yggdrasil-old/kernel
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Change how console scrolling works

Browse Source
This commit is contained in:
Mark
2019-12-30 22:32:41 +02:00
parent 8380cd3155
commit f9782965fc
1 changed files with 11 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files
sys/amd64/hw/con.c
+11 -8
View File
@@ -31,14 +31,12 @@ static void amd64_con_moveto(uint8_t row, uint8_t col) {
outb(0x3D5, (uint8_t) ((pos >> 8) & 0xFF));
}
static void amd64_con_scroll(void) {
if (y == 23) {
for (int i = 0; i < 22; ++i) {
memcpy(&con_buffer[i * 80], &con_buffer[(i + 1) * 80], 80 * 2);
}
memsetw(&con_buffer[22 * 80], ATTR_DEFAULT, 80);
y = 22;
static void amd64_scroll_down(void) {
for (int i = 0; i < 24; ++i) {
memcpy(&con_buffer[i * 80], &con_buffer[(i + 1) * 80], 80 * 2);
}
memsetw(&con_buffer[24 * 80], ATTR_DEFAULT, 80);
y = 24;
}
// I guess I could've implemented VT100 escape handling better, but
@@ -179,12 +177,18 @@ void amd64_con_putc(int c) {
if (x >= 80) {
++y;
x = 0;
if (y == 25) {
amd64_scroll_down();
}
}
} else {
switch (c) {
case '\n':
++y;
x = 0;
if (y == 25) {
amd64_scroll_down();
}
break;
default:
amd64_con_putc('?');
@@ -192,7 +196,6 @@ void amd64_con_putc(int c) {
}
}
amd64_con_moveto(y, x);
amd64_con_scroll();
break;
}
}