diff options
Diffstat (limited to 'kernel/kernel.c')
| -rw-r--r-- | kernel/kernel.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/kernel/kernel.c b/kernel/kernel.c index d81c8a7..6b7f077 100644 --- a/kernel/kernel.c +++ b/kernel/kernel.c @@ -1,5 +1,6 @@ #include "tty.h" #include "stdlib.h" +#include "io_ports.h" /* this only work for the 32-bit ix86 targets. */ #if !defined(__i386__) @@ -34,5 +35,22 @@ void kernel_main() test(strncmp("abc", "abc", 8) == 0); test(strncmp("abca", "abcb", 3) == 0); + + tty_puts("inw : "); + while(true) { + int ret = inw(0x03F8); + if (ret == 97) { + tty_puts(" ok\n"); + break; + } + } + tty_puts("outw :\n"); + outw(0x03F8, 'h'); + outw(0x03F8, 'e'); + outw(0x03F8, 'l'); + outw(0x03F8, 'l'); + outw(0x03F8, 'o'); + outw(0x03F8, '\0'); + tty_puts("done.\n"); } |