3 * Copyright (C) 1998 Brainchild Design - http://brainchilddesign.com/
5 * Copyright (C) 2002 Florian Schulze - crow@icculus.org
7 * Portions of this code are from the MPEG software simulation group
8 * idct implementation. This code will be replaced with a new
11 * This file is part of Jump'n'Bump.
13 * Jump'n'Bump is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
18 * Jump'n'Bump is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
35 volatile char keyb[256];
36 volatile char last_keys[50];
38 unsigned char scancode2ascii[256] = {
39 0, 0, 49, 50, 51, 52, 53, 54, 55, 56, /* 0-9 */
40 57, 48, 45, 0, 0, 0, 113, 119, 101, 114, /* 10-19 */
41 116, 121, 117, 105, 111, 112, 0, 0, 0, 0, /* 20-29 */
42 97, 115, 100, 102, 103, 104, 106, 107, 108, 0, /* 30-39 */
43 0, 0, 0, 0, 122, 120, 99, 118, 98, 110, /* 40-49 */
44 109, 44, 46, 47, 0, 0, 0, 32, 0, 0, /* 50-59 */
45 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
46 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
47 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
48 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
49 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
50 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
51 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
52 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
53 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
54 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
55 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
56 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
57 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
58 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
59 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
60 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
61 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
62 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
63 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
67 _go32_dpmi_seginfo old_keyb_handler_seginfo, new_keyb_handler_seginfo;
82 if ((key & 0x80) == 0) {
84 for (c1 = 48; c1 > 0; c1--)
85 last_keys[c1] = last_keys[c1 - 1];
86 last_keys[0] = scancode2ascii[key & 0x7f];
90 if ((key & 0x80) == 0) {
91 keyb[(key & 0x7f) + 0x80] = 1;
92 for (c1 = 48; c1 > 0; c1--)
93 last_keys[c1] = last_keys[c1 - 1];
94 last_keys[0] = scancode2ascii[(key & 0x7f) + 0x80];
96 keyb[(key & 0x7f) + 0x80] = 0;
102 outportb(0x20, 0x20);
106 void keyb_handler_end()
111 char hook_keyb_handler(void)
114 if (keyb_handler_info.enabled == 0) {
115 _go32_dpmi_lock_data((char *) &keyb, sizeof(keyb));
116 _go32_dpmi_lock_code(keyb_handler, (unsigned long) keyb_handler_end - (unsigned long) keyb_handler);
117 _go32_dpmi_get_protected_mode_interrupt_vector(9, &old_keyb_handler_seginfo);
118 new_keyb_handler_seginfo.pm_offset = (int) keyb_handler;
119 if (_go32_dpmi_allocate_iret_wrapper(&new_keyb_handler_seginfo) != 0)
121 if (_go32_dpmi_set_protected_mode_interrupt_vector(9, &new_keyb_handler_seginfo) != 0) {
122 _go32_dpmi_free_iret_wrapper(&new_keyb_handler_seginfo);
125 keyb_handler_info.enabled = 1;
126 memset(last_keys, 0, sizeof(last_keys));
134 void remove_keyb_handler(void)
137 if (keyb_handler_info.enabled == 1) {
138 _go32_dpmi_set_protected_mode_interrupt_vector(9, &old_keyb_handler_seginfo);
139 _go32_dpmi_free_iret_wrapper(&new_keyb_handler_seginfo);
140 keyb_handler_info.enabled = 0;
146 char key_pressed(unsigned char key)