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Bare metal VGA: implement "reverse video" (\e[7m) escape code

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This commit is contained in:
tkchia 2022-09-10 06:46:57 +00:00
parent 26712247ad
commit fa82b57103
1 changed files with 5 additions and 1 deletions
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6
libc/vga/tty.c
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@ -270,7 +270,11 @@ static void TtySetCodepage(struct Tty *tty, char id) {
*/
static uint8_t TtyGetVgaAttr(struct Tty *tty)
{
uint8_t attr = tty->fg | tty->bg << 4;
uint8_t attr;
if ((tty->pr & kTtyFlip) == 0)
attr = tty->fg | tty->bg << 4;
else
attr = tty->bg | tty->fg << 4;
#ifdef VGA_USE_BLINK
/*
* If blinking is enabled, we can only have the 8 dark background color