d0fc1da99b
(env is not fixed) Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@289
339 lines
8.4 KiB
C++
339 lines
8.4 KiB
C++
/*
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* Copyright (C) 2002 The DOSBox Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Library General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include <string.h>
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#include "dosbox.h"
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#include "keyboard.h"
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#include "inout.h"
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#include "pic.h"
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#include "mixer.h"
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#define KEYBUFSIZE 32
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enum KeyCommands {
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CMD_NONE,
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CMD_SETLEDS,
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CMD_SETTYPERATE
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};
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struct KeyEvent {
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Bitu type;
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Bitu state;
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KEYBOARD_EventHandler * handler;
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KeyEvent * next;
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};
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struct KeyBlock {
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Bit8u buf[KEYBUFSIZE];
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Bitu buf_pos;
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Bitu buf_used;
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Bitu write_state;
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KeyCommands command;
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bool read_active;
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bool enabled;
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};
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static KeyBlock keyb;
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static Bitu shift_state=0;
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static Bit8u cur_scancode;
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static Bit8u port_61_data;
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//TODO Are these initialized at 0 at startup? Hope so :)
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static KeyEvent * event_handlers[KBD_LAST];
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void KEYBOARD_ClrBuffer(void) {
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keyb.buf_used=0;
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keyb.buf_pos=0;
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keyb.read_active=false;
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PIC_DeActivateIRQ(1);
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}
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void KEYBOARD_ReadBuffer(void) {
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if (keyb.read_active) return;
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if (keyb.buf_used) {
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keyb.buf_used--;
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keyb.buf_pos++;
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if (keyb.buf_pos>=KEYBUFSIZE) keyb.buf_pos=0;
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}
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if (keyb.buf_used) {
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keyb.read_active=true;
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PIC_ActivateIRQ(1);
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}
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}
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void KEYBOARD_AddCode(Bit8u code) {
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if (keyb.buf_used<KEYBUFSIZE) {
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Bitu start=keyb.buf_pos+keyb.buf_used;
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keyb.buf_used++;
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if (start>=KEYBUFSIZE) start-=KEYBUFSIZE;
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keyb.buf[start]=code;
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keyb.read_active=true;
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}
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if (keyb.buf_used>0) PIC_ActivateIRQ(1);
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}
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static Bit8u read_p60(Bit32u port) {
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/* Reading this port signals that IRQ can be lowered */
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Bit8u val=keyb.buf[keyb.buf_pos];
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keyb.read_active=false;
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return keyb.buf[keyb.buf_pos];
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}
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static void write_p60(Bit32u port,Bit8u val) {
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switch (keyb.command) {
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case CMD_NONE: /* None */
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KEYBOARD_ClrBuffer();
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switch (val) {
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case 0xed: /* Set Leds */
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keyb.command=CMD_SETLEDS;
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KEYBOARD_AddCode(0xfa); /* Acknowledge */
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break;
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case 0xee: /* Echo */
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KEYBOARD_AddCode(0xee);
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break;
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case 0xf2: /* Identify keyboard */
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/* AT's just send acknowledge */
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KEYBOARD_AddCode(0xfa); /* Acknowledge */
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break;
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case 0xf3: /* Typematic rate programming */
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keyb.command=CMD_SETTYPERATE;
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KEYBOARD_AddCode(0xfa); /* Acknowledge */
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break;
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default:
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LOG_DEBUG("KEYB:60:Unhandled command %X",val);
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}
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return;
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case CMD_SETTYPERATE:
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case CMD_SETLEDS:
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keyb.command=CMD_NONE;
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KEYBOARD_AddCode(0xfa); /* Acknowledge */
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break;
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}
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}
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static Bit8u read_p61(Bit32u port) {
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port_61_data^=0x20;
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return port_61_data;
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};
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static void KEYBOARD_IRQHandler(void) {
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if (!keyb.read_active) KEYBOARD_ReadBuffer();
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}
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static void write_p61(Bit32u port,Bit8u val) {
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port_61_data=val;
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if (val & 128) if (!keyb.read_active) KEYBOARD_ReadBuffer();
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if ((val & 3)==3) {
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PCSPEAKER_Enable(true);
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} else {
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PCSPEAKER_Enable(false);
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}
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}
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static void write_p64(Bit32u port,Bit8u val) {
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switch (val) {
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case 0:
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default:
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LOG_DEBUG("Port 64 write with val %d",val);
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break;
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}
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}
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static Bit8u read_p64(Bit32u port) {
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return 0x1c | (keyb.read_active ? 0x1 : 0x0);
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};
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void KEYBOARD_AddEvent(Bitu keytype,Bitu state,KEYBOARD_EventHandler * handler) {
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KeyEvent * newevent=new KeyEvent;
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/* Add the event in the correct key structure */
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if (keytype>=KBD_LAST) {
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LOG_ERROR("KEYBOARD:Illegal key %d for handler",keytype);
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}
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newevent->next=event_handlers[keytype];
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event_handlers[keytype]=newevent;
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newevent->type=keytype;
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newevent->state=state;
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newevent->handler=handler;
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};
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void KEYBOARD_AddKey(Bitu keytype,bool pressed) {
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bool extend=false;
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Bit8u ret=0;
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switch (keytype) {
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case KBD_esc:ret=1;break;
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case KBD_1:ret=2;break;
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case KBD_2:ret=3;break;
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case KBD_3:ret=4;break;
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case KBD_4:ret=5;break;
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case KBD_5:ret=6;break;
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case KBD_6:ret=7;break;
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case KBD_7:ret=8;break;
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case KBD_8:ret=9;break;
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case KBD_9:ret=10;break;
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case KBD_0:ret=11;break;
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case KBD_minus:ret=12;break;
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case KBD_equals:ret=13;break;
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case KBD_backspace:ret=14;break;
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case KBD_tab:ret=15;break;
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case KBD_q:ret=16;break;
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case KBD_w:ret=17;break;
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case KBD_e:ret=18;break;
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case KBD_r:ret=19;break;
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case KBD_t:ret=20;break;
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case KBD_y:ret=21;break;
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case KBD_u:ret=22;break;
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case KBD_i:ret=23;break;
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case KBD_o:ret=24;break;
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case KBD_p:ret=25;break;
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case KBD_leftbracket:ret=26;break;
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case KBD_rightbracket:ret=27;break;
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case KBD_enter:ret=28;break;
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case KBD_leftctrl:ret=29;
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shift_state=(shift_state&~CTRL_PRESSED)|(pressed ? CTRL_PRESSED:0);
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break;
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case KBD_a:ret=30;break;
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case KBD_s:ret=31;break;
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case KBD_d:ret=32;break;
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case KBD_f:ret=33;break;
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case KBD_g:ret=34;break;
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case KBD_h:ret=35;break;
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case KBD_j:ret=36;break;
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case KBD_k:ret=37;break;
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case KBD_l:ret=38;break;
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case KBD_semicolon:ret=39;break;
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case KBD_quote:ret=40;break;
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case KBD_grave:ret=41;break;
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case KBD_leftshift:ret=42;
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shift_state=(shift_state&~SHIFT_PRESSED)|(pressed ? SHIFT_PRESSED:0);
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break;
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case KBD_backslash:ret=43;break;
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case KBD_z:ret=44;break;
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case KBD_x:ret=45;break;
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case KBD_c:ret=46;break;
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case KBD_v:ret=47;break;
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case KBD_b:ret=48;break;
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case KBD_n:ret=49;break;
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case KBD_m:ret=50;break;
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case KBD_comma:ret=51;break;
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case KBD_period:ret=52;break;
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case KBD_slash:ret=53;break;
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case KBD_rightshift:ret=54;break;
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case KBD_kpmultiply:ret=55;break;
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case KBD_leftalt:ret=56;
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shift_state=(shift_state&~ALT_PRESSED)|(pressed ? ALT_PRESSED:0);
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break;
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case KBD_space:ret=57;break;
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case KBD_capslock:ret=58;break;
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case KBD_f1:ret=59;break;
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case KBD_f2:ret=60;break;
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case KBD_f3:ret=61;break;
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case KBD_f4:ret=62;break;
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case KBD_f5:ret=63;break;
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case KBD_f6:ret=64;break;
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case KBD_f7:ret=65;break;
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case KBD_f8:ret=66;break;
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case KBD_f9:ret=67;break;
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case KBD_f10:ret=68;break;
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case KBD_numlock:ret=69;break;
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case KBD_scrolllock:ret=70;break;
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case KBD_kp7:ret=71;break;
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case KBD_kp8:ret=72;break;
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case KBD_kp9:ret=73;break;
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case KBD_kpminus:ret=74;break;
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case KBD_kp4:ret=75;break;
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case KBD_kp5:ret=76;break;
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case KBD_kp6:ret=77;break;
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case KBD_kpplus:ret=78;break;
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case KBD_kp1:ret=79;break;
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case KBD_kp2:ret=80;break;
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case KBD_kp3:ret=81;break;
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case KBD_kp0:ret=82;break;
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case KBD_kpperiod:ret=83;break;
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case KBD_f11:ret=87;break;
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case KBD_f12:ret=88;break;
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//The Extended keys
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case KBD_kpenter:extend=true;ret=28;break;
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case KBD_rightctrl:extend=true;ret=29;break;
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case KBD_kpslash:extend=true;ret=53;break;
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case KBD_rightalt:extend=true;ret=56;break;
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case KBD_home:extend=true;ret=71;break;
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case KBD_up:extend=true;ret=72;break;
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case KBD_pageup:extend=true;ret=73;break;
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case KBD_left:extend=true;ret=75;break;
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case KBD_right:extend=true;ret=77;break;
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case KBD_end:extend=true;ret=79;break;
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case KBD_down:extend=true;ret=80;break;
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case KBD_pagedown:extend=true;ret=81;break;
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case KBD_insert:extend=true;ret=82;break;
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case KBD_delete:extend=true;ret=83;break;
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default:
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E_Exit("Unsopperted key press");
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break;
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};
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/* check for active key events */
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KeyEvent * checkevent=event_handlers[keytype];
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while (checkevent) {
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if ((shift_state & checkevent->state)==checkevent->state) {
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if (checkevent->type==keytype && pressed) {
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(*checkevent->handler)();
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return;
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}
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if (checkevent->type==keytype) return;
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}
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checkevent=checkevent->next;
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}
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if (extend) KEYBOARD_AddCode(224);
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if (!pressed) ret+=128;
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KEYBOARD_AddCode(ret);
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};
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void KEYBOARD_Init(Section* sec) {
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IO_RegisterWriteHandler(0x60,write_p60,"Keyboard");
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IO_RegisterReadHandler(0x60,read_p60,"Keyboard");
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IO_RegisterWriteHandler(0x61,write_p61,"Keyboard");
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IO_RegisterReadHandler(0x61,read_p61,"Keyboard");
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IO_RegisterWriteHandler(0x64,write_p64,"Keyboard");
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IO_RegisterReadHandler(0x64,read_p64,"Keyboard");
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port_61_data=1; /* Speaker control through PIT and speaker disabled */
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// memset(&event_handlers,0,sizeof(event_handlers));
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/* Clear the keyb struct */
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keyb.enabled=true;
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keyb.command=CMD_NONE;
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KEYBOARD_ClrBuffer();
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PIC_RegisterIRQ(1,KEYBOARD_IRQHandler,"KEYBOARD");
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};
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