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vga: add clearScreenLine

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This commit is contained in:
Mathieu Maret 2018-11-16 19:56:38 +01:00
parent 27293c805c
commit 0bd91897b7
2 changed files with 10 additions and 0 deletions
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9
drivers/vga.c
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@ -25,6 +25,15 @@ void clearScreen(uint bgColor)
}
}
void clearScreenLine(uint bgColor, uint line)
{
volatile short *vga = (short *)VGA_ADDR;
long int colorAttr = bgColor << 12;
for (uint i = VGA_WIDTH * line; i < VGA_WIDTH * (line + 1); i++) {
vga[i] = colorAttr;
}
}
void printInt(int integer)
{
char num[sizeof(int) *

1
drivers/vga.h
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@ -20,6 +20,7 @@ void vprintf(const char *format, va_list ap);
void printf(const char *format, ...);
int VGASetup(uint bgColor, uint color);
void clearScreen(uint bgColor);
void clearScreenLine(uint bgColor, uint line);
void printInt(int integer);
void printIntDetails(int integer, uint color, uint bgColor, int startX, int startY);
void printCharDetails(char str, uint color, uint bgColor, int startX, int startY);