2 * Copyright (c) 1998 Robert Nordier
5 * Redistribution and use in source and binary forms are freely
6 * permitted provided that the above copyright notice and this
7 * paragraph and the following disclaimer are duplicated in all
10 * This software is provided "AS IS" and without any express or
11 * implied warranties, including, without limitation, the implied
12 * warranties of merchantability and fitness for a particular
16 #include <sys/cdefs.h>
17 __FBSDID("$FreeBSD$");
19 #include <sys/param.h>
21 #include <machine/psl.h>
30 #define SECOND 18 /* Circa that many ticks in a second. */
32 uint8_t ioctrl = IO_KEYBOARD;
40 v86.eax = 0xe00 | (c & 0xff);
49 if (ioctrl & IO_KEYBOARD)
51 if (ioctrl & IO_SERIAL)
85 if (OPT_CHECK(RBX_NOINTR))
88 if (ioctrl & IO_KEYBOARD && getc(1))
89 return (fn ? 1 : getc(0));
90 if (ioctrl & IO_SERIAL && sio_ischar())
91 return (fn ? 1 : sio_getc());
106 keyhit(unsigned int secs)
110 if (OPT_CHECK(RBX_NOINTR))
116 * The extra comparison is an attempt to work around
117 * what appears to be a bug in QEMU and Bochs. Both emulators
118 * sometimes report a key-press with scancode one and ascii zero
119 * when no such key is pressed in reality. As far as I can tell,
120 * this only happens shortly after a reboot.
123 if (c != 0 && c != 0x0100)
126 t1 = *(uint32_t *)PTOV(0x46c);
129 if (t1 < t0 || t1 >= t0 + secs)
137 getstr(char *cmdstr, size_t cmdstrsize)
146 /* Translate some extended codes. */
148 case 0x5300: /* delete */
169 if (c >= 0x20 && c <= 0x7e) {
170 if (s - cmdstr < cmdstrsize - 1)