| 1 | /*
|
|---|
| 2 | * Copyright (C) 2006-2017 Oracle Corporation
|
|---|
| 3 | *
|
|---|
| 4 | * This file is part of VirtualBox Open Source Edition (OSE), as
|
|---|
| 5 | * available from http://www.alldomusa.eu.org. This file is free software;
|
|---|
| 6 | * you can redistribute it and/or modify it under the terms of the GNU
|
|---|
| 7 | * General Public License (GPL) as published by the Free Software
|
|---|
| 8 | * Foundation, in version 2 as it comes in the "COPYING" file of the
|
|---|
| 9 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
|---|
| 10 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
|---|
| 11 | *
|
|---|
| 12 | * This code is based on:
|
|---|
| 13 | *
|
|---|
| 14 | * ROM BIOS for use with Bochs/Plex86/QEMU emulation environment
|
|---|
| 15 | *
|
|---|
| 16 | * Copyright (C) 2002 MandrakeSoft S.A.
|
|---|
| 17 | *
|
|---|
| 18 | * MandrakeSoft S.A.
|
|---|
| 19 | * 43, rue d'Aboukir
|
|---|
| 20 | * 75002 Paris - France
|
|---|
| 21 | * http://www.linux-mandrake.com/
|
|---|
| 22 | * http://www.mandrakesoft.com/
|
|---|
| 23 | *
|
|---|
| 24 | * This library is free software; you can redistribute it and/or
|
|---|
| 25 | * modify it under the terms of the GNU Lesser General Public
|
|---|
| 26 | * License as published by the Free Software Foundation; either
|
|---|
| 27 | * version 2 of the License, or (at your option) any later version.
|
|---|
| 28 | *
|
|---|
| 29 | * This library is distributed in the hope that it will be useful,
|
|---|
| 30 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|---|
| 31 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|---|
| 32 | * Lesser General Public License for more details.
|
|---|
| 33 | *
|
|---|
| 34 | * You should have received a copy of the GNU Lesser General Public
|
|---|
| 35 | * License along with this library; if not, write to the Free Software
|
|---|
| 36 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|---|
| 37 | *
|
|---|
| 38 | */
|
|---|
| 39 |
|
|---|
| 40 |
|
|---|
| 41 | #include <stdint.h>
|
|---|
| 42 | #include "biosint.h"
|
|---|
| 43 | #include "inlines.h"
|
|---|
| 44 |
|
|---|
| 45 |
|
|---|
| 46 | #if DEBUG_INT15_MS
|
|---|
| 47 | # define BX_DEBUG_INT15_MS(...) BX_DEBUG(__VA_ARGS__)
|
|---|
| 48 | #else
|
|---|
| 49 | # define BX_DEBUG_INT15_MS(...)
|
|---|
| 50 | #endif
|
|---|
| 51 |
|
|---|
| 52 | #if DEBUG_INT74
|
|---|
| 53 | # define BX_DEBUG_INT74(...) BX_DEBUG(__VA_ARGS__)
|
|---|
| 54 | #else
|
|---|
| 55 | # define BX_DEBUG_INT74(...)
|
|---|
| 56 | #endif
|
|---|
| 57 |
|
|---|
| 58 | #if BX_USE_PS2_MOUSE
|
|---|
| 59 |
|
|---|
| 60 | static const char panic_msg_keyb_buffer_full[] = "%s: keyboard input buffer full\n";
|
|---|
| 61 |
|
|---|
| 62 | uint8_t send_to_mouse_ctrl(uint8_t sendbyte)
|
|---|
| 63 | {
|
|---|
| 64 | BX_DEBUG_INT15_MS("send %02x to mouse:\n", sendbyte);
|
|---|
| 65 | // wait for chance to write to ctrl
|
|---|
| 66 | if (inb(0x64) & 0x02)
|
|---|
| 67 | BX_PANIC(panic_msg_keyb_buffer_full,"sendmouse");
|
|---|
| 68 | outb(0x64, 0xD4);
|
|---|
| 69 | outb(0x60, sendbyte);
|
|---|
| 70 | return(0);
|
|---|
| 71 | }
|
|---|
| 72 |
|
|---|
| 73 |
|
|---|
| 74 | uint8_t get_mouse_data(uint8_t __far *data)
|
|---|
| 75 | {
|
|---|
| 76 | int retries = 10000; /* ~150ms timeout */
|
|---|
| 77 | uint8_t response;
|
|---|
| 78 |
|
|---|
| 79 | while ((inb(0x64) & 0x21) != 0x21 && retries)
|
|---|
| 80 | {
|
|---|
| 81 | /* Wait until the 15us refresh counter toggles. */
|
|---|
| 82 | response = inb(0x61) & 0x10;
|
|---|
| 83 | while((inb(0x61) & 0x10) == response)
|
|---|
| 84 | ;
|
|---|
| 85 | --retries;
|
|---|
| 86 | }
|
|---|
| 87 |
|
|---|
| 88 | if (!retries)
|
|---|
| 89 | return(1);
|
|---|
| 90 |
|
|---|
| 91 | response = inb(0x60);
|
|---|
| 92 | *data = response;
|
|---|
| 93 | return(0);
|
|---|
| 94 | }
|
|---|
| 95 |
|
|---|
| 96 | void set_kbd_command_byte(uint8_t command_byte)
|
|---|
| 97 | {
|
|---|
| 98 | if (inb(0x64) & 0x02)
|
|---|
| 99 | BX_PANIC(panic_msg_keyb_buffer_full,"setkbdcomm");
|
|---|
| 100 |
|
|---|
| 101 | outb(0x64, 0x60); // write command byte
|
|---|
| 102 | outb(0x60, command_byte);
|
|---|
| 103 | }
|
|---|
| 104 |
|
|---|
| 105 |
|
|---|
| 106 | void BIOSCALL int74_function(volatile uint16_t make_farcall, volatile uint16_t Z,
|
|---|
| 107 | volatile uint16_t Y, volatile uint16_t X, volatile uint16_t status)
|
|---|
| 108 | {
|
|---|
| 109 | uint16_t ebda_seg=read_word(0x0040,0x000E);
|
|---|
| 110 | uint8_t in_byte, index, package_count;
|
|---|
| 111 | uint8_t mouse_flags_1, mouse_flags_2;
|
|---|
| 112 |
|
|---|
| 113 | BX_DEBUG_INT74("entering int74_function\n");
|
|---|
| 114 | make_farcall = 0;
|
|---|
| 115 |
|
|---|
| 116 | in_byte = inb(0x64);
|
|---|
| 117 | if ( (in_byte & 0x21) != 0x21 ) {
|
|---|
| 118 | return;
|
|---|
| 119 | }
|
|---|
| 120 | in_byte = inb(0x60);
|
|---|
| 121 | BX_DEBUG_INT74("int74: read byte %02x\n", in_byte);
|
|---|
| 122 |
|
|---|
| 123 | mouse_flags_1 = read_byte(ebda_seg, 0x0026);
|
|---|
| 124 | mouse_flags_2 = read_byte(ebda_seg, 0x0027);
|
|---|
| 125 |
|
|---|
| 126 | if ( (mouse_flags_2 & 0x80) != 0x80 ) {
|
|---|
| 127 | return;
|
|---|
| 128 | }
|
|---|
| 129 |
|
|---|
| 130 | package_count = mouse_flags_2 & 0x07;
|
|---|
| 131 | index = mouse_flags_1 & 0x07;
|
|---|
| 132 | write_byte(ebda_seg, 0x28 + index, in_byte);
|
|---|
| 133 |
|
|---|
| 134 | if ( index >= package_count ) {
|
|---|
| 135 | BX_DEBUG_INT74("int74_function: make_farcall=1\n");
|
|---|
| 136 | status = read_byte(ebda_seg, 0x0028 + 0);
|
|---|
| 137 | X = read_byte(ebda_seg, 0x0028 + 1);
|
|---|
| 138 | Y = read_byte(ebda_seg, 0x0028 + 2);
|
|---|
| 139 | Z = 0;
|
|---|
| 140 | mouse_flags_1 = 0;
|
|---|
| 141 | // check if far call handler installed
|
|---|
| 142 | if (mouse_flags_2 & 0x80)
|
|---|
| 143 | make_farcall = 1;
|
|---|
| 144 | }
|
|---|
| 145 | else {
|
|---|
| 146 | mouse_flags_1++;
|
|---|
| 147 | }
|
|---|
| 148 | write_byte(ebda_seg, 0x0026, mouse_flags_1);
|
|---|
| 149 | }
|
|---|
| 150 |
|
|---|
| 151 | void BIOSCALL int15_function_mouse(pusha_regs_t regs, uint16_t ES, uint16_t DS, volatile uint16_t FLAGS)
|
|---|
| 152 | {
|
|---|
| 153 | uint16_t ebda_seg=read_word(0x0040,0x000E);
|
|---|
| 154 | uint8_t mouse_flags_1, mouse_flags_2;
|
|---|
| 155 | uint16_t mouse_driver_seg;
|
|---|
| 156 | uint16_t mouse_driver_offset;
|
|---|
| 157 | uint8_t mouse_cmd;
|
|---|
| 158 | uint8_t ret, mouse_data1, mouse_data2, mouse_data3;
|
|---|
| 159 |
|
|---|
| 160 | BX_DEBUG_INT15_MS("int15 AX=%04x\n",regs.u.r16.ax);
|
|---|
| 161 |
|
|---|
| 162 | // Return Codes status in AH
|
|---|
| 163 | // =========================
|
|---|
| 164 | // 00: success
|
|---|
| 165 | // 01: invalid subfunction (AL > 7)
|
|---|
| 166 | // 02: invalid input value (out of allowable range)
|
|---|
| 167 | // 03: interface error
|
|---|
| 168 | // 04: resend command received from mouse controller,
|
|---|
| 169 | // device driver should attempt command again
|
|---|
| 170 | // 05: cannot enable mouse, since no far call has been installed
|
|---|
| 171 | // 80/86: mouse service not implemented
|
|---|
| 172 |
|
|---|
| 173 | if (regs.u.r8.al > 7) {
|
|---|
| 174 | BX_DEBUG_INT15_MS("unsupported subfn\n");
|
|---|
| 175 | // invalid function
|
|---|
| 176 | SET_CF();
|
|---|
| 177 | regs.u.r8.ah = 1;
|
|---|
| 178 | return;
|
|---|
| 179 | }
|
|---|
| 180 |
|
|---|
| 181 | // Valid subfn; disable AUX input and IRQ12, assume no error
|
|---|
| 182 | set_kbd_command_byte(0x65);
|
|---|
| 183 | CLEAR_CF();
|
|---|
| 184 | regs.u.r8.ah = 0;
|
|---|
| 185 |
|
|---|
| 186 | switch (regs.u.r8.al) {
|
|---|
| 187 | case 0: // Disable/Enable Mouse
|
|---|
| 188 | BX_DEBUG_INT15_MS("case 0: ");
|
|---|
| 189 | if (regs.u.r8.bh > 1) {
|
|---|
| 190 | BX_DEBUG_INT15_MS("INT 15h C2 AL=0, BH=%02x\n", (unsigned) regs.u.r8.bh);
|
|---|
| 191 | // invalid subfunction
|
|---|
| 192 | SET_CF();
|
|---|
| 193 | regs.u.r8.ah = 1;
|
|---|
| 194 | break;
|
|---|
| 195 | }
|
|---|
| 196 | mouse_flags_2 = read_byte(ebda_seg, 0x0027);
|
|---|
| 197 | if ( (mouse_flags_2 & 0x80) == 0 ) {
|
|---|
| 198 | BX_DEBUG_INT15_MS("INT 15h C2 Enable/Disable Mouse, no far call handler\n");
|
|---|
| 199 | SET_CF();
|
|---|
| 200 | regs.u.r8.ah = 5; // no far call installed
|
|---|
| 201 | break;
|
|---|
| 202 | }
|
|---|
| 203 | if (regs.u.r8.bh == 0) {
|
|---|
| 204 | BX_DEBUG_INT15_MS("Disable Mouse\n");
|
|---|
| 205 | mouse_cmd = 0xF5; // disable mouse command
|
|---|
| 206 | } else {
|
|---|
| 207 | BX_DEBUG_INT15_MS("Enable Mouse\n");
|
|---|
| 208 | mouse_cmd = 0xF4; // enable mouse command
|
|---|
| 209 | }
|
|---|
| 210 |
|
|---|
| 211 | ret = send_to_mouse_ctrl(mouse_cmd); // disable mouse command
|
|---|
| 212 | if (ret == 0) {
|
|---|
| 213 | ret = get_mouse_data(&mouse_data1);
|
|---|
| 214 | if ( (ret == 0) || (mouse_data1 == 0xFA) ) {
|
|---|
| 215 | // success
|
|---|
| 216 | break;
|
|---|
| 217 | }
|
|---|
| 218 | }
|
|---|
| 219 |
|
|---|
| 220 | // interface error
|
|---|
| 221 | SET_CF();
|
|---|
| 222 | regs.u.r8.ah = 3;
|
|---|
| 223 | break;
|
|---|
| 224 |
|
|---|
| 225 | case 5: // Initialize Mouse
|
|---|
| 226 | // Valid package sizes are 1 to 8
|
|---|
| 227 | if ( (regs.u.r8.bh < 1) || (regs.u.r8.bh > 8) ) {
|
|---|
| 228 | SET_CF();
|
|---|
| 229 | regs.u.r8.ah = 2; // invalid input
|
|---|
| 230 | break;
|
|---|
| 231 | }
|
|---|
| 232 | mouse_flags_2 = read_byte(ebda_seg, 0x0027);
|
|---|
| 233 | mouse_flags_2 = (mouse_flags_2 & 0xf8) | (regs.u.r8.bh - 1);
|
|---|
| 234 | write_byte(ebda_seg, 0x0027, mouse_flags_2);
|
|---|
| 235 | // fall through!
|
|---|
| 236 |
|
|---|
| 237 | case 1: // Reset Mouse
|
|---|
| 238 | BX_DEBUG_INT15_MS("case 1 or 5:\n");
|
|---|
| 239 | // clear current package byte index
|
|---|
| 240 | mouse_flags_1 = read_byte(ebda_seg, 0x0026);
|
|---|
| 241 | mouse_flags_1 = mouse_flags_1 & 0xf8;
|
|---|
| 242 | write_byte(ebda_seg, 0x0026, mouse_flags_1);
|
|---|
| 243 | ret = send_to_mouse_ctrl(0xFF); // reset mouse command
|
|---|
| 244 | if (ret == 0) {
|
|---|
| 245 | ret = get_mouse_data(&mouse_data3);
|
|---|
| 246 | // if no mouse attached, it will return RESEND
|
|---|
| 247 | if (mouse_data3 == 0xfe) {
|
|---|
| 248 | SET_CF();
|
|---|
| 249 | regs.u.r8.ah = 4; // resend
|
|---|
| 250 | break;
|
|---|
| 251 | }
|
|---|
| 252 | if (mouse_data3 != 0xfa)
|
|---|
| 253 | BX_PANIC("Mouse reset returned %02x (should be ack)\n", (unsigned)mouse_data3);
|
|---|
| 254 | if ( ret == 0 ) {
|
|---|
| 255 | ret = get_mouse_data(&mouse_data1);
|
|---|
| 256 | if ( ret == 0 ) {
|
|---|
| 257 | ret = get_mouse_data(&mouse_data2);
|
|---|
| 258 | if ( ret == 0 ) {
|
|---|
| 259 | // success
|
|---|
| 260 | regs.u.r8.bl = mouse_data1;
|
|---|
| 261 | regs.u.r8.bh = mouse_data2;
|
|---|
| 262 | break;
|
|---|
| 263 | }
|
|---|
| 264 | }
|
|---|
| 265 | }
|
|---|
| 266 | }
|
|---|
| 267 |
|
|---|
| 268 | // interface error
|
|---|
| 269 | SET_CF();
|
|---|
| 270 | regs.u.r8.ah = 3;
|
|---|
| 271 | break;
|
|---|
| 272 |
|
|---|
| 273 | case 2: // Set Sample Rate
|
|---|
| 274 | BX_DEBUG_INT15_MS("case 2:\n");
|
|---|
| 275 | switch (regs.u.r8.bh) {
|
|---|
| 276 | case 0: mouse_data1 = 10; break; // 10 reports/sec
|
|---|
| 277 | case 1: mouse_data1 = 20; break; // 20 reports/sec
|
|---|
| 278 | case 2: mouse_data1 = 40; break; // 40 reports/sec
|
|---|
| 279 | case 3: mouse_data1 = 60; break; // 60 reports/sec
|
|---|
| 280 | case 4: mouse_data1 = 80; break; // 80 reports/sec
|
|---|
| 281 | case 5: mouse_data1 = 100; break; // 100 reports/sec (default)
|
|---|
| 282 | case 6: mouse_data1 = 200; break; // 200 reports/sec
|
|---|
| 283 | default: mouse_data1 = 0;
|
|---|
| 284 | }
|
|---|
| 285 | if (mouse_data1 > 0) {
|
|---|
| 286 | ret = send_to_mouse_ctrl(0xF3); // set sample rate command
|
|---|
| 287 | if (ret == 0) {
|
|---|
| 288 | ret = get_mouse_data(&mouse_data2);
|
|---|
| 289 | ret = send_to_mouse_ctrl(mouse_data1);
|
|---|
| 290 | ret = get_mouse_data(&mouse_data2);
|
|---|
| 291 | // success
|
|---|
| 292 | } else {
|
|---|
| 293 | // interface error
|
|---|
| 294 | SET_CF();
|
|---|
| 295 | regs.u.r8.ah = 3;
|
|---|
| 296 | }
|
|---|
| 297 | } else {
|
|---|
| 298 | // invalid input
|
|---|
| 299 | SET_CF();
|
|---|
| 300 | regs.u.r8.ah = 2;
|
|---|
| 301 | }
|
|---|
| 302 | break;
|
|---|
| 303 |
|
|---|
| 304 | case 3: // Set Resolution
|
|---|
| 305 | BX_DEBUG_INT15_MS("case 3:\n");
|
|---|
| 306 | // BX:
|
|---|
| 307 | // 0 = 25 dpi, 1 count per millimeter
|
|---|
| 308 | // 1 = 50 dpi, 2 counts per millimeter
|
|---|
| 309 | // 2 = 100 dpi, 4 counts per millimeter
|
|---|
| 310 | // 3 = 200 dpi, 8 counts per millimeter
|
|---|
| 311 | if (regs.u.r8.bh < 4) {
|
|---|
| 312 | ret = send_to_mouse_ctrl(0xE8); // set resolution command
|
|---|
| 313 | if (ret == 0) {
|
|---|
| 314 | ret = get_mouse_data(&mouse_data1);
|
|---|
| 315 | if (mouse_data1 != 0xfa)
|
|---|
| 316 | BX_PANIC("Mouse status returned %02x (should be ack)\n", (unsigned)mouse_data1);
|
|---|
| 317 | ret = send_to_mouse_ctrl(regs.u.r8.bh);
|
|---|
| 318 | ret = get_mouse_data(&mouse_data1);
|
|---|
| 319 | if (mouse_data1 != 0xfa)
|
|---|
| 320 | BX_PANIC("Mouse status returned %02x (should be ack)\n", (unsigned)mouse_data1);
|
|---|
| 321 | // success
|
|---|
| 322 | } else {
|
|---|
| 323 | // interface error
|
|---|
| 324 | SET_CF();
|
|---|
| 325 | regs.u.r8.ah = 3;
|
|---|
| 326 | }
|
|---|
| 327 | } else {
|
|---|
| 328 | // invalid input
|
|---|
| 329 | SET_CF();
|
|---|
| 330 | regs.u.r8.ah = 2;
|
|---|
| 331 | }
|
|---|
| 332 | break;
|
|---|
| 333 |
|
|---|
| 334 | case 4: // Get Device ID
|
|---|
| 335 | BX_DEBUG_INT15_MS("case 4:\n");
|
|---|
| 336 | ret = send_to_mouse_ctrl(0xF2); // get mouse ID command
|
|---|
| 337 | if (ret == 0) {
|
|---|
| 338 | ret = get_mouse_data(&mouse_data1);
|
|---|
| 339 | ret = get_mouse_data(&mouse_data2);
|
|---|
| 340 | regs.u.r8.bh = mouse_data2;
|
|---|
| 341 | // success
|
|---|
| 342 | } else {
|
|---|
| 343 | // interface error
|
|---|
| 344 | SET_CF();
|
|---|
| 345 | regs.u.r8.ah = 3;
|
|---|
| 346 | }
|
|---|
| 347 | break;
|
|---|
| 348 |
|
|---|
| 349 | case 6: // Return Status & Set Scaling Factor...
|
|---|
| 350 | BX_DEBUG_INT15_MS("case 6:\n");
|
|---|
| 351 | switch (regs.u.r8.bh) {
|
|---|
| 352 | case 0: // Return Status
|
|---|
| 353 | ret = send_to_mouse_ctrl(0xE9); // get mouse info command
|
|---|
| 354 | if (ret == 0) {
|
|---|
| 355 | ret = get_mouse_data(&mouse_data1);
|
|---|
| 356 | if (mouse_data1 != 0xfa)
|
|---|
| 357 | BX_PANIC("Mouse status returned %02x (should be ack)\n", (unsigned)mouse_data1);
|
|---|
| 358 | if (ret == 0) {
|
|---|
| 359 | ret = get_mouse_data(&mouse_data1);
|
|---|
| 360 | if ( ret == 0 ) {
|
|---|
| 361 | ret = get_mouse_data(&mouse_data2);
|
|---|
| 362 | if ( ret == 0 ) {
|
|---|
| 363 | ret = get_mouse_data(&mouse_data3);
|
|---|
| 364 | if ( ret == 0 ) {
|
|---|
| 365 | regs.u.r8.bl = mouse_data1;
|
|---|
| 366 | regs.u.r8.cl = mouse_data2;
|
|---|
| 367 | regs.u.r8.dl = mouse_data3;
|
|---|
| 368 | // success
|
|---|
| 369 | break;
|
|---|
| 370 | }
|
|---|
| 371 | }
|
|---|
| 372 | }
|
|---|
| 373 | }
|
|---|
| 374 | }
|
|---|
| 375 |
|
|---|
| 376 | // interface error
|
|---|
| 377 | SET_CF();
|
|---|
| 378 | regs.u.r8.ah = 3;
|
|---|
| 379 | break;
|
|---|
| 380 |
|
|---|
| 381 | case 1: // Set Scaling Factor to 1:1
|
|---|
| 382 | case 2: // Set Scaling Factor to 2:1
|
|---|
| 383 | if (regs.u.r8.bh == 1) {
|
|---|
| 384 | ret = send_to_mouse_ctrl(0xE6);
|
|---|
| 385 | } else {
|
|---|
| 386 | ret = send_to_mouse_ctrl(0xE7);
|
|---|
| 387 | }
|
|---|
| 388 | if (ret == 0) {
|
|---|
| 389 | get_mouse_data(&mouse_data1);
|
|---|
| 390 | ret = (mouse_data1 != 0xFA);
|
|---|
| 391 | }
|
|---|
| 392 | if (ret != 0) {
|
|---|
| 393 | // interface error
|
|---|
| 394 | SET_CF();
|
|---|
| 395 | regs.u.r8.ah = 3;
|
|---|
| 396 | }
|
|---|
| 397 | break;
|
|---|
| 398 |
|
|---|
| 399 | default:
|
|---|
| 400 | BX_PANIC("INT 15h C2 AL=6, BH=%02x\n", (unsigned) regs.u.r8.bh);
|
|---|
| 401 | // invalid subfunction
|
|---|
| 402 | SET_CF();
|
|---|
| 403 | regs.u.r8.ah = 1;
|
|---|
| 404 | }
|
|---|
| 405 | break;
|
|---|
| 406 |
|
|---|
| 407 | case 7: // Set Mouse Handler Address
|
|---|
| 408 | BX_DEBUG_INT15_MS("case 7:\n");
|
|---|
| 409 | mouse_driver_seg = ES;
|
|---|
| 410 | mouse_driver_offset = regs.u.r16.bx;
|
|---|
| 411 | write_word(ebda_seg, 0x0022, mouse_driver_offset);
|
|---|
| 412 | write_word(ebda_seg, 0x0024, mouse_driver_seg);
|
|---|
| 413 | mouse_flags_2 = read_byte(ebda_seg, 0x0027);
|
|---|
| 414 | if (mouse_driver_offset == 0 && mouse_driver_seg == 0) {
|
|---|
| 415 | /* remove handler */
|
|---|
| 416 | if ( (mouse_flags_2 & 0x80) != 0 ) {
|
|---|
| 417 | mouse_flags_2 &= ~0x80;
|
|---|
| 418 | }
|
|---|
| 419 | }
|
|---|
| 420 | else {
|
|---|
| 421 | /* install handler */
|
|---|
| 422 | mouse_flags_2 |= 0x80;
|
|---|
| 423 | }
|
|---|
| 424 | write_byte(ebda_seg, 0x0027, mouse_flags_2);
|
|---|
| 425 | break;
|
|---|
| 426 |
|
|---|
| 427 | default:
|
|---|
| 428 | BX_PANIC("INT 15h C2 default case entered\n");
|
|---|
| 429 | // invalid subfunction
|
|---|
| 430 | SET_CF();
|
|---|
| 431 | regs.u.r8.ah = 1;
|
|---|
| 432 | }
|
|---|
| 433 | BX_DEBUG_INT15_MS("returning cf = %u, ah = %02x\n", (unsigned)GET_CF(), (unsigned)regs.u.r8.ah);
|
|---|
| 434 | // Re-enable AUX input and IRQ12
|
|---|
| 435 | set_kbd_command_byte(0x47);
|
|---|
| 436 | }
|
|---|
| 437 | #endif // BX_USE_PS2_MOUSE
|
|---|
