| 1 |
/* |
| 2 |
* adb.cpp - ADB emulation (mouse/keyboard) |
| 3 |
* |
| 4 |
* Basilisk II (C) 1997-2002 Christian Bauer |
| 5 |
* |
| 6 |
* This program is free software; you can redistribute it and/or modify |
| 7 |
* it under the terms of the GNU General Public License as published by |
| 8 |
* the Free Software Foundation; either version 2 of the License, or |
| 9 |
* (at your option) any later version. |
| 10 |
* |
| 11 |
* This program is distributed in the hope that it will be useful, |
| 12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 |
* GNU General Public License for more details. |
| 15 |
* |
| 16 |
* You should have received a copy of the GNU General Public License |
| 17 |
* along with this program; if not, write to the Free Software |
| 18 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 |
*/ |
| 20 |
|
| 21 |
/* |
| 22 |
* SEE ALSO |
| 23 |
* Inside Macintosh: Devices, chapter 5 "ADB Manager" |
| 24 |
* Technote HW 01: "ADB - The Untold Story: Space Aliens Ate My Mouse" |
| 25 |
*/ |
| 26 |
|
| 27 |
#include <stdlib.h> |
| 28 |
|
| 29 |
#include "sysdeps.h" |
| 30 |
#include "cpu_emulation.h" |
| 31 |
#include "emul_op.h" |
| 32 |
#include "main.h" |
| 33 |
#include "prefs.h" |
| 34 |
#include "video.h" |
| 35 |
#include "adb.h" |
| 36 |
|
| 37 |
#define DEBUG 0 |
| 38 |
#include "debug.h" |
| 39 |
|
| 40 |
|
| 41 |
// Global variables |
| 42 |
static int mouse_x = 0, mouse_y = 0; // Mouse position |
| 43 |
static int old_mouse_x = 0, old_mouse_y = 0; |
| 44 |
static bool mouse_button[3] = {false, false, false}; // Mouse button states |
| 45 |
static bool old_mouse_button[3] = {false, false, false}; |
| 46 |
static bool relative_mouse = false; |
| 47 |
|
| 48 |
static uint8 key_states[16]; // Key states (Mac keycodes) |
| 49 |
#define MATRIX(code) (key_states[code >> 3] & (1 << (~code & 7))) |
| 50 |
|
| 51 |
// Keyboard event buffer (Mac keycodes with up/down flag) |
| 52 |
const int KEY_BUFFER_SIZE = 16; |
| 53 |
static uint8 key_buffer[KEY_BUFFER_SIZE]; |
| 54 |
static unsigned int key_read_ptr = 0, key_write_ptr = 0; |
| 55 |
|
| 56 |
static uint8 mouse_reg_3[2] = {0x63, 0x01}; // Mouse ADB register 3 |
| 57 |
|
| 58 |
static uint8 key_reg_2[2] = {0xff, 0xff}; // Keyboard ADB register 2 |
| 59 |
static uint8 key_reg_3[2] = {0x62, 0x05}; // Keyboard ADB register 3 |
| 60 |
|
| 61 |
static uint8 m_keyboard_type = 0x05; |
| 62 |
|
| 63 |
// ADB mouse motion lock (for platforms that use separate input thread) |
| 64 |
static B2_mutex *mouse_lock; |
| 65 |
|
| 66 |
|
| 67 |
/* |
| 68 |
* Initialize ADB emulation |
| 69 |
*/ |
| 70 |
|
| 71 |
void ADBInit(void) |
| 72 |
{ |
| 73 |
mouse_lock = B2_create_mutex(); |
| 74 |
m_keyboard_type = (uint8)PrefsFindInt32("keyboardtype"); |
| 75 |
key_reg_3[1] = m_keyboard_type; |
| 76 |
} |
| 77 |
|
| 78 |
|
| 79 |
/* |
| 80 |
* Exit ADB emulation |
| 81 |
*/ |
| 82 |
|
| 83 |
void ADBExit(void) |
| 84 |
{ |
| 85 |
if (mouse_lock) { |
| 86 |
B2_delete_mutex(mouse_lock); |
| 87 |
mouse_lock = NULL; |
| 88 |
} |
| 89 |
} |
| 90 |
|
| 91 |
|
| 92 |
/* |
| 93 |
* ADBOp() replacement |
| 94 |
*/ |
| 95 |
|
| 96 |
void ADBOp(uint8 op, uint8 *data) |
| 97 |
{ |
| 98 |
D(bug("ADBOp op %02x, data %02x %02x %02x\n", op, data[0], data[1], data[2])); |
| 99 |
|
| 100 |
// ADB reset? |
| 101 |
if ((op & 0x0f) == 0) { |
| 102 |
mouse_reg_3[0] = 0x63; |
| 103 |
mouse_reg_3[1] = 0x01; |
| 104 |
key_reg_2[0] = 0xff; |
| 105 |
key_reg_2[1] = 0xff; |
| 106 |
key_reg_3[0] = 0x62; |
| 107 |
key_reg_3[1] = m_keyboard_type; |
| 108 |
return; |
| 109 |
} |
| 110 |
|
| 111 |
// Cut op into fields |
| 112 |
uint8 adr = op >> 4; |
| 113 |
uint8 cmd = (op >> 2) & 3; |
| 114 |
uint8 reg = op & 3; |
| 115 |
|
| 116 |
// Check which device was addressed and act accordingly |
| 117 |
if (adr == (mouse_reg_3[0] & 0x0f)) { |
| 118 |
|
| 119 |
// Mouse |
| 120 |
if (cmd == 2) { |
| 121 |
|
| 122 |
// Listen |
| 123 |
switch (reg) { |
| 124 |
case 3: // Address/HandlerID |
| 125 |
if (data[2] == 0xfe) // Change address |
| 126 |
mouse_reg_3[0] = (mouse_reg_3[0] & 0xf0) | (data[1] & 0x0f); |
| 127 |
else if (data[2] == 1 || data[2] == 2 || data[2] == 4) // Change device handler ID |
| 128 |
mouse_reg_3[1] = data[2]; |
| 129 |
else if (data[2] == 0x00) // Change address and enable bit |
| 130 |
mouse_reg_3[0] = (mouse_reg_3[0] & 0xd0) | (data[1] & 0x2f); |
| 131 |
break; |
| 132 |
} |
| 133 |
|
| 134 |
} else if (cmd == 3) { |
| 135 |
|
| 136 |
// Talk |
| 137 |
switch (reg) { |
| 138 |
case 1: // Extended mouse protocol |
| 139 |
data[0] = 8; |
| 140 |
data[1] = 'a'; // Identifier |
| 141 |
data[2] = 'p'; |
| 142 |
data[3] = 'p'; |
| 143 |
data[4] = 'l'; |
| 144 |
data[5] = 300 >> 8; // Resolution (dpi) |
| 145 |
data[6] = 300 & 0xff; |
| 146 |
data[7] = 1; // Class (mouse) |
| 147 |
data[8] = 3; // Number of buttons |
| 148 |
break; |
| 149 |
case 3: // Address/HandlerID |
| 150 |
data[0] = 2; |
| 151 |
data[1] = mouse_reg_3[0] & 0xf0 | (rand() & 0x0f); |
| 152 |
data[2] = mouse_reg_3[1]; |
| 153 |
break; |
| 154 |
default: |
| 155 |
data[0] = 0; |
| 156 |
break; |
| 157 |
} |
| 158 |
} |
| 159 |
D(bug(" mouse reg 3 %02x%02x\n", mouse_reg_3[0], mouse_reg_3[1])); |
| 160 |
|
| 161 |
} else if (adr == (key_reg_3[0] & 0x0f)) { |
| 162 |
|
| 163 |
// Keyboard |
| 164 |
if (cmd == 2) { |
| 165 |
|
| 166 |
// Listen |
| 167 |
switch (reg) { |
| 168 |
case 2: // LEDs/Modifiers |
| 169 |
key_reg_2[0] = data[1]; |
| 170 |
key_reg_2[1] = data[2]; |
| 171 |
break; |
| 172 |
case 3: // Address/HandlerID |
| 173 |
if (data[2] == 0xfe) // Change address |
| 174 |
key_reg_3[0] = (key_reg_3[0] & 0xf0) | (data[1] & 0x0f); |
| 175 |
else if (data[2] == 0x00) // Change address and enable bit |
| 176 |
key_reg_3[0] = (key_reg_3[0] & 0xd0) | (data[1] & 0x2f); |
| 177 |
break; |
| 178 |
} |
| 179 |
|
| 180 |
} else if (cmd == 3) { |
| 181 |
|
| 182 |
// Talk |
| 183 |
switch (reg) { |
| 184 |
case 2: { // LEDs/Modifiers |
| 185 |
uint8 reg2hi = 0xff; |
| 186 |
uint8 reg2lo = key_reg_2[1] | 0xf8; |
| 187 |
if (MATRIX(0x6b)) // Scroll Lock |
| 188 |
reg2lo &= ~0x40; |
| 189 |
if (MATRIX(0x47)) // Num Lock |
| 190 |
reg2lo &= ~0x80; |
| 191 |
if (MATRIX(0x37)) // Command |
| 192 |
reg2hi &= ~0x01; |
| 193 |
if (MATRIX(0x3a)) // Option |
| 194 |
reg2hi &= ~0x02; |
| 195 |
if (MATRIX(0x38)) // Shift |
| 196 |
reg2hi &= ~0x04; |
| 197 |
if (MATRIX(0x36)) // Control |
| 198 |
reg2hi &= ~0x08; |
| 199 |
if (MATRIX(0x39)) // Caps Lock |
| 200 |
reg2hi &= ~0x20; |
| 201 |
if (MATRIX(0x75)) // Delete |
| 202 |
reg2hi &= ~0x40; |
| 203 |
data[0] = 2; |
| 204 |
data[1] = reg2hi; |
| 205 |
data[2] = reg2lo; |
| 206 |
break; |
| 207 |
} |
| 208 |
case 3: // Address/HandlerID |
| 209 |
data[0] = 2; |
| 210 |
data[1] = key_reg_3[0] & 0xf0 | (rand() & 0x0f); |
| 211 |
data[2] = key_reg_3[1]; |
| 212 |
break; |
| 213 |
default: |
| 214 |
data[0] = 0; |
| 215 |
break; |
| 216 |
} |
| 217 |
} |
| 218 |
D(bug(" keyboard reg 3 %02x%02x\n", key_reg_3[0], key_reg_3[1])); |
| 219 |
|
| 220 |
} else // Unknown address |
| 221 |
if (cmd == 3) |
| 222 |
data[0] = 0; // Talk: 0 bytes of data |
| 223 |
} |
| 224 |
|
| 225 |
|
| 226 |
/* |
| 227 |
* Mouse was moved (x/y are absolute or relative, depending on ADBSetRelMouseMode()) |
| 228 |
*/ |
| 229 |
|
| 230 |
void ADBMouseMoved(int x, int y) |
| 231 |
{ |
| 232 |
B2_lock_mutex(mouse_lock); |
| 233 |
if (relative_mouse) { |
| 234 |
mouse_x += x; mouse_y += y; |
| 235 |
} else { |
| 236 |
mouse_x = x; mouse_y = y; |
| 237 |
} |
| 238 |
B2_unlock_mutex(mouse_lock); |
| 239 |
SetInterruptFlag(INTFLAG_ADB); |
| 240 |
TriggerInterrupt(); |
| 241 |
} |
| 242 |
|
| 243 |
|
| 244 |
/* |
| 245 |
* Mouse button pressed |
| 246 |
*/ |
| 247 |
|
| 248 |
void ADBMouseDown(int button) |
| 249 |
{ |
| 250 |
mouse_button[button] = true; |
| 251 |
SetInterruptFlag(INTFLAG_ADB); |
| 252 |
TriggerInterrupt(); |
| 253 |
} |
| 254 |
|
| 255 |
|
| 256 |
/* |
| 257 |
* Mouse button released |
| 258 |
*/ |
| 259 |
|
| 260 |
void ADBMouseUp(int button) |
| 261 |
{ |
| 262 |
mouse_button[button] = false; |
| 263 |
SetInterruptFlag(INTFLAG_ADB); |
| 264 |
TriggerInterrupt(); |
| 265 |
} |
| 266 |
|
| 267 |
|
| 268 |
/* |
| 269 |
* Set mouse mode (absolute or relative) |
| 270 |
*/ |
| 271 |
|
| 272 |
void ADBSetRelMouseMode(bool relative) |
| 273 |
{ |
| 274 |
if (relative_mouse != relative) { |
| 275 |
relative_mouse = relative; |
| 276 |
mouse_x = mouse_y = 0; |
| 277 |
} |
| 278 |
} |
| 279 |
|
| 280 |
|
| 281 |
/* |
| 282 |
* Key pressed ("code" is the Mac key code) |
| 283 |
*/ |
| 284 |
|
| 285 |
void ADBKeyDown(int code) |
| 286 |
{ |
| 287 |
// Add keycode to buffer |
| 288 |
key_buffer[key_write_ptr] = code; |
| 289 |
key_write_ptr = (key_write_ptr + 1) % KEY_BUFFER_SIZE; |
| 290 |
|
| 291 |
// Set key in matrix |
| 292 |
key_states[code >> 3] |= (1 << (~code & 7)); |
| 293 |
|
| 294 |
// Trigger interrupt |
| 295 |
SetInterruptFlag(INTFLAG_ADB); |
| 296 |
TriggerInterrupt(); |
| 297 |
} |
| 298 |
|
| 299 |
|
| 300 |
/* |
| 301 |
* Key released ("code" is the Mac key code) |
| 302 |
*/ |
| 303 |
|
| 304 |
void ADBKeyUp(int code) |
| 305 |
{ |
| 306 |
// Add keycode to buffer |
| 307 |
key_buffer[key_write_ptr] = code | 0x80; // Key-up flag |
| 308 |
key_write_ptr = (key_write_ptr + 1) % KEY_BUFFER_SIZE; |
| 309 |
|
| 310 |
// Clear key in matrix |
| 311 |
key_states[code >> 3] &= ~(1 << (~code & 7)); |
| 312 |
|
| 313 |
// Trigger interrupt |
| 314 |
SetInterruptFlag(INTFLAG_ADB); |
| 315 |
TriggerInterrupt(); |
| 316 |
} |
| 317 |
|
| 318 |
|
| 319 |
/* |
| 320 |
* ADB interrupt function (executed as part of 60Hz interrupt) |
| 321 |
*/ |
| 322 |
|
| 323 |
void ADBInterrupt(void) |
| 324 |
{ |
| 325 |
M68kRegisters r; |
| 326 |
|
| 327 |
// Return if ADB is not initialized |
| 328 |
uint32 adb_base = ReadMacInt32(0xcf8); |
| 329 |
if (!adb_base || adb_base == 0xffffffff) |
| 330 |
return; |
| 331 |
uint32 tmp_data = adb_base + 0x163; // Temporary storage for faked ADB data |
| 332 |
|
| 333 |
// Get mouse state |
| 334 |
B2_lock_mutex(mouse_lock); |
| 335 |
int mx = mouse_x; |
| 336 |
int my = mouse_y; |
| 337 |
if (relative_mouse) |
| 338 |
mouse_x = mouse_y = 0; |
| 339 |
int mb[3] = {mouse_button[0], mouse_button[1], mouse_button[2]}; |
| 340 |
B2_unlock_mutex(mouse_lock); |
| 341 |
|
| 342 |
uint32 key_base = adb_base + 4; |
| 343 |
uint32 mouse_base = adb_base + 16; |
| 344 |
|
| 345 |
if (relative_mouse) { |
| 346 |
|
| 347 |
// Mouse movement (relative) and buttons |
| 348 |
if (mx != 0 || my != 0 || mb[0] != old_mouse_button[0] || mb[1] != old_mouse_button[1] || mb[2] != old_mouse_button[2]) { |
| 349 |
|
| 350 |
// Call mouse ADB handler |
| 351 |
if (mouse_reg_3[1] == 4) { |
| 352 |
// Extended mouse protocol |
| 353 |
WriteMacInt8(tmp_data, 3); |
| 354 |
WriteMacInt8(tmp_data + 1, (my & 0x7f) | (mb[0] ? 0 : 0x80)); |
| 355 |
WriteMacInt8(tmp_data + 2, (mx & 0x7f) | (mb[1] ? 0 : 0x80)); |
| 356 |
WriteMacInt8(tmp_data + 3, ((my >> 3) & 0x70) | ((mx >> 7) & 0x07) | (mb[2] ? 0x08 : 0x88)); |
| 357 |
} else { |
| 358 |
// 100/200 dpi mode |
| 359 |
WriteMacInt8(tmp_data, 2); |
| 360 |
WriteMacInt8(tmp_data + 1, (my & 0x7f) | (mb[0] ? 0 : 0x80)); |
| 361 |
WriteMacInt8(tmp_data + 2, (mx & 0x7f) | (mb[1] ? 0 : 0x80)); |
| 362 |
} |
| 363 |
r.a[0] = tmp_data; |
| 364 |
r.a[1] = ReadMacInt32(mouse_base); |
| 365 |
r.a[2] = ReadMacInt32(mouse_base + 4); |
| 366 |
r.a[3] = adb_base; |
| 367 |
r.d[0] = (mouse_reg_3[0] << 4) | 0x0c; // Talk 0 |
| 368 |
Execute68k(r.a[1], &r); |
| 369 |
|
| 370 |
old_mouse_button[0] = mb[0]; |
| 371 |
old_mouse_button[1] = mb[1]; |
| 372 |
old_mouse_button[2] = mb[2]; |
| 373 |
} |
| 374 |
|
| 375 |
} else { |
| 376 |
|
| 377 |
// Update mouse position (absolute) |
| 378 |
if (mx != old_mouse_x || my != old_mouse_y) { |
| 379 |
#ifdef POWERPC_ROM |
| 380 |
static const uint8 proc[] = { |
| 381 |
0x2f, 0x08, // move.l a0,-(sp) |
| 382 |
0x2f, 0x00, // move.l d0,-(sp) |
| 383 |
0x2f, 0x01, // move.l d1,-(sp) |
| 384 |
0x70, 0x01, // moveq #1,d0 (MoveTo) |
| 385 |
0xaa, 0xdb, // CursorDeviceDispatch |
| 386 |
M68K_RTS >> 8, M68K_RTS & 0xff |
| 387 |
}; |
| 388 |
r.a[0] = ReadMacInt32(mouse_base + 4); |
| 389 |
r.d[0] = mx; |
| 390 |
r.d[1] = my; |
| 391 |
Execute68k((uint32)proc, &r); |
| 392 |
#else |
| 393 |
WriteMacInt16(0x82a, mx); |
| 394 |
WriteMacInt16(0x828, my); |
| 395 |
WriteMacInt16(0x82e, mx); |
| 396 |
WriteMacInt16(0x82c, my); |
| 397 |
WriteMacInt8(0x8ce, ReadMacInt8(0x8cf)); // CrsrCouple -> CrsrNew |
| 398 |
#endif |
| 399 |
old_mouse_x = mx; |
| 400 |
old_mouse_y = my; |
| 401 |
} |
| 402 |
|
| 403 |
// Send mouse button events |
| 404 |
if (mb[0] != old_mouse_button[0] || mb[1] != old_mouse_button[1] || mb[2] != old_mouse_button[2]) { |
| 405 |
uint32 mouse_base = adb_base + 16; |
| 406 |
|
| 407 |
// Call mouse ADB handler |
| 408 |
if (mouse_reg_3[1] == 4) { |
| 409 |
// Extended mouse protocol |
| 410 |
WriteMacInt8(tmp_data, 3); |
| 411 |
WriteMacInt8(tmp_data + 1, mb[0] ? 0 : 0x80); |
| 412 |
WriteMacInt8(tmp_data + 2, mb[1] ? 0 : 0x80); |
| 413 |
WriteMacInt8(tmp_data + 3, mb[2] ? 0x08 : 0x88); |
| 414 |
} else { |
| 415 |
// 100/200 dpi mode |
| 416 |
WriteMacInt8(tmp_data, 2); |
| 417 |
WriteMacInt8(tmp_data + 1, mb[0] ? 0 : 0x80); |
| 418 |
WriteMacInt8(tmp_data + 2, mb[1] ? 0 : 0x80); |
| 419 |
} |
| 420 |
r.a[0] = tmp_data; |
| 421 |
r.a[1] = ReadMacInt32(mouse_base); |
| 422 |
r.a[2] = ReadMacInt32(mouse_base + 4); |
| 423 |
r.a[3] = adb_base; |
| 424 |
r.d[0] = (mouse_reg_3[0] << 4) | 0x0c; // Talk 0 |
| 425 |
Execute68k(r.a[1], &r); |
| 426 |
|
| 427 |
old_mouse_button[0] = mb[0]; |
| 428 |
old_mouse_button[1] = mb[1]; |
| 429 |
old_mouse_button[2] = mb[2]; |
| 430 |
} |
| 431 |
} |
| 432 |
|
| 433 |
// Process accumulated keyboard events |
| 434 |
while (key_read_ptr != key_write_ptr) { |
| 435 |
|
| 436 |
// Read keyboard event |
| 437 |
uint8 mac_code = key_buffer[key_read_ptr]; |
| 438 |
key_read_ptr = (key_read_ptr + 1) % KEY_BUFFER_SIZE; |
| 439 |
|
| 440 |
// Call keyboard ADB handler |
| 441 |
WriteMacInt8(tmp_data, 2); |
| 442 |
WriteMacInt8(tmp_data + 1, mac_code); |
| 443 |
WriteMacInt8(tmp_data + 2, mac_code == 0x7f ? 0x7f : 0xff); // Power key is special |
| 444 |
r.a[0] = tmp_data; |
| 445 |
r.a[1] = ReadMacInt32(key_base); |
| 446 |
r.a[2] = ReadMacInt32(key_base + 4); |
| 447 |
r.a[3] = adb_base; |
| 448 |
r.d[0] = (key_reg_3[0] << 4) | 0x0c; // Talk 0 |
| 449 |
Execute68k(r.a[1], &r); |
| 450 |
} |
| 451 |
|
| 452 |
// Clear temporary data |
| 453 |
WriteMacInt32(tmp_data, 0); |
| 454 |
WriteMacInt32(tmp_data + 4, 0); |
| 455 |
} |
