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omos-tcnj2024
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garbage code

This commit is contained in:
spikey 2024-02-17 20:16:03 -05:00
parent 9edd683394
commit 1841db88b1
4 changed files with 7 additions and 4 deletions
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1
sys/drv/vga/include/video.h
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@ -4,6 +4,7 @@
#include <types.h> #include <types.h>
#define VGA_SIZE 4000 #define VGA_SIZE 4000
#define VGA_TEXT_SIZE 2000
s32 unused = 0; s32 unused = 0;
s8 *vga_vidmem = (s8 *)0xb8000; s8 *vga_vidmem = (s8 *)0xb8000;

5
sys/drv/vga/video.c
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@ -4,17 +4,18 @@
void void
vga_write(s8 *sequence, s32 size, s8 flags) vga_write(s8 *sequence, s32 size, s8 flags)
{ {
if (size > VGA_SIZE) { if (size > VGA_TEXT_SIZE) {
s32 using_size = size - VGA_SIZE; s32 using_size = size - VGA_SIZE;
for (s32 i = 0; i <= VGA_SIZE; i++) { for (s32 i = 0; i <= VGA_SIZE; i++) {
vga_vidmem[i] = sequence[using_size + i]; vga_vidmem[i] = sequence[using_size + i];
vga_vidmem[++i] = flags;
} }
unused = 4001;
return; return;
} }
while (*sequence != '\0') { while (*sequence != '\0') {
vga_vidmem[unused++] = *sequence; vga_vidmem[unused++] = *sequence;
*sequence++; *sequence++;

2
sys/include/memory.h
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@ -1,4 +1,4 @@
#ifndef MEMORY_H 8 ifndef MEMORY_H
#define MEMORY_H #define MEMORY_H
#include <types.h> #include <types.h>

3
sys/sysinit.c
View File

@ -2,5 +2,6 @@ void
sysinit(void) sysinit(void)
{ {
vga_clearscreen(); vga_clearscreen();
vga_write("Om Smart.", 0x0F); vga_write("Om Smart.", 9, 0x0F);
vga_write("Om Smarter.", 11, 0x0F);
} }