable VGA text blinking
#ifdef VGA_USE_BLINK
mov $1,%bx
#else
xor %bx,%bx
#endif
int $0x10
.previous
.code64
.section .rodata,"a",@progbits