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Minor VGA cleanup.

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This commit is contained in:
Andreas Kling 2018-10-30 23:49:06 +01:00
parent b833aa4162
commit b4f3bc078f
1 changed files with 1 additions and 10 deletions
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11
Kernel/VGA.cpp
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@ -5,8 +5,7 @@
#include "StdLib.h" #include "StdLib.h"
#include "Task.h" #include "Task.h"
PRIVATE BYTE *vga_mem = 0L; static byte* vga_mem = nullptr;
PRIVATE BYTE current_attr = 0x07;
void vga_scroll_up() void vga_scroll_up()
{ {
@ -38,14 +37,8 @@ void vga_putch_at(byte row, byte column, byte ch, byte attr)
vga_mem[cur + 1] = attr; vga_mem[cur + 1] = attr;
} }
byte vga_get_attr()
{
return current_attr;
}
void vga_init() void vga_init()
{ {
current_attr = 0x07;
vga_mem = (byte*)0xb8000; vga_mem = (byte*)0xb8000;
for (word i = 0; i < (80 * 25); ++i) { for (word i = 0; i < (80 * 25); ++i) {
@ -69,9 +62,7 @@ WORD vga_get_cursor()
void vga_set_cursor(WORD value) void vga_set_cursor(WORD value)
{ {
if (value >= (80 * 25)) { if (value >= (80 * 25)) {
/* XXX: If you try to move the cursor off the screen, I will go reddish pink! */
vga_set_cursor(0); vga_set_cursor(0);
current_attr = 0x0C;
return; return;
} }
IO::out8(0x3d4, 0x0e); IO::out8(0x3d4, 0x0e);