diff options
Diffstat (limited to 'kernel/input.rv')
| -rw-r--r-- | kernel/input.rv | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/kernel/input.rv b/kernel/input.rv index fde962d..d069521 100644 --- a/kernel/input.rv +++ b/kernel/input.rv @@ -14,6 +14,15 @@ fn pic_remap() do end fn pic_unmask(line) outb(0x21, inb(0x21) band (255 bxor (1 shl line))) +# 8253/8254 PIT channel 0, mode 3 (square wave) +# divisor 11931 -> ~100 Hz (1193182 / 11931) +# the ISR just counts ticks +fn pit_init() do + outb(0x43, 0x36) + outb(0x40, 11931 band 0xff) + outb(0x40, (11931 shr 8) band 0xff) +end + # she stroke my keys till i handle # no fr this is just a key stroke handler global sh = { line = "", shift = :false } |