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Removed uneccesary documentation

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This commit is contained in:
Pierre-Emmanuel Gob. 2026-09-18 11:17:27 +02:00
parent 577d28cd2e
commit c002e8b250
2 changed files with 7 additions and 19 deletions
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13
kernel/arch/x86_64/console.c
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@ -1,4 +1,4 @@
/* Nadir console: VGA text-mode driver (see console.h). */
/* VGA text-mode driver (see console.h). */
#include <stdint.h>
@ -9,14 +9,13 @@
#define VGA_ADDR 0xB8000
#define COLOR_DEFAULT 0x0FU /* white on black */
/* Cursor position. Lives in BSS, zeroed by stage 2 before kmain runs. */
/* Cursor position. Lives in BSS. */
static uint8_t cursor_row;
static uint8_t cursor_col;
/* Text buffer: one 16-bit cell per character, low byte is the ASCII code,
/* Text buffer, one 16-bit cell per character, low byte is the ASCII code,
* high byte is the color attribute. `volatile` so the compiler keeps every
* store in order: this is memory-mapped I/O, and dropped or reordered
* writes would corrupt the screen. */
* store in order. */
static volatile uint16_t *const vga = (uint16_t *)VGA_ADDR;
/* Move every line one row up and blank the last line */
@ -52,12 +51,12 @@ void console_putchar(char c)
(uint16_t)((COLOR_DEFAULT << 8) | c);
cursor_col++;
if (cursor_col >= VGA_WIDTH) {
/* Past the right edge: wrap to the next line. */
/* Wrap to the next line. */
cursor_col = 0;
cursor_row++;
}
}
/* Past the bottom line: scroll and stay on the last line. */
/* Past the bottom line scroll and stay on the last line. */
if (cursor_row >= VGA_HEIGHT) {
scroll();
cursor_row = VGA_HEIGHT - 1;