28 lines
584 B
C++
28 lines
584 B
C++
|
#include <stdint.h>
|
||
|
|
#include <stddef.h>
|
||
|
|
|
||
|
|
void put_char(char ch, size_t x, size_t y ){
|
||
|
|
*((uint16_t*)0xb8000+(y * 80 + x)) = ch | ((7 | 0 << 4) << 8);
|
||
|
|
}
|
||
|
|
|
||
|
|
void write_ln(char* s, size_t length, size_t x , size_t y)
|
||
|
|
{
|
||
|
|
// Because read only data is linked at a virtual address we'll need to convert
|
||
|
|
// the string adddres from virtual to phys.
|
||
|
|
s = s - 0xC0000000;
|
||
|
|
size_t column , row;
|
||
|
|
column = x;
|
||
|
|
row = y;
|
||
|
|
for(int i = 0; i < length ; i ++)
|
||
|
|
{
|
||
|
|
|
||
|
|
put_char(s[i] , column,row );
|
||
|
|
column ++;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
extern "C" void testLauncher () {
|
||
|
|
write_ln("hello", 5 ,0,0);
|
||
|
|
}
|