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Bochs/bochs/iodev/keyboard.cc
Stanislav Shwartsman 39ccbf5a77 cleanup and style changes, fixed gcc4.6 warning
2011-05-10 20:04:20 +00:00

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/////////////////////////////////////////////////////////////////////////
// $Id$
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2002-2009 The Bochs Project
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
/////////////////////////////////////////////////////////////////////////
// Now features proper implementation of keyboard opcodes 0xF4 to 0xF6
// Silently ignores PS/2 keyboard extensions (0xF7 to 0xFD)
// Explicit panic on resend (0xFE)
//
// Emmanuel Marty <core@ggi-project.org>
// NB: now the PS/2 mouse support is in, outb changes meaning
// in conjunction with auxb
// auxb == 0 && outb == 0 => both buffers empty (nothing to read)
// auxb == 0 && outb == 1 => keyboard controller output buffer full
// auxb == 1 && outb == 0 => not used
// auxb == 1 && outb == 1 => mouse output buffer full.
// (das)
// Notes from Christophe Bothamy <cbbochs@free.fr>
//
// This file includes code from Ludovic Lange (http://ludovic.lange.free.fr)
// Implementation of 3 scancodes sets mf1,mf2,mf3 with or without translation.
// Default is mf2 with translation
// Ability to switch between scancodes sets
// Ability to turn translation on or off
// Define BX_PLUGGABLE in files that can be compiled into plugins. For
// platforms that require a special tag on exported symbols, BX_PLUGGABLE
// is used to know when we are exporting symbols and when we are importing.
#define BX_PLUGGABLE
#include "iodev.h"
#include "gui/keymap.h"
#include <math.h>
#include "keyboard.h"
#include "scancodes.h"
#define LOG_THIS theKeyboard->
#define VERBOSE_KBD_DEBUG 0
bx_keyb_c *theKeyboard = NULL;
int libkeyboard_LTX_plugin_init(plugin_t *plugin, plugintype_t type, int argc, char *argv[])
{
// Create one instance of the keyboard device object.
theKeyboard = new bx_keyb_c();
// Before this plugin was loaded, pluginKeyboard pointed to a stub.
// Now make it point to the real thing.
bx_devices.pluginKeyboard = theKeyboard;
// Register this device.
BX_REGISTER_DEVICE_DEVMODEL(plugin, type, theKeyboard, BX_PLUGIN_KEYBOARD);
return(0); // Success
}
void libkeyboard_LTX_plugin_fini(void)
{
delete theKeyboard;
}
bx_keyb_c::bx_keyb_c()
{
put("KBD");
pastebuf = NULL;
}
bx_keyb_c::~bx_keyb_c()
{
// remove runtime parameter handler
SIM->get_param_num(BXPN_KBD_PASTE_DELAY)->set_handler(NULL);
if (pastebuf != NULL) {
delete [] pastebuf;
}
#if BX_WITH_WX
bx_list_c *list = (bx_list_c*)SIM->get_param(BXPN_WX_KBD_STATE);
if (list != NULL) {
list->clear();
}
#endif
BX_DEBUG(("Exit"));
}
// flush internal buffer and reset keyboard settings to power-up condition
void bx_keyb_c::resetinternals(bx_bool powerup)
{
BX_KEY_THIS s.kbd_internal_buffer.num_elements = 0;
for (int i=0; i<BX_KBD_ELEMENTS; i++)
BX_KEY_THIS s.kbd_internal_buffer.buffer[i] = 0;
BX_KEY_THIS s.kbd_internal_buffer.head = 0;
BX_KEY_THIS s.kbd_internal_buffer.expecting_typematic = 0;
// Default scancode set is mf2 (translation is controlled by the 8042)
BX_KEY_THIS s.kbd_controller.expecting_scancodes_set = 0;
BX_KEY_THIS s.kbd_controller.current_scancodes_set = 1;
if (powerup) {
BX_KEY_THIS s.kbd_internal_buffer.expecting_led_write = 0;
BX_KEY_THIS s.kbd_internal_buffer.delay = 1; // 500 mS
BX_KEY_THIS s.kbd_internal_buffer.repeat_rate = 0x0b; // 10.9 chars/sec
}
}
void bx_keyb_c::init(void)
{
BX_DEBUG(("Init $Id$"));
Bit32u i;
DEV_register_irq(1, "8042 Keyboard controller");
DEV_register_irq(12, "8042 Keyboard controller (PS/2 mouse)");
DEV_register_ioread_handler(this, read_handler,
0x0060, "8042 Keyboard controller", 1);
DEV_register_ioread_handler(this, read_handler,
0x0064, "8042 Keyboard controller", 1);
DEV_register_iowrite_handler(this, write_handler,
0x0060, "8042 Keyboard controller", 1);
DEV_register_iowrite_handler(this, write_handler,
0x0064, "8042 Keyboard controller", 1);
BX_KEY_THIS timer_handle = bx_pc_system.register_timer(this, timer_handler,
SIM->get_param_num(BXPN_KBD_SERIAL_DELAY)->get(), 1, 1,
"8042 Keyboard controller");
resetinternals(1);
BX_KEY_THIS s.kbd_internal_buffer.led_status = 0;
BX_KEY_THIS s.kbd_internal_buffer.scanning_enabled = 1;
BX_KEY_THIS s.mouse_internal_buffer.num_elements = 0;
for (i=0; i<BX_MOUSE_BUFF_SIZE; i++)
BX_KEY_THIS s.mouse_internal_buffer.buffer[i] = 0;
BX_KEY_THIS s.mouse_internal_buffer.head = 0;
BX_KEY_THIS s.kbd_controller.pare = 0;
BX_KEY_THIS s.kbd_controller.tim = 0;
BX_KEY_THIS s.kbd_controller.auxb = 0;
BX_KEY_THIS s.kbd_controller.keyl = 1;
BX_KEY_THIS s.kbd_controller.c_d = 1;
BX_KEY_THIS s.kbd_controller.sysf = 0;
BX_KEY_THIS s.kbd_controller.inpb = 0;
BX_KEY_THIS s.kbd_controller.outb = 0;
BX_KEY_THIS s.kbd_controller.kbd_clock_enabled = 1;
BX_KEY_THIS s.kbd_controller.aux_clock_enabled = 0;
BX_KEY_THIS s.kbd_controller.allow_irq1 = 1;
BX_KEY_THIS s.kbd_controller.allow_irq12 = 1;
BX_KEY_THIS s.kbd_controller.kbd_output_buffer = 0;
BX_KEY_THIS s.kbd_controller.aux_output_buffer = 0;
BX_KEY_THIS s.kbd_controller.last_comm = 0;
BX_KEY_THIS s.kbd_controller.expecting_port60h = 0;
BX_KEY_THIS s.kbd_controller.irq1_requested = 0;
BX_KEY_THIS s.kbd_controller.irq12_requested = 0;
BX_KEY_THIS s.kbd_controller.expecting_mouse_parameter = 0;
BX_KEY_THIS s.kbd_controller.bat_in_progress = 0;
BX_KEY_THIS s.kbd_controller.scancodes_translate = 1;
BX_KEY_THIS s.kbd_controller.timer_pending = 0;
// Mouse initialization stuff
BX_KEY_THIS s.mouse.type = SIM->get_param_enum(BXPN_MOUSE_TYPE)->get();
BX_KEY_THIS s.mouse.sample_rate = 100; // reports per second
BX_KEY_THIS s.mouse.resolution_cpmm = 4; // 4 counts per millimeter
BX_KEY_THIS s.mouse.scaling = 1; /* 1:1 (default) */
BX_KEY_THIS s.mouse.mode = MOUSE_MODE_RESET;
BX_KEY_THIS s.mouse.enable = 0;
BX_KEY_THIS s.mouse.delayed_dx = 0;
BX_KEY_THIS s.mouse.delayed_dy = 0;
BX_KEY_THIS s.mouse.delayed_dz = 0;
BX_KEY_THIS s.mouse.im_request = 0; // wheel mouse mode request
BX_KEY_THIS s.mouse.im_mode = 0; // wheel mouse mode
for (i=0; i<BX_KBD_CONTROLLER_QSIZE; i++)
BX_KEY_THIS s.controller_Q[i] = 0;
BX_KEY_THIS s.controller_Qsize = 0;
BX_KEY_THIS s.controller_Qsource = 0;
// clear paste buffer
BX_KEY_THIS pastebuf = NULL;
BX_KEY_THIS pastebuf_len = 0;
BX_KEY_THIS pastebuf_ptr = 0;
BX_KEY_THIS paste_delay_changed(SIM->get_param_num(BXPN_KBD_PASTE_DELAY)->get());
BX_KEY_THIS paste_service = 0;
BX_KEY_THIS stop_paste = 0;
// mouse port installed on system board
DEV_cmos_set_reg(0x14, DEV_cmos_get_reg(0x14) | 0x04);
// add keyboard LEDs to the statusbar
BX_KEY_THIS statusbar_id[0] = bx_gui->register_statusitem("NUM");
BX_KEY_THIS statusbar_id[1] = bx_gui->register_statusitem("CAPS");
BX_KEY_THIS statusbar_id[2] = bx_gui->register_statusitem("SCRL");
#if BX_WITH_WX
bx_param_num_c *param;
bx_list_c *list;
if (SIM->get_param("wxdebug") != NULL) {
// register shadow params (Experimental, not a complete list by far)
list = (bx_list_c*)SIM->get_param(BXPN_WX_KBD_STATE);
if (list == NULL) {
list = new bx_list_c(SIM->get_param("wxdebug"), "keyboard",
"Keyboard State", 20);
}
new bx_shadow_bool_c(list, "irq1_req",
"Keyboard IRQ1 requested",
&BX_KEY_THIS s.kbd_controller.irq1_requested);
new bx_shadow_bool_c(list, "irq12_req",
"Keyboard IRQ12 requested",
&BX_KEY_THIS s.kbd_controller.irq12_requested);
param = new bx_shadow_num_c(list, "timer_pending",
&BX_KEY_THIS s.kbd_controller.timer_pending);
param->set_label("Keyboard timer pending");
new bx_shadow_bool_c(list, "pare",
"Keyboard PARE",
&BX_KEY_THIS s.kbd_controller.pare);
new bx_shadow_bool_c(list, "tim",
"Keyboard TIM",
&BX_KEY_THIS s.kbd_controller.tim);
new bx_shadow_bool_c(list, "auxb",
"Keyboard AUXB",
&BX_KEY_THIS s.kbd_controller.auxb);
new bx_shadow_bool_c(list, "keyl",
"Keyboard KEYL",
&BX_KEY_THIS s.kbd_controller.keyl);
new bx_shadow_bool_c(list, "c_d",
"Keyboard C_D",
&BX_KEY_THIS s.kbd_controller.c_d);
new bx_shadow_bool_c(list, "sysf",
"Keyboard SYSF",
&BX_KEY_THIS s.kbd_controller.sysf);
new bx_shadow_bool_c(list, "inpb",
"Keyboard INPB",
&BX_KEY_THIS s.kbd_controller.inpb);
new bx_shadow_bool_c(list, "outb",
"Keyboard OUTB",
&BX_KEY_THIS s.kbd_controller.outb);
}
#endif
if ((BX_KEY_THIS s.mouse.type == BX_MOUSE_TYPE_PS2) ||
(BX_KEY_THIS s.mouse.type == BX_MOUSE_TYPE_IMPS2)) {
DEV_register_default_mouse(this, mouse_enq_static, mouse_enabled_changed_static);
}
// init runtime parameter
SIM->get_param_num(BXPN_KBD_PASTE_DELAY)->set_handler(kbd_param_handler);
SIM->get_param_num(BXPN_KBD_PASTE_DELAY)->set_runtime_param(1);
SIM->get_param_num(BXPN_MOUSE_ENABLED)->set_handler(kbd_param_handler);
SIM->get_param_num(BXPN_MOUSE_ENABLED)->set_runtime_param(1);
}
void bx_keyb_c::reset(unsigned type)
{
if (BX_KEY_THIS pastebuf != NULL) {
BX_KEY_THIS stop_paste = 1;
}
}
void bx_keyb_c::register_state(void)
{
int i;
char name[4];
bx_list_c *buffer;
bx_list_c *list = new bx_list_c(SIM->get_bochs_root(), "keyboard", "Keyboard State", 7);
bx_list_c *ctrl = new bx_list_c(list, "controller", 23);
BXRS_PARAM_BOOL(ctrl, tim, BX_KEY_THIS s.kbd_controller.tim);
BXRS_PARAM_BOOL(ctrl, auxb, BX_KEY_THIS s.kbd_controller.auxb);
BXRS_PARAM_BOOL(ctrl, c_d, BX_KEY_THIS s.kbd_controller.c_d);
BXRS_PARAM_BOOL(ctrl, sysf, BX_KEY_THIS s.kbd_controller.sysf);
BXRS_PARAM_BOOL(ctrl, inpb, BX_KEY_THIS s.kbd_controller.inpb);
BXRS_PARAM_BOOL(ctrl, outb, BX_KEY_THIS s.kbd_controller.outb);
BXRS_PARAM_BOOL(ctrl, kbd_clock_enabled, BX_KEY_THIS s.kbd_controller.kbd_clock_enabled);
BXRS_PARAM_BOOL(ctrl, aux_clock_enabled, BX_KEY_THIS s.kbd_controller.aux_clock_enabled);
BXRS_PARAM_BOOL(ctrl, allow_irq1, BX_KEY_THIS s.kbd_controller.allow_irq1);
BXRS_PARAM_BOOL(ctrl, allow_irq12, BX_KEY_THIS s.kbd_controller.allow_irq12);
BXRS_HEX_PARAM_FIELD(ctrl, kbd_output_buffer, BX_KEY_THIS s.kbd_controller.kbd_output_buffer);
BXRS_HEX_PARAM_FIELD(ctrl, aux_output_buffer, BX_KEY_THIS s.kbd_controller.aux_output_buffer);
BXRS_HEX_PARAM_FIELD(ctrl, last_comm, BX_KEY_THIS s.kbd_controller.last_comm);
BXRS_DEC_PARAM_FIELD(ctrl, expecting_port60h, BX_KEY_THIS s.kbd_controller.expecting_port60h);
BXRS_DEC_PARAM_FIELD(ctrl, expecting_mouse_parameter, BX_KEY_THIS s.kbd_controller.expecting_mouse_parameter);
BXRS_HEX_PARAM_FIELD(ctrl, last_mouse_command, BX_KEY_THIS s.kbd_controller.last_mouse_command);
BXRS_DEC_PARAM_FIELD(ctrl, timer_pending, BX_KEY_THIS s.kbd_controller.timer_pending);
BXRS_PARAM_BOOL(ctrl, irq1_requested, BX_KEY_THIS s.kbd_controller.irq1_requested);
BXRS_PARAM_BOOL(ctrl, irq12_requested, BX_KEY_THIS s.kbd_controller.irq12_requested);
BXRS_PARAM_BOOL(ctrl, scancodes_translate, BX_KEY_THIS s.kbd_controller.scancodes_translate);
BXRS_PARAM_BOOL(ctrl, expecting_scancodes_set, BX_KEY_THIS s.kbd_controller.expecting_scancodes_set);
BXRS_DEC_PARAM_FIELD(ctrl, current_scancodes_set, BX_KEY_THIS s.kbd_controller.current_scancodes_set);
BXRS_PARAM_BOOL(ctrl, bat_in_progress, BX_KEY_THIS s.kbd_controller.bat_in_progress);
bx_list_c *mouse = new bx_list_c(list, "mouse", 12);
BXRS_DEC_PARAM_FIELD(mouse, sample_rate, BX_KEY_THIS s.mouse.sample_rate);
BXRS_DEC_PARAM_FIELD(mouse, resolution_cpmm, BX_KEY_THIS s.mouse.resolution_cpmm);
BXRS_DEC_PARAM_FIELD(mouse, scaling, BX_KEY_THIS s.mouse.scaling);
BXRS_DEC_PARAM_FIELD(mouse, mode, BX_KEY_THIS s.mouse.mode);
BXRS_DEC_PARAM_FIELD(mouse, saved_mode, BX_KEY_THIS s.mouse.saved_mode);
BXRS_PARAM_BOOL(mouse, enable, BX_KEY_THIS s.mouse.enable);
BXRS_DEC_PARAM_FIELD(mouse, button_status, BX_KEY_THIS s.mouse.button_status);
BXRS_DEC_PARAM_FIELD(mouse, delayed_dx, BX_KEY_THIS s.mouse.delayed_dx);
BXRS_DEC_PARAM_FIELD(mouse, delayed_dy, BX_KEY_THIS s.mouse.delayed_dy);
BXRS_DEC_PARAM_FIELD(mouse, delayed_dz, BX_KEY_THIS s.mouse.delayed_dz);
BXRS_DEC_PARAM_FIELD(mouse, im_request, BX_KEY_THIS s.mouse.im_request);
BXRS_PARAM_BOOL(mouse, im_mode, BX_KEY_THIS s.mouse.im_mode);
bx_list_c *kbdbuf = new bx_list_c(list, "kbd_internal_buffer", 9);
BXRS_DEC_PARAM_FIELD(kbdbuf, num_elements, BX_KEY_THIS s.kbd_internal_buffer.num_elements);
buffer = new bx_list_c(kbdbuf, "buffer", BX_KBD_ELEMENTS);
for (i=0; i<BX_KBD_ELEMENTS; i++) {
sprintf(name, "%d", i);
new bx_shadow_num_c(buffer, name, &BX_KEY_THIS s.kbd_internal_buffer.buffer[i], BASE_HEX);
}
BXRS_DEC_PARAM_FIELD(kbdbuf, head, BX_KEY_THIS s.kbd_internal_buffer.head);
BXRS_PARAM_BOOL(kbdbuf, expecting_typematic, BX_KEY_THIS s.kbd_internal_buffer.expecting_typematic);
BXRS_PARAM_BOOL(kbdbuf, expecting_led_write, BX_KEY_THIS s.kbd_internal_buffer.expecting_led_write);
BXRS_DEC_PARAM_FIELD(kbdbuf, delay, BX_KEY_THIS s.kbd_internal_buffer.delay);
BXRS_DEC_PARAM_FIELD(kbdbuf, repeat_rate, BX_KEY_THIS s.kbd_internal_buffer.repeat_rate);
BXRS_DEC_PARAM_FIELD(kbdbuf, led_status, BX_KEY_THIS s.kbd_internal_buffer.led_status);
BXRS_PARAM_BOOL(kbdbuf, scanning_enabled, BX_KEY_THIS s.kbd_internal_buffer.scanning_enabled);
bx_list_c *mousebuf = new bx_list_c(list, "mouse_internal_buffer", 3);
BXRS_DEC_PARAM_FIELD(mousebuf, num_elements, BX_KEY_THIS s.mouse_internal_buffer.num_elements);
buffer = new bx_list_c(mousebuf, "buffer", BX_MOUSE_BUFF_SIZE);
for (i=0; i<BX_MOUSE_BUFF_SIZE; i++) {
sprintf(name, "%d", i);
new bx_shadow_num_c(buffer, name, &BX_KEY_THIS s.mouse_internal_buffer.buffer[i], BASE_HEX);
}
BXRS_DEC_PARAM_FIELD(mousebuf, head, BX_KEY_THIS s.mouse_internal_buffer.head);
buffer = new bx_list_c(list, "controller_Q", BX_KBD_CONTROLLER_QSIZE);
for (i=0; i<BX_KBD_CONTROLLER_QSIZE; i++) {
sprintf(name, "%d", i);
new bx_shadow_num_c(buffer, name, &BX_KEY_THIS s.controller_Q[i], BASE_HEX);
}
BXRS_DEC_PARAM_FIELD(list, controller_Qsize, BX_KEY_THIS s.controller_Qsize);
BXRS_DEC_PARAM_FIELD(list, controller_Qsource, BX_KEY_THIS s.controller_Qsource);
}
void bx_keyb_c::after_restore_state(void)
{
Bit8u value = BX_KEY_THIS s.kbd_internal_buffer.led_status;
if (value != 0) {
bx_gui->statusbar_setitem(BX_KEY_THIS statusbar_id[0], value & 0x02);
bx_gui->statusbar_setitem(BX_KEY_THIS statusbar_id[1], value & 0x04);
bx_gui->statusbar_setitem(BX_KEY_THIS statusbar_id[2], value & 0x01);
}
}
Bit64s bx_keyb_c::kbd_param_handler(bx_param_c *param, int set, Bit64s val)
{
if (set) {
char pname[BX_PATHNAME_LEN];
param->get_param_path(pname, BX_PATHNAME_LEN);
if (!strcmp(pname, BXPN_KBD_PASTE_DELAY)) {
BX_KEY_THIS paste_delay_changed((Bit32u)val);
} else if (!strcmp(pname, BXPN_MOUSE_ENABLED)) {
if (set) {
bx_gui->mouse_enabled_changed(val!=0);
DEV_mouse_enabled_changed(val!=0);
}
} else {
BX_PANIC(("kbd_param_handler called with unexpected parameter '%s'", pname));
}
}
return val;
}
void bx_keyb_c::paste_delay_changed(Bit32u value)
{
BX_KEY_THIS pastedelay = value / BX_IODEV_HANDLER_PERIOD;
BX_INFO(("will paste characters every %d keyboard ticks",BX_KEY_THIS pastedelay));
}
// static IO port read callback handler
// redirects to non-static class handler to avoid virtual functions
// read function - the big picture:
// if address == data port then
// if byte for mouse then return it
// else if byte for keyboard then return it
// else address== status port
// assemble the status bits and return them.
//
Bit32u bx_keyb_c::read_handler(void *this_ptr, Bit32u address, unsigned io_len)
{
#if !BX_USE_KEY_SMF
bx_keyb_c *class_ptr = (bx_keyb_c *)this_ptr;
return (class_ptr->read(address, io_len));
}
Bit32u bx_keyb_c::read(Bit32u address, unsigned io_len)
{
#else
UNUSED(this_ptr);
#endif // !BX_USE_KEY_SMF
Bit8u val;
if (address == 0x60) { /* output buffer */
if (BX_KEY_THIS s.kbd_controller.auxb) { /* mouse byte available */
val = BX_KEY_THIS s.kbd_controller.aux_output_buffer;
BX_KEY_THIS s.kbd_controller.aux_output_buffer = 0;
BX_KEY_THIS s.kbd_controller.outb = 0;
BX_KEY_THIS s.kbd_controller.auxb = 0;
BX_KEY_THIS s.kbd_controller.irq12_requested = 0;
if (BX_KEY_THIS s.controller_Qsize) {
unsigned i;
BX_KEY_THIS s.kbd_controller.aux_output_buffer = BX_KEY_THIS s.controller_Q[0];
BX_KEY_THIS s.kbd_controller.outb = 1;
BX_KEY_THIS s.kbd_controller.auxb = 1;
if (BX_KEY_THIS s.kbd_controller.allow_irq12)
BX_KEY_THIS s.kbd_controller.irq12_requested = 1;
for (i=0; i<BX_KEY_THIS s.controller_Qsize-1; i++) {
// move Q elements towards head of queue by one
BX_KEY_THIS s.controller_Q[i] = BX_KEY_THIS s.controller_Q[i+1];
}
BX_KEY_THIS s.controller_Qsize--;
}
DEV_pic_lower_irq(12);
activate_timer();
BX_DEBUG(("[mouse] read from 0x%02x returns 0x%02x", address, val));
return val;
}
else if (BX_KEY_THIS s.kbd_controller.outb) { /* kbd byte available */
val = BX_KEY_THIS s.kbd_controller.kbd_output_buffer;
BX_KEY_THIS s.kbd_controller.outb = 0;
BX_KEY_THIS s.kbd_controller.auxb = 0;
BX_KEY_THIS s.kbd_controller.irq1_requested = 0;
BX_KEY_THIS s.kbd_controller.bat_in_progress = 0;
if (BX_KEY_THIS s.controller_Qsize) {
unsigned i;
BX_KEY_THIS s.kbd_controller.aux_output_buffer = BX_KEY_THIS s.controller_Q[0];
BX_KEY_THIS s.kbd_controller.outb = 1;
BX_KEY_THIS s.kbd_controller.auxb = 1;
if (BX_KEY_THIS s.kbd_controller.allow_irq1)
BX_KEY_THIS s.kbd_controller.irq1_requested = 1;
for (i=0; i<BX_KEY_THIS s.controller_Qsize-1; i++) {
// move Q elements towards head of queue by one
BX_KEY_THIS s.controller_Q[i] = BX_KEY_THIS s.controller_Q[i+1];
}
BX_DEBUG(("s.controller_Qsize: %02X",BX_KEY_THIS s.controller_Qsize));
BX_KEY_THIS s.controller_Qsize--;
}
DEV_pic_lower_irq(1);
activate_timer();
BX_DEBUG(("READ(%02x) = %02x", (unsigned) address, (unsigned) val));
return val;
}
else {
BX_DEBUG(("num_elements = %d", BX_KEY_THIS s.kbd_internal_buffer.num_elements));
BX_DEBUG(("read from port 60h with outb empty"));
return BX_KEY_THIS s.kbd_controller.kbd_output_buffer;
}
}
#if BX_CPU_LEVEL >= 2
else if (address == 0x64) { /* status register */
val = (BX_KEY_THIS s.kbd_controller.pare << 7) |
(BX_KEY_THIS s.kbd_controller.tim << 6) |
(BX_KEY_THIS s.kbd_controller.auxb << 5) |
(BX_KEY_THIS s.kbd_controller.keyl << 4) |
(BX_KEY_THIS s.kbd_controller.c_d << 3) |
(BX_KEY_THIS s.kbd_controller.sysf << 2) |
(BX_KEY_THIS s.kbd_controller.inpb << 1) |
BX_KEY_THIS s.kbd_controller.outb;
BX_KEY_THIS s.kbd_controller.tim = 0;
return val;
}
#else /* BX_CPU_LEVEL > 0 */
/* XT MODE, System 8255 Mode Register */
else if (address == 0x64) { /* status register */
BX_DEBUG(("IO read from port 64h, system 8255 mode register"));
return BX_KEY_THIS s.kbd_controller.outb;
}
#endif /* BX_CPU_LEVEL > 0 */
BX_PANIC(("unknown address in io read to keyboard port %x",
(unsigned) address));
return 0; /* keep compiler happy */
}
// static IO port write callback handler
// redirects to non-static class handler to avoid virtual functions
void bx_keyb_c::write_handler(void *this_ptr, Bit32u address, Bit32u value, unsigned io_len)
{
#if !BX_USE_KEY_SMF
bx_keyb_c *class_ptr = (bx_keyb_c *)this_ptr;
class_ptr->write(address, value, io_len);
}
void bx_keyb_c::write(Bit32u address, Bit32u value, unsigned io_len)
{
#else
UNUSED(this_ptr);
#endif // !BX_USE_KEY_SMF
Bit8u command_byte;
static int kbd_initialized=0;
BX_DEBUG(("keyboard: 8-bit write to %04x = %02x", (unsigned)address, (unsigned)value));
switch (address) {
case 0x60: // input buffer
// if expecting data byte from command last sent to port 64h
if (BX_KEY_THIS s.kbd_controller.expecting_port60h) {
BX_KEY_THIS s.kbd_controller.expecting_port60h = 0;
// data byte written last to 0x60
BX_KEY_THIS s.kbd_controller.c_d = 0;
if (BX_KEY_THIS s.kbd_controller.inpb) {
BX_PANIC(("write to port 60h, not ready for write"));
}
switch (BX_KEY_THIS s.kbd_controller.last_comm) {
case 0x60: // write command byte
{
bx_bool scan_convert, disable_keyboard,
disable_aux;
scan_convert = (value >> 6) & 0x01;
disable_aux = (value >> 5) & 0x01;
disable_keyboard = (value >> 4) & 0x01;
BX_KEY_THIS s.kbd_controller.sysf = (value >> 2) & 0x01;
BX_KEY_THIS s.kbd_controller.allow_irq1 = (value >> 0) & 0x01;
BX_KEY_THIS s.kbd_controller.allow_irq12 = (value >> 1) & 0x01;
set_kbd_clock_enable(!disable_keyboard);
set_aux_clock_enable(!disable_aux);
if (BX_KEY_THIS s.kbd_controller.allow_irq12 && BX_KEY_THIS s.kbd_controller.auxb)
BX_KEY_THIS s.kbd_controller.irq12_requested = 1;
else if (BX_KEY_THIS s.kbd_controller.allow_irq1 && BX_KEY_THIS s.kbd_controller.outb)
BX_KEY_THIS s.kbd_controller.irq1_requested = 1;
BX_DEBUG((" allow_irq12 set to %u",
(unsigned) BX_KEY_THIS s.kbd_controller.allow_irq12));
if (!scan_convert)
BX_INFO(("keyboard: scan convert turned off"));
// (mch) NT needs this
BX_KEY_THIS s.kbd_controller.scancodes_translate = scan_convert;
}
break;
case 0xcb: // write keyboard controller mode
BX_DEBUG(("write keyboard controller mode with value %02xh", (unsigned) value));
break;
case 0xd1: // write output port
BX_DEBUG(("write output port with value %02xh", (unsigned) value));
BX_DEBUG(("write output port : %sable A20",(value & 0x02)?"en":"dis"));
BX_SET_ENABLE_A20((value & 0x02) != 0);
if (!(value & 0x01)) {
BX_INFO(("write output port : processor reset requested!"));
bx_pc_system.Reset(BX_RESET_SOFTWARE);
}
break;
case 0xd4: // Write to mouse
// I don't think this enables the AUX clock
//set_aux_clock_enable(1); // enable aux clock line
kbd_ctrl_to_mouse(value);
// ??? should I reset to previous value of aux enable?
break;
case 0xd3: // write mouse output buffer
// Queue in mouse output buffer
controller_enQ(value, 1);
break;
case 0xd2:
// Queue in keyboard output buffer
controller_enQ(value, 0);
break;
default:
BX_PANIC(("=== unsupported write to port 60h(lastcomm=%02x): %02x",
(unsigned) BX_KEY_THIS s.kbd_controller.last_comm, (unsigned) value));
}
} else {
// data byte written last to 0x60
BX_KEY_THIS s.kbd_controller.c_d = 0;
BX_KEY_THIS s.kbd_controller.expecting_port60h = 0;
/* pass byte to keyboard */
/* ??? should conditionally pass to mouse device here ??? */
if (BX_KEY_THIS s.kbd_controller.kbd_clock_enabled==0) {
set_kbd_clock_enable(1);
}
kbd_ctrl_to_kbd(value);
}
break;
case 0x64: // control register
// command byte written last to 0x64
BX_KEY_THIS s.kbd_controller.c_d = 1;
BX_KEY_THIS s.kbd_controller.last_comm = value;
// most commands NOT expecting port60 write next
BX_KEY_THIS s.kbd_controller.expecting_port60h = 0;
switch (value) {
case 0x20: // get keyboard command byte
BX_DEBUG(("get keyboard command byte"));
// controller output buffer must be empty
if (BX_KEY_THIS s.kbd_controller.outb) {
BX_ERROR(("kbd: OUTB set and command 0x%02x encountered", value));
break;
}
command_byte =
(BX_KEY_THIS s.kbd_controller.scancodes_translate << 6) |
((!BX_KEY_THIS s.kbd_controller.aux_clock_enabled) << 5) |
((!BX_KEY_THIS s.kbd_controller.kbd_clock_enabled) << 4) |
(0 << 3) |
(BX_KEY_THIS s.kbd_controller.sysf << 2) |
(BX_KEY_THIS s.kbd_controller.allow_irq12 << 1) |
(BX_KEY_THIS s.kbd_controller.allow_irq1 << 0);
controller_enQ(command_byte, 0);
break;
case 0x60: // write command byte
BX_DEBUG(("write command byte"));
// following byte written to port 60h is command byte
BX_KEY_THIS s.kbd_controller.expecting_port60h = 1;
break;
case 0xa0:
BX_DEBUG(("keyboard BIOS name not supported"));
break;
case 0xa1:
BX_DEBUG(("keyboard BIOS version not supported"));
break;
case 0xa7: // disable the aux device
set_aux_clock_enable(0);
BX_DEBUG(("aux device disabled"));
break;
case 0xa8: // enable the aux device
set_aux_clock_enable(1);
BX_DEBUG(("aux device enabled"));
break;
case 0xa9: // Test Mouse Port
// controller output buffer must be empty
if (BX_KEY_THIS s.kbd_controller.outb) {
BX_PANIC(("kbd: OUTB set and command 0x%02x encountered", value));
break;
}
controller_enQ(0x00, 0); // no errors detected
break;
case 0xaa: // motherboard controller self test
BX_DEBUG(("Self Test"));
if (kbd_initialized == 0) {
BX_KEY_THIS s.controller_Qsize = 0;
BX_KEY_THIS s.kbd_controller.outb = 0;
kbd_initialized++;
}
// controller output buffer must be empty
if (BX_KEY_THIS s.kbd_controller.outb) {
BX_ERROR(("kbd: OUTB set and command 0x%02x encountered", value));
break;
}
// (mch) Why is this commented out??? Enabling
BX_KEY_THIS s.kbd_controller.sysf = 1; // self test complete
controller_enQ(0x55, 0); // controller OK
break;
case 0xab: // Interface Test
// controller output buffer must be empty
if (BX_KEY_THIS s.kbd_controller.outb) {
BX_PANIC(("kbd: OUTB set and command 0x%02x encountered", value));
break;
}
controller_enQ(0x00, 0);
break;
case 0xad: // disable keyboard
set_kbd_clock_enable(0);
BX_DEBUG(("keyboard disabled"));
break;
case 0xae: // enable keyboard
set_kbd_clock_enable(1);
BX_DEBUG(("keyboard enabled"));
break;
case 0xaf: // get controller version
BX_INFO(("'get controller version' not supported yet"));
break;
case 0xc0: // read input port
// controller output buffer must be empty
if (BX_KEY_THIS s.kbd_controller.outb) {
BX_PANIC(("kbd: OUTB set and command 0x%02x encountered", value));
break;
}
// keyboard not inhibited
controller_enQ(0x80, 0);
break;
case 0xca: // read keyboard controller mode
controller_enQ(0x01, 0); // PS/2 (MCA)interface
break;
case 0xcb: // write keyboard controller mode
BX_DEBUG(("write keyboard controller mode"));
// write keyboard controller mode to bit 0 of port 0x60
BX_KEY_THIS s.kbd_controller.expecting_port60h = 1;
break;
case 0xd0: // read output port: next byte read from port 60h
BX_DEBUG(("io write to port 64h, command d0h (partial)"));
// controller output buffer must be empty
if (BX_KEY_THIS s.kbd_controller.outb) {
BX_PANIC(("kbd: OUTB set and command 0x%02x encountered", value));
break;
}
controller_enQ(
(BX_KEY_THIS s.kbd_controller.irq12_requested << 5) |
(BX_KEY_THIS s.kbd_controller.irq1_requested << 4) |
(BX_GET_ENABLE_A20() << 1) |
0x01, 0);
break;
case 0xd1: // write output port: next byte written to port 60h
BX_DEBUG(("write output port"));
// following byte to port 60h written to output port
BX_KEY_THIS s.kbd_controller.expecting_port60h = 1;
break;
case 0xd3: // write mouse output buffer
//FIXME: Why was this a panic?
BX_DEBUG(("io write 0x64: command = 0xD3(write mouse outb)"));
// following byte to port 60h written to output port as mouse write.
BX_KEY_THIS s.kbd_controller.expecting_port60h = 1;
break;
case 0xd4: // write to mouse
BX_DEBUG(("io write 0x64: command = 0xD4 (write to mouse)"));
// following byte written to port 60h
BX_KEY_THIS s.kbd_controller.expecting_port60h = 1;
break;
case 0xd2: // write keyboard output buffer
BX_DEBUG(("io write 0x64: write keyboard output buffer"));
BX_KEY_THIS s.kbd_controller.expecting_port60h = 1;
break;
case 0xdd: // Disable A20 Address Line
BX_SET_ENABLE_A20(0);
break;
case 0xdf: // Enable A20 Address Line
BX_SET_ENABLE_A20(1);
break;
case 0xc1: // Continuous Input Port Poll, Low
case 0xc2: // Continuous Input Port Poll, High
case 0xe0: // Read Test Inputs
BX_PANIC(("io write 0x64: command = %02xh", (unsigned) value));
break;
case 0xfe: // System (cpu?) Reset, transition to real mode
BX_INFO(("io write 0x64: command 0xfe: reset cpu"));
bx_pc_system.Reset(BX_RESET_SOFTWARE);
break;
default:
if (value==0xff || (value>=0xf0 && value<=0xfd)) {
/* useless pulse output bit commands ??? */
BX_DEBUG(("io write to port 64h, useless command %02x",
(unsigned) value));
return;
}
BX_ERROR(("unsupported io write to keyboard port %x, value = %x",
(unsigned) address, (unsigned) value));
break;
}
break;
default:
BX_PANIC(("unknown address in bx_keyb_c::write()"));
}
}
// service_paste_buf() transfers data from the paste buffer to the hardware
// keyboard buffer. It tries to transfer as many chars as possible at a
// time, but because different chars require different numbers of scancodes
// we have to be conservative. Note that this process depends on the
// keymap tables to know what chars correspond to what keys, and which
// chars require a shift or other modifier.
void bx_keyb_c::service_paste_buf()
{
if (!BX_KEY_THIS pastebuf) return;
BX_DEBUG(("service_paste_buf: ptr at %d out of %d", BX_KEY_THIS pastebuf_ptr, BX_KEY_THIS pastebuf_len));
int fill_threshold = BX_KBD_ELEMENTS - 8;
BX_KEY_THIS paste_service = 1;
while ((BX_KEY_THIS pastebuf_ptr < BX_KEY_THIS pastebuf_len) && !BX_KEY_THIS stop_paste) {
if (BX_KEY_THIS s.kbd_internal_buffer.num_elements >= fill_threshold) {
BX_KEY_THIS paste_service = 0;
return;
}
// there room in the buffer for a keypress and a key release.
// send one keypress and a key release.
Bit8u byte = BX_KEY_THIS pastebuf[BX_KEY_THIS pastebuf_ptr];
BXKeyEntry *entry = bx_keymap.findAsciiChar(byte);
if (!entry) {
BX_ERROR(("paste character 0x%02x ignored", byte));
} else {
BX_DEBUG(("pasting character 0x%02x. baseKey is %04x", byte, entry->baseKey));
if (entry->modKey != BX_KEYMAP_UNKNOWN)
BX_KEY_THIS gen_scancode(entry->modKey);
BX_KEY_THIS gen_scancode(entry->baseKey);
BX_KEY_THIS gen_scancode(entry->baseKey | BX_KEY_RELEASED);
if (entry->modKey != BX_KEYMAP_UNKNOWN)
BX_KEY_THIS gen_scancode(entry->modKey | BX_KEY_RELEASED);
}
BX_KEY_THIS pastebuf_ptr++;
}
// reached end of pastebuf. free the memory it was using.
delete [] BX_KEY_THIS pastebuf;
BX_KEY_THIS pastebuf = NULL;
BX_KEY_THIS stop_paste = 0;
BX_KEY_THIS paste_service = 0;
}
// paste_bytes schedules an arbitrary number of ASCII characters to be
// inserted into the hardware queue as it become available. Any previous
// paste which is still in progress will be thrown out. BYTES is a pointer
// to a region of memory containing the chars to be pasted. When the paste
// is complete, the keyboard code will call delete [] bytes;
void bx_keyb_c::paste_bytes(Bit8u *bytes, Bit32s length)
{
BX_DEBUG(("paste_bytes: %d bytes", length));
if (BX_KEY_THIS pastebuf) {
BX_ERROR(("previous paste was not completed! %d chars lost",
BX_KEY_THIS pastebuf_len - BX_KEY_THIS pastebuf_ptr));
delete [] BX_KEY_THIS pastebuf; // free the old paste buffer
}
BX_KEY_THIS pastebuf = bytes;
BX_KEY_THIS pastebuf_ptr = 0;
BX_KEY_THIS pastebuf_len = length;
BX_KEY_THIS service_paste_buf();
}
void bx_keyb_c::gen_scancode(Bit32u key)
{
unsigned char *scancode;
Bit8u i;
if ((BX_KEY_THIS pastebuf != NULL) && (!BX_KEY_THIS paste_service)) {
BX_KEY_THIS stop_paste = 1;
return;
}
BX_DEBUG(("gen_scancode(): %s %s", bx_keymap.getBXKeyName(key), (key >> 31)?"released":"pressed"));
if (!BX_KEY_THIS s.kbd_controller.scancodes_translate)
BX_DEBUG(("keyboard: gen_scancode with scancode_translate cleared"));
// Ignore scancode if keyboard clock is driven low
if (BX_KEY_THIS s.kbd_controller.kbd_clock_enabled==0)
return;
// Ignore scancode if scanning is disabled
if (BX_KEY_THIS s.kbd_internal_buffer.scanning_enabled==0)
return;
// Switch between make and break code
if (key & BX_KEY_RELEASED)
scancode=(unsigned char *)scancodes[(key&0xFF)][BX_KEY_THIS s.kbd_controller.current_scancodes_set].brek;
else
scancode=(unsigned char *)scancodes[(key&0xFF)][BX_KEY_THIS s.kbd_controller.current_scancodes_set].make;
// if we have a removable keyboard installed, we need to call its handler first
if (DEV_optional_key_enq(scancode)) {
return;
}
if (BX_KEY_THIS s.kbd_controller.scancodes_translate) {
// Translate before send
Bit8u escaped=0x00;
for (i=0; i<strlen((const char *)scancode); i++) {
if (scancode[i] == 0xF0)
escaped=0x80;
else {
BX_DEBUG(("gen_scancode(): writing translated %02x",translation8042[scancode[i] ] | escaped));
kbd_enQ(translation8042[scancode[i]] | escaped);
escaped=0x00;
}
}
}
else {
// Send raw data
for (i=0; i<strlen((const char *)scancode); i++) {
BX_DEBUG(("gen_scancode(): writing raw %02x",scancode[i]));
kbd_enQ(scancode[i]);
}
}
}
void BX_CPP_AttrRegparmN(1)
bx_keyb_c::set_kbd_clock_enable(Bit8u value)
{
bx_bool prev_kbd_clock_enabled;
if (value==0) {
BX_KEY_THIS s.kbd_controller.kbd_clock_enabled = 0;
} else {
/* is another byte waiting to be sent from the keyboard ? */
prev_kbd_clock_enabled = BX_KEY_THIS s.kbd_controller.kbd_clock_enabled;
BX_KEY_THIS s.kbd_controller.kbd_clock_enabled = 1;
if (prev_kbd_clock_enabled==0 && BX_KEY_THIS s.kbd_controller.outb==0) {
activate_timer();
}
}
}
void bx_keyb_c::set_aux_clock_enable(Bit8u value)
{
bx_bool prev_aux_clock_enabled;
BX_DEBUG(("set_aux_clock_enable(%u)", (unsigned) value));
if (value==0) {
BX_KEY_THIS s.kbd_controller.aux_clock_enabled = 0;
} else {
/* is another byte waiting to be sent from the keyboard ? */
prev_aux_clock_enabled = BX_KEY_THIS s.kbd_controller.aux_clock_enabled;
BX_KEY_THIS s.kbd_controller.aux_clock_enabled = 1;
if (prev_aux_clock_enabled==0 && BX_KEY_THIS s.kbd_controller.outb==0)
activate_timer();
}
}
Bit8u bx_keyb_c::get_kbd_enable(void)
{
BX_DEBUG(("get_kbd_enable(): getting kbd_clock_enabled of: %02x",
(unsigned) BX_KEY_THIS s.kbd_controller.kbd_clock_enabled));
return(BX_KEY_THIS s.kbd_controller.kbd_clock_enabled);
}
void bx_keyb_c::controller_enQ(Bit8u data, unsigned source)
{
// source is 0 for keyboard, 1 for mouse
BX_DEBUG(("controller_enQ(%02x) source=%02x", (unsigned) data,source));
// see if we need to Q this byte from the controller
// remember this includes mouse bytes.
if (BX_KEY_THIS s.kbd_controller.outb) {
if (BX_KEY_THIS s.controller_Qsize >= BX_KBD_CONTROLLER_QSIZE)
BX_PANIC(("controller_enq(): controller_Q full!"));
BX_KEY_THIS s.controller_Q[BX_KEY_THIS s.controller_Qsize++] = data;
BX_KEY_THIS s.controller_Qsource = source;
return;
}
// the Q is empty
if (source == 0) { // keyboard
BX_KEY_THIS s.kbd_controller.kbd_output_buffer = data;
BX_KEY_THIS s.kbd_controller.outb = 1;
BX_KEY_THIS s.kbd_controller.auxb = 0;
BX_KEY_THIS s.kbd_controller.inpb = 0;
if (BX_KEY_THIS s.kbd_controller.allow_irq1)
BX_KEY_THIS s.kbd_controller.irq1_requested = 1;
} else { // mouse
BX_KEY_THIS s.kbd_controller.aux_output_buffer = data;
BX_KEY_THIS s.kbd_controller.outb = 1;
BX_KEY_THIS s.kbd_controller.auxb = 1;
BX_KEY_THIS s.kbd_controller.inpb = 0;
if (BX_KEY_THIS s.kbd_controller.allow_irq12)
BX_KEY_THIS s.kbd_controller.irq12_requested = 1;
}
}
void bx_keyb_c::kbd_enQ_imm(Bit8u val)
{
if (BX_KEY_THIS s.kbd_internal_buffer.num_elements >= BX_KBD_ELEMENTS) {
BX_PANIC(("internal keyboard buffer full (imm)"));
return;
}
/* enqueue scancode in multibyte internal keyboard buffer */
/*
int tail = (BX_KEY_THIS s.kbd_internal_buffer.head + BX_KEY_THIS s.kbd_internal_buffer.num_elements) %
BX_KBD_ELEMENTS;
*/
BX_KEY_THIS s.kbd_controller.kbd_output_buffer = val;
BX_KEY_THIS s.kbd_controller.outb = 1;
if (BX_KEY_THIS s.kbd_controller.allow_irq1)
BX_KEY_THIS s.kbd_controller.irq1_requested = 1;
}
void bx_keyb_c::kbd_enQ(Bit8u scancode)
{
int tail;
BX_DEBUG(("kbd_enQ(0x%02x)", (unsigned) scancode));
if (BX_KEY_THIS s.kbd_internal_buffer.num_elements >= BX_KBD_ELEMENTS) {
BX_INFO(("internal keyboard buffer full, ignoring scancode.(%02x)",
(unsigned) scancode));
return;
}
/* enqueue scancode in multibyte internal keyboard buffer */
BX_DEBUG(("kbd_enQ: putting scancode 0x%02x in internal buffer",
(unsigned) scancode));
tail = (BX_KEY_THIS s.kbd_internal_buffer.head + BX_KEY_THIS s.kbd_internal_buffer.num_elements) %
BX_KBD_ELEMENTS;
BX_KEY_THIS s.kbd_internal_buffer.buffer[tail] = scancode;
BX_KEY_THIS s.kbd_internal_buffer.num_elements++;
if (!BX_KEY_THIS s.kbd_controller.outb && BX_KEY_THIS s.kbd_controller.kbd_clock_enabled) {
activate_timer();
BX_DEBUG(("activating timer..."));
return;
}
}
bx_bool bx_keyb_c::mouse_enQ_packet(Bit8u b1, Bit8u b2, Bit8u b3, Bit8u b4)
{
int bytes = 3;
if (BX_KEY_THIS s.mouse.im_mode) bytes = 4;
if ((BX_KEY_THIS s.mouse_internal_buffer.num_elements + bytes) >= BX_MOUSE_BUFF_SIZE) {
return(0); /* buffer doesn't have the space */
}
mouse_enQ(b1);
mouse_enQ(b2);
mouse_enQ(b3);
if (BX_KEY_THIS s.mouse.im_mode) mouse_enQ(b4);
return(1);
}
void bx_keyb_c::mouse_enQ(Bit8u mouse_data)
{
int tail;
BX_DEBUG(("mouse_enQ(%02x)", (unsigned) mouse_data));
if (BX_KEY_THIS s.mouse_internal_buffer.num_elements >= BX_MOUSE_BUFF_SIZE) {
BX_ERROR(("[mouse] internal mouse buffer full, ignoring mouse data.(%02x)",
(unsigned) mouse_data));
return;
}
/* enqueue mouse data in multibyte internal mouse buffer */
tail = (BX_KEY_THIS s.mouse_internal_buffer.head + BX_KEY_THIS s.mouse_internal_buffer.num_elements) %
BX_MOUSE_BUFF_SIZE;
BX_KEY_THIS s.mouse_internal_buffer.buffer[tail] = mouse_data;
BX_KEY_THIS s.mouse_internal_buffer.num_elements++;
if (!BX_KEY_THIS s.kbd_controller.outb && BX_KEY_THIS s.kbd_controller.aux_clock_enabled) {
activate_timer();
return;
}
}
void bx_keyb_c::kbd_ctrl_to_kbd(Bit8u value)
{
BX_DEBUG(("controller passed byte %02xh to keyboard", value));
if (BX_KEY_THIS s.kbd_internal_buffer.expecting_typematic) {
BX_KEY_THIS s.kbd_internal_buffer.expecting_typematic = 0;
BX_KEY_THIS s.kbd_internal_buffer.delay = (value >> 5) & 0x03;
switch (BX_KEY_THIS s.kbd_internal_buffer.delay) {
case 0: BX_INFO(("setting delay to 250 mS (unused)")); break;
case 1: BX_INFO(("setting delay to 500 mS (unused)")); break;
case 2: BX_INFO(("setting delay to 750 mS (unused)")); break;
case 3: BX_INFO(("setting delay to 1000 mS (unused)")); break;
}
BX_KEY_THIS s.kbd_internal_buffer.repeat_rate = value & 0x1f;
double cps = 1 /((double)(8 + (value & 0x07)) * (double)exp(log((double)2) * (double)((value >> 3) & 0x03)) * 0.00417);
BX_INFO(("setting repeat rate to %.1f cps (unused)", cps));
kbd_enQ(0xFA); // send ACK
return;
}
if (BX_KEY_THIS s.kbd_internal_buffer.expecting_led_write) {
BX_KEY_THIS s.kbd_internal_buffer.expecting_led_write = 0;
BX_KEY_THIS s.kbd_internal_buffer.led_status = value;
BX_DEBUG(("LED status set to %02x",
(unsigned) BX_KEY_THIS s.kbd_internal_buffer.led_status));
bx_gui->statusbar_setitem(BX_KEY_THIS statusbar_id[0], value & 0x02);
bx_gui->statusbar_setitem(BX_KEY_THIS statusbar_id[1], value & 0x04);
bx_gui->statusbar_setitem(BX_KEY_THIS statusbar_id[2], value & 0x01);
kbd_enQ(0xFA); // send ACK %%%
return;
}
if (BX_KEY_THIS s.kbd_controller.expecting_scancodes_set) {
BX_KEY_THIS s.kbd_controller.expecting_scancodes_set = 0;
if(value != 0) {
if(value < 4) {
BX_KEY_THIS s.kbd_controller.current_scancodes_set = (value-1);
BX_INFO(("Switched to scancode set %d",
(unsigned) BX_KEY_THIS s.kbd_controller.current_scancodes_set + 1));
kbd_enQ(0xFA);
} else {
BX_ERROR(("Received scancodes set out of range: %d", value));
kbd_enQ(0xFF); // send ERROR
}
} else {
// Send ACK (SF patch #1159626)
kbd_enQ(0xFA);
// Send current scancodes set to port 0x60
kbd_enQ(1 + (BX_KEY_THIS s.kbd_controller.current_scancodes_set));
}
return;
}
switch (value) {
case 0x00: // ??? ignore and let OS timeout with no response
kbd_enQ(0xFA); // send ACK %%%
break;
case 0x05: // ???
// (mch) trying to get this to work...
BX_KEY_THIS s.kbd_controller.sysf = 1;
kbd_enQ_imm(0xfe);
break;
case 0xed: // LED Write
BX_KEY_THIS s.kbd_internal_buffer.expecting_led_write = 1;
kbd_enQ_imm(0xFA); // send ACK %%%
break;
case 0xee: // echo
kbd_enQ(0xEE); // return same byte (EEh) as echo diagnostic
break;
case 0xf0: // Select alternate scan code set
BX_KEY_THIS s.kbd_controller.expecting_scancodes_set = 1;
BX_DEBUG(("Expecting scancode set info..."));
kbd_enQ(0xFA); // send ACK
break;
case 0xf2: // identify keyboard
BX_INFO(("identify keyboard command received"));
// XT sends nothing, AT sends ACK
// MFII with translation sends ACK+ABh+41h
// MFII without translation sends ACK+ABh+83h
if (SIM->get_param_enum(BXPN_KBD_TYPE)->get() != BX_KBD_XT_TYPE) {
kbd_enQ(0xFA);
if (SIM->get_param_enum(BXPN_KBD_TYPE)->get() == BX_KBD_MF_TYPE) {
kbd_enQ(0xAB);
if(BX_KEY_THIS s.kbd_controller.scancodes_translate)
kbd_enQ(0x41);
else
kbd_enQ(0x83);
}
}
break;
case 0xf3: // typematic info
BX_KEY_THIS s.kbd_internal_buffer.expecting_typematic = 1;
BX_INFO(("setting typematic info"));
kbd_enQ(0xFA); // send ACK
break;
case 0xf4: // enable keyboard
BX_KEY_THIS s.kbd_internal_buffer.scanning_enabled = 1;
kbd_enQ(0xFA); // send ACK
break;
case 0xf5: // reset keyboard to power-up settings and disable scanning
resetinternals(1);
kbd_enQ(0xFA); // send ACK
BX_KEY_THIS s.kbd_internal_buffer.scanning_enabled = 0;
BX_INFO(("reset-disable command received"));
break;
case 0xf6: // reset keyboard to power-up settings and enable scanning
resetinternals(1);
kbd_enQ(0xFA); // send ACK
BX_KEY_THIS s.kbd_internal_buffer.scanning_enabled = 1;
BX_INFO(("reset-enable command received"));
break;
case 0xfe: // resend. aiiee.
BX_PANIC(("got 0xFE (resend)"));
break;
case 0xff: // reset: internal keyboard reset and afterwards the BAT
BX_DEBUG(("reset command received"));
resetinternals(1);
kbd_enQ(0xFA); // send ACK
BX_KEY_THIS s.kbd_controller.bat_in_progress = 1;
kbd_enQ(0xAA); // BAT test passed
break;
case 0xd3:
kbd_enQ(0xfa);
break;
case 0xf7: // PS/2 Set All Keys To Typematic
case 0xf8: // PS/2 Set All Keys to Make/Break
case 0xf9: // PS/2 PS/2 Set All Keys to Make
case 0xfa: // PS/2 Set All Keys to Typematic Make/Break
case 0xfb: // PS/2 Set Key Type to Typematic
case 0xfc: // PS/2 Set Key Type to Make/Break
case 0xfd: // PS/2 Set Key Type to Make
default:
BX_ERROR(("kbd_ctrl_to_kbd(): got value of 0x%02x", value));
kbd_enQ(0xFE); /* send NACK */
break;
}
}
void bx_keyb_c::timer_handler(void *this_ptr)
{
bx_keyb_c *class_ptr = (bx_keyb_c *)this_ptr;
unsigned retval;
retval=class_ptr->periodic(1);
if(retval&0x01)
DEV_pic_raise_irq(1);
if(retval&0x02)
DEV_pic_raise_irq(12);
}
unsigned bx_keyb_c::periodic(Bit32u usec_delta)
{
/* static int multiple=0; */
static unsigned count_before_paste=0;
Bit8u retval;
UNUSED(usec_delta);
if (BX_KEY_THIS s.kbd_controller.kbd_clock_enabled) {
if(++count_before_paste>=BX_KEY_THIS pastedelay) {
// after the paste delay, consider adding moving more chars
// from the paste buffer to the keyboard buffer.
BX_KEY_THIS service_paste_buf();
count_before_paste=0;
}
}
retval = BX_KEY_THIS s.kbd_controller.irq1_requested | (BX_KEY_THIS s.kbd_controller.irq12_requested << 1);
BX_KEY_THIS s.kbd_controller.irq1_requested = 0;
BX_KEY_THIS s.kbd_controller.irq12_requested = 0;
if (BX_KEY_THIS s.kbd_controller.timer_pending == 0) {
return(retval);
}
if (usec_delta >= BX_KEY_THIS s.kbd_controller.timer_pending) {
BX_KEY_THIS s.kbd_controller.timer_pending = 0;
} else {
BX_KEY_THIS s.kbd_controller.timer_pending -= usec_delta;
return(retval);
}
if (BX_KEY_THIS s.kbd_controller.outb) {
return(retval);
}
/* nothing in outb, look for possible data xfer from keyboard or mouse */
if (BX_KEY_THIS s.kbd_internal_buffer.num_elements &&
(BX_KEY_THIS s.kbd_controller.kbd_clock_enabled || BX_KEY_THIS s.kbd_controller.bat_in_progress)) {
BX_DEBUG(("service_keyboard: key in internal buffer waiting"));
BX_KEY_THIS s.kbd_controller.kbd_output_buffer =
BX_KEY_THIS s.kbd_internal_buffer.buffer[BX_KEY_THIS s.kbd_internal_buffer.head];
BX_KEY_THIS s.kbd_controller.outb = 1;
// commented out since this would override the current state of the
// mouse buffer flag - no bug seen - just seems wrong (das)
// BX_KEY_THIS s.kbd_controller.auxb = 0;
BX_KEY_THIS s.kbd_internal_buffer.head = (BX_KEY_THIS s.kbd_internal_buffer.head + 1) %
BX_KBD_ELEMENTS;
BX_KEY_THIS s.kbd_internal_buffer.num_elements--;
if (BX_KEY_THIS s.kbd_controller.allow_irq1)
BX_KEY_THIS s.kbd_controller.irq1_requested = 1;
} else {
create_mouse_packet(0);
if (BX_KEY_THIS s.kbd_controller.aux_clock_enabled && BX_KEY_THIS s.mouse_internal_buffer.num_elements) {
BX_DEBUG(("service_keyboard: key(from mouse) in internal buffer waiting"));
BX_KEY_THIS s.kbd_controller.aux_output_buffer =
BX_KEY_THIS s.mouse_internal_buffer.buffer[BX_KEY_THIS s.mouse_internal_buffer.head];
BX_KEY_THIS s.kbd_controller.outb = 1;
BX_KEY_THIS s.kbd_controller.auxb = 1;
BX_KEY_THIS s.mouse_internal_buffer.head = (BX_KEY_THIS s.mouse_internal_buffer.head + 1) %
BX_MOUSE_BUFF_SIZE;
BX_KEY_THIS s.mouse_internal_buffer.num_elements--;
if (BX_KEY_THIS s.kbd_controller.allow_irq12)
BX_KEY_THIS s.kbd_controller.irq12_requested = 1;
} else {
BX_DEBUG(("service_keyboard(): no keys waiting"));
}
}
return(retval);
}
void bx_keyb_c::activate_timer(void)
{
if (BX_KEY_THIS s.kbd_controller.timer_pending == 0) {
BX_KEY_THIS s.kbd_controller.timer_pending = 1;
}
}
void bx_keyb_c::kbd_ctrl_to_mouse(Bit8u value)
{
// if we are not using a ps2 mouse, some of the following commands need to return different values
bx_bool is_ps2 = 0;
if ((BX_KEY_THIS s.mouse.type == BX_MOUSE_TYPE_PS2) ||
(BX_KEY_THIS s.mouse.type == BX_MOUSE_TYPE_IMPS2)) is_ps2 = 1;
BX_DEBUG(("MOUSE: kbd_ctrl_to_mouse(%02xh)", (unsigned) value));
BX_DEBUG((" enable = %u", (unsigned) BX_KEY_THIS s.mouse.enable));
BX_DEBUG((" allow_irq12 = %u",
(unsigned) BX_KEY_THIS s.kbd_controller.allow_irq12));
BX_DEBUG((" aux_clock_enabled = %u",
(unsigned) BX_KEY_THIS s.kbd_controller.aux_clock_enabled));
// an ACK (0xFA) is always the first response to any valid input
// received from the system other than Set-Wrap-Mode & Resend-Command
if (BX_KEY_THIS s.kbd_controller.expecting_mouse_parameter) {
BX_KEY_THIS s.kbd_controller.expecting_mouse_parameter = 0;
switch (BX_KEY_THIS s.kbd_controller.last_mouse_command) {
case 0xf3: // Set Mouse Sample Rate
BX_KEY_THIS s.mouse.sample_rate = value;
BX_DEBUG(("mouse: sampling rate set: %d Hz", value));
if ((value == 200) && (!BX_KEY_THIS s.mouse.im_request)) {
BX_KEY_THIS s.mouse.im_request = 1;
} else if ((value == 100) && (BX_KEY_THIS s.mouse.im_request == 1)) {
BX_KEY_THIS s.mouse.im_request = 2;
} else if ((value == 80) && (BX_KEY_THIS s.mouse.im_request == 2)) {
if (BX_KEY_THIS s.mouse.type == BX_MOUSE_TYPE_IMPS2) {
BX_INFO(("wheel mouse mode enabled"));
BX_KEY_THIS s.mouse.im_mode = 1;
} else {
BX_INFO(("wheel mouse mode request rejected"));
}
BX_KEY_THIS s.mouse.im_request = 0;
} else {
BX_KEY_THIS s.mouse.im_request = 0;
}
controller_enQ(0xFA, 1); // ack
break;
case 0xe8: // Set Mouse Resolution
switch (value) {
case 0:
BX_KEY_THIS s.mouse.resolution_cpmm = 1;
break;
case 1:
BX_KEY_THIS s.mouse.resolution_cpmm = 2;
break;
case 2:
BX_KEY_THIS s.mouse.resolution_cpmm = 4;
break;
case 3:
BX_KEY_THIS s.mouse.resolution_cpmm = 8;
break;
default:
BX_PANIC(("mouse: unknown resolution %d", value));
break;
}
BX_DEBUG(("mouse: resolution set to %d counts per mm",
BX_KEY_THIS s.mouse.resolution_cpmm));
controller_enQ(0xFA, 1); // ack
break;
default:
BX_PANIC(("MOUSE: unknown last command (%02xh)", (unsigned) BX_KEY_THIS s.kbd_controller.last_mouse_command));
}
} else {
BX_KEY_THIS s.kbd_controller.expecting_mouse_parameter = 0;
BX_KEY_THIS s.kbd_controller.last_mouse_command = value;
// test for wrap mode first
if (BX_KEY_THIS s.mouse.mode == MOUSE_MODE_WRAP) {
// if not a reset command or reset wrap mode
// then just echo the byte.
if ((value != 0xff) && (value != 0xec)) {
BX_DEBUG(("mouse: wrap mode: ignoring command 0x%02x",value));
controller_enQ(value, 1);
// bail out
return;
}
}
switch (value) {
case 0xe6: // Set Mouse Scaling to 1:1
controller_enQ(0xFA, 1); // ACK
BX_KEY_THIS s.mouse.scaling = 2;
BX_DEBUG(("mouse: scaling set to 1:1"));
break;
case 0xe7: // Set Mouse Scaling to 2:1
controller_enQ(0xFA, 1); // ACK
BX_KEY_THIS s.mouse.scaling = 2;
BX_DEBUG(("mouse: scaling set to 2:1"));
break;
case 0xe8: // Set Mouse Resolution
controller_enQ(0xFA, 1); // ACK
BX_KEY_THIS s.kbd_controller.expecting_mouse_parameter = 1;
break;
case 0xea: // Set Stream Mode
BX_DEBUG(("mouse: stream mode on"));
BX_KEY_THIS s.mouse.mode = MOUSE_MODE_STREAM;
controller_enQ(0xFA, 1); // ACK
break;
case 0xec: // Reset Wrap Mode
// unless we are in wrap mode ignore the command
if (BX_KEY_THIS s.mouse.mode == MOUSE_MODE_WRAP) {
BX_DEBUG(("mouse: wrap mode off"));
// restore previous mode except disable stream mode reporting.
// ### TODO disabling reporting in stream mode
BX_KEY_THIS s.mouse.mode = BX_KEY_THIS s.mouse.saved_mode;
controller_enQ(0xFA, 1); // ACK
}
break;
case 0xee: // Set Wrap Mode
// ### TODO flush output queue.
// ### TODO disable interrupts if in stream mode.
BX_DEBUG(("mouse: wrap mode on"));
BX_KEY_THIS s.mouse.saved_mode = BX_KEY_THIS s.mouse.mode;
BX_KEY_THIS s.mouse.mode = MOUSE_MODE_WRAP;
controller_enQ(0xFA, 1); // ACK
break;
case 0xf0: // Set Remote Mode (polling mode, i.e. not stream mode.)
BX_DEBUG(("mouse: remote mode on"));
// ### TODO should we flush/discard/ignore any already queued packets?
BX_KEY_THIS s.mouse.mode = MOUSE_MODE_REMOTE;
controller_enQ(0xFA, 1); // ACK
break;
case 0xf2: // Read Device Type
controller_enQ(0xFA, 1); // ACK
if (BX_KEY_THIS s.mouse.im_mode)
controller_enQ(0x03, 1); // Device ID (wheel z-mouse)
else
controller_enQ(0x00, 1); // Device ID (standard)
BX_DEBUG(("mouse: read mouse ID"));
break;
case 0xf3: // Set Mouse Sample Rate (sample rate written to port 60h)
controller_enQ(0xFA, 1); // ACK
BX_KEY_THIS s.kbd_controller.expecting_mouse_parameter = 1;
break;
case 0xf4: // Enable (in stream mode)
// is a mouse present?
if (is_ps2) {
BX_KEY_THIS s.mouse.enable = 1;
controller_enQ(0xFA, 1); // ACK
BX_DEBUG(("mouse enabled (stream mode)"));
} else {
// a mouse isn't present. We need to return a 0xFE (resend) instead of a 0xFA (ACK)
controller_enQ(0xFE, 1); // RESEND
BX_KEY_THIS s.kbd_controller.tim = 1;
}
break;
case 0xf5: // Disable (in stream mode)
BX_KEY_THIS s.mouse.enable = 0;
controller_enQ(0xFA, 1); // ACK
BX_DEBUG(("mouse disabled (stream mode)"));
break;
case 0xf6: // Set Defaults
BX_KEY_THIS s.mouse.sample_rate = 100; /* reports per second (default) */
BX_KEY_THIS s.mouse.resolution_cpmm = 4; /* 4 counts per millimeter (default) */
BX_KEY_THIS s.mouse.scaling = 1; /* 1:1 (default) */
BX_KEY_THIS s.mouse.enable = 0;
BX_KEY_THIS s.mouse.mode = MOUSE_MODE_STREAM;
controller_enQ(0xFA, 1); // ACK
BX_DEBUG(("mouse: set defaults"));
break;
case 0xff: // Reset
// is a mouse present?
if (is_ps2) {
BX_KEY_THIS s.mouse.sample_rate = 100; /* reports per second (default) */
BX_KEY_THIS s.mouse.resolution_cpmm = 4; /* 4 counts per millimeter (default) */
BX_KEY_THIS s.mouse.scaling = 1; /* 1:1 (default) */
BX_KEY_THIS s.mouse.mode = MOUSE_MODE_RESET;
BX_KEY_THIS s.mouse.enable = 0;
if (BX_KEY_THIS s.mouse.im_mode)
BX_INFO(("wheel mouse mode disabled"));
BX_KEY_THIS s.mouse.im_mode = 0;
/* (mch) NT expects an ack here */
controller_enQ(0xFA, 1); // ACK
controller_enQ(0xAA, 1); // completion code
controller_enQ(0x00, 1); // ID code (standard after reset)
BX_DEBUG(("mouse reset"));
} else {
// a mouse isn't present. We need to return a 0xFE (resend) instead of a 0xFA (ACK)
controller_enQ(0xFE, 1); // RESEND
BX_KEY_THIS s.kbd_controller.tim = 1;
}
break;
case 0xe9: // Get mouse information
// should we ack here? (mch): Yes
controller_enQ(0xFA, 1); // ACK
controller_enQ(BX_KEY_THIS s.mouse.get_status_byte(), 1); // status
controller_enQ(BX_KEY_THIS s.mouse.get_resolution_byte(), 1); // resolution
controller_enQ(BX_KEY_THIS s.mouse.sample_rate, 1); // sample rate
BX_DEBUG(("mouse: get mouse information"));
break;
case 0xeb: // Read Data (send a packet when in Remote Mode)
controller_enQ(0xFA, 1); // ACK
// perhaps we should be adding some movement here.
mouse_enQ_packet(((BX_KEY_THIS s.mouse.button_status & 0x0f) | 0x08),
0x00, 0x00, 0x00); // bit3 of first byte always set
//assumed we really aren't in polling mode, a rather odd assumption.
BX_ERROR(("mouse: Warning: Read Data command partially supported."));
break;
case 0xbb: // OS/2 Warp 3 uses this command
BX_ERROR(("mouse: ignoring 0xbb command"));
break;
default:
// If PS/2 mouse present, send NACK for unknown commands, otherwise ignore
if (is_ps2) {
BX_ERROR(("kbd_ctrl_to_mouse(): got value of 0x%02x", value));
controller_enQ(0xFE, 1); /* send NACK */
}
}
}
}
void bx_keyb_c::create_mouse_packet(bx_bool force_enq)
{
Bit8u b1, b2, b3, b4;
if(BX_KEY_THIS s.mouse_internal_buffer.num_elements && !force_enq)
return;
Bit16s delta_x = BX_KEY_THIS s.mouse.delayed_dx;
Bit16s delta_y = BX_KEY_THIS s.mouse.delayed_dy;
Bit8u button_state=BX_KEY_THIS s.mouse.button_status | 0x08;
if(!force_enq && !delta_x && !delta_y) {
return;
}
if(delta_x>254) delta_x=254;
if(delta_x<-254) delta_x=-254;
if(delta_y>254) delta_y=254;
if(delta_y<-254) delta_y=-254;
b1 = (button_state & 0x0f) | 0x08; // bit3 always set
if ((delta_x>=0) && (delta_x<=255)) {
b2 = (Bit8u) delta_x;
BX_KEY_THIS s.mouse.delayed_dx-=delta_x;
}
else if (delta_x > 255) {
b2 = (Bit8u) 0xff;
BX_KEY_THIS s.mouse.delayed_dx-=255;
}
else if (delta_x >= -256) {
b2 = (Bit8u) delta_x;
b1 |= 0x10;
BX_KEY_THIS s.mouse.delayed_dx-=delta_x;
}
else {
b2 = (Bit8u) 0x00;
b1 |= 0x10;
BX_KEY_THIS s.mouse.delayed_dx+=256;
}
if ((delta_y>=0) && (delta_y<=255)) {
b3 = (Bit8u) delta_y;
BX_KEY_THIS s.mouse.delayed_dy-=delta_y;
}
else if (delta_y > 255) {
b3 = (Bit8u) 0xff;
BX_KEY_THIS s.mouse.delayed_dy-=255;
}
else if (delta_y >= -256) {
b3 = (Bit8u) delta_y;
b1 |= 0x20;
BX_KEY_THIS s.mouse.delayed_dy-=delta_y;
}
else {
b3 = (Bit8u) 0x00;
b1 |= 0x20;
BX_KEY_THIS s.mouse.delayed_dy+=256;
}
b4 = (Bit8u) -BX_KEY_THIS s.mouse.delayed_dz;
mouse_enQ_packet(b1, b2, b3, b4);
}
void bx_keyb_c::mouse_enabled_changed_static(void *dev, bx_bool enabled)
{
((bx_keyb_c*)dev)->mouse_enabled_changed(enabled);
}
void bx_keyb_c::mouse_enabled_changed(bx_bool enabled)
{
if (BX_KEY_THIS s.mouse.delayed_dx || BX_KEY_THIS s.mouse.delayed_dy ||
BX_KEY_THIS s.mouse.delayed_dz) {
create_mouse_packet(1);
}
BX_KEY_THIS s.mouse.delayed_dx=0;
BX_KEY_THIS s.mouse.delayed_dy=0;
BX_KEY_THIS s.mouse.delayed_dz=0;
BX_DEBUG(("PS/2 mouse %s", enabled?"enabled":"disabled"));
}
void bx_keyb_c::mouse_enq_static(void *dev, int delta_x, int delta_y, int delta_z, unsigned button_state)
{
((bx_keyb_c*)dev)->mouse_motion(delta_x, delta_y, delta_z, button_state);
}
void bx_keyb_c::mouse_motion(int delta_x, int delta_y, int delta_z, unsigned button_state)
{
bx_bool force_enq=0;
// don't generate interrupts if we are in remote mode.
if (BX_KEY_THIS s.mouse.mode == MOUSE_MODE_REMOTE)
// is there any point in doing any work if we don't act on the result
// so go home.
return;
// Note: enable only applies in STREAM MODE.
if (BX_KEY_THIS s.mouse.enable==0)
return;
// scale down the motion
if ((delta_x < -1) || (delta_x > 1))
delta_x /= 2;
if ((delta_y < -1) || (delta_y > 1))
delta_y /= 2;
if (!BX_KEY_THIS s.mouse.im_mode)
delta_z = 0;
#ifdef VERBOSE_KBD_DEBUG
if (delta_x != 0 || delta_y != 0 || delta_z != 0)
BX_DEBUG(("[mouse] Dx=%d Dy=%d Dz=%d", delta_x, delta_y, delta_z));
#endif /* ifdef VERBOSE_KBD_DEBUG */
if ((delta_x==0) && (delta_y==0) && (delta_z==0) && (BX_KEY_THIS s.mouse.button_status == (button_state & 0x7))) {
BX_DEBUG(("Ignoring useless mouse_motion call:"));
BX_DEBUG(("This should be fixed in the gui code."));
return;
}
if ((BX_KEY_THIS s.mouse.button_status != (button_state & 0x7)) || delta_z) {
force_enq=1;
}
BX_KEY_THIS s.mouse.button_status = button_state & 0x7;
if(delta_x>255) delta_x=255;
if(delta_y>255) delta_y=255;
if(delta_x<-256) delta_x=-256;
if(delta_y<-256) delta_y=-256;
BX_KEY_THIS s.mouse.delayed_dx+=delta_x;
BX_KEY_THIS s.mouse.delayed_dy+=delta_y;
BX_KEY_THIS s.mouse.delayed_dz = delta_z;
if((BX_KEY_THIS s.mouse.delayed_dx>255)||
(BX_KEY_THIS s.mouse.delayed_dx<-256)||
(BX_KEY_THIS s.mouse.delayed_dy>255)||
(BX_KEY_THIS s.mouse.delayed_dy<-256)) {
force_enq=1;
}
create_mouse_packet(force_enq);
}
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