/* * Copyright (C) 2002-2004 The DOSBox Team * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include "dosbox.h" #include "callback.h" #include "mem.h" #include "bios.h" #include "keyboard.h" #include "regs.h" #include "inout.h" static Bitu call_int16,call_irq1; /* Nice table from BOCHS i should feel bad for ripping this */ #define none 0 #define MAX_SCAN_CODE 0x53 static struct { Bit16u normal; Bit16u shift; Bit16u control; Bit16u alt; } scan_to_scanascii[MAX_SCAN_CODE + 1] = { { none, none, none, none }, { 0x011b, 0x011b, 0x011b, 0x0100 }, /* escape */ { 0x0231, 0x0221, none, 0x7800 }, /* 1! */ { 0x0332, 0x0340, 0x0300, 0x7900 }, /* 2@ */ { 0x0433, 0x0423, none, 0x7a00 }, /* 3# */ { 0x0534, 0x0524, none, 0x7b00 }, /* 4$ */ { 0x0635, 0x0625, none, 0x7c00 }, /* 5% */ { 0x0736, 0x075e, 0x071e, 0x7d00 }, /* 6^ */ { 0x0837, 0x0826, none, 0x7e00 }, /* 7& */ { 0x0938, 0x092a, none, 0x7f00 }, /* 8* */ { 0x0a39, 0x0a28, none, 0x8000 }, /* 9( */ { 0x0b30, 0x0b29, none, 0x8100 }, /* 0) */ { 0x0c2d, 0x0c5f, 0x0c1f, 0x8200 }, /* -_ */ { 0x0d3d, 0x0d2b, none, 0x8300 }, /* =+ */ { 0x0e08, 0x0e08, 0x0e7f, none }, /* backspace */ { 0x0f09, 0x0f00, none, none }, /* tab */ { 0x1071, 0x1051, 0x1011, 0x1000 }, /* Q */ { 0x1177, 0x1157, 0x1117, 0x1100 }, /* W */ { 0x1265, 0x1245, 0x1205, 0x1200 }, /* E */ { 0x1372, 0x1352, 0x1312, 0x1300 }, /* R */ { 0x1474, 0x1454, 0x1414, 0x1400 }, /* T */ { 0x1579, 0x1559, 0x1519, 0x1500 }, /* Y */ { 0x1675, 0x1655, 0x1615, 0x1600 }, /* U */ { 0x1769, 0x1749, 0x1709, 0x1700 }, /* I */ { 0x186f, 0x184f, 0x180f, 0x1800 }, /* O */ { 0x1970, 0x1950, 0x1910, 0x1900 }, /* P */ { 0x1a5b, 0x1a7b, 0x1a1b, none }, /* [{ */ { 0x1b5d, 0x1b7d, 0x1b1d, none }, /* ]} */ { 0x1c0d, 0x1c0d, 0x1c0a, none }, /* Enter */ { none, none, none, none }, /* L Ctrl */ { 0x1e61, 0x1e41, 0x1e01, 0x1e00 }, /* A */ { 0x1f73, 0x1f53, 0x1f13, 0x1f00 }, /* S */ { 0x2064, 0x2044, 0x2004, 0x2000 }, /* D */ { 0x2166, 0x2146, 0x2106, 0x2100 }, /* F */ { 0x2267, 0x2247, 0x2207, 0x2200 }, /* G */ { 0x2368, 0x2348, 0x2308, 0x2300 }, /* H */ { 0x246a, 0x244a, 0x240a, 0x2400 }, /* J */ { 0x256b, 0x254b, 0x250b, 0x2500 }, /* K */ { 0x266c, 0x264c, 0x260c, 0x2600 }, /* L */ { 0x273b, 0x273a, none, none }, /* ;: */ { 0x2827, 0x2822, none, none }, /* '" */ { 0x2960, 0x297e, none, none }, /* `~ */ { none, none, none, none }, /* L shift */ { 0x2b5c, 0x2b7c, 0x2b1c, none }, /* |\ */ { 0x2c7a, 0x2c5a, 0x2c1a, 0x2c00 }, /* Z */ { 0x2d78, 0x2d58, 0x2d18, 0x2d00 }, /* X */ { 0x2e63, 0x2e43, 0x2e03, 0x2e00 }, /* C */ { 0x2f76, 0x2f56, 0x2f16, 0x2f00 }, /* V */ { 0x3062, 0x3042, 0x3002, 0x3000 }, /* B */ { 0x316e, 0x314e, 0x310e, 0x3100 }, /* N */ { 0x326d, 0x324d, 0x320d, 0x3200 }, /* M */ { 0x332c, 0x333c, none, none }, /* ,< */ { 0x342e, 0x343e, none, none }, /* .> */ { 0x352f, 0x353f, none, none }, /* /? */ { none, none, none, none }, /* R Shift */ { 0x372a, 0x372a, none, none }, /* * */ { none, none, none, none }, /* L Alt */ { 0x3920, 0x3920, 0x3920, 0x3920 }, /* space */ { none, none, none, none }, /* caps lock */ { 0x3b00, 0x5400, 0x5e00, 0x6800 }, /* F1 */ { 0x3c00, 0x5500, 0x5f00, 0x6900 }, /* F2 */ { 0x3d00, 0x5600, 0x6000, 0x6a00 }, /* F3 */ { 0x3e00, 0x5700, 0x6100, 0x6b00 }, /* F4 */ { 0x3f00, 0x5800, 0x6200, 0x6c00 }, /* F5 */ { 0x4000, 0x5900, 0x6300, 0x6d00 }, /* F6 */ { 0x4100, 0x5a00, 0x6400, 0x6e00 }, /* F7 */ { 0x4200, 0x5b00, 0x6500, 0x6f00 }, /* F8 */ { 0x4300, 0x5c00, 0x6600, 0x7000 }, /* F9 */ { 0x4400, 0x5d00, 0x6700, 0x7100 }, /* F10 */ { none, none, none, none }, /* Num Lock */ { none, none, none, none }, /* Scroll Lock */ { 0x4700, 0x4737, 0x7700, 0x0007 }, /* 7 Home */ { 0x4800, 0x4838, none, 0x0008 }, /* 8 UP */ { 0x4900, 0x4939, 0x8400, 0x0009 }, /* 9 PgUp */ { 0x4a2d, 0x4a2d, none, none }, /* - */ { 0x4b00, 0x4b34, 0x7300, 0x0004 }, /* 4 Left */ { 0x4c00, 0x4c35, none, 0x0005 }, /* 5 */ { 0x4d00, 0x4d36, 0x7400, 0x0006 }, /* 6 Right */ { 0x4e2b, 0x4e2b, none, none }, /* + */ { 0x4f00, 0x4f31, 0x7500, 0x0001 }, /* 1 End */ { 0x5000, 0x5032, none, 0x0002 }, /* 2 Down */ { 0x5100, 0x5133, 0x7600, 0x0003 }, /* 3 PgDn */ { 0x5200, 0x5230, none, 0x0000 }, /* 0 Ins */ { 0x5300, 0x532e, none, none } /* Del */ }; static void add_key(Bit16u code) { Bit16u start,end,head,tail,ttail; start=mem_readw(BIOS_KEYBOARD_BUFFER_START); end =mem_readw(BIOS_KEYBOARD_BUFFER_END); head =mem_readw(BIOS_KEYBOARD_BUFFER_HEAD); tail =mem_readw(BIOS_KEYBOARD_BUFFER_TAIL); ttail=tail+2; if (ttail>=end) { ttail=start; } /* Check for buffer Full */ //TODO Maybe beeeeeeep or something although that should happend when internal buffer is full if (ttail==head) return; real_writew(0x40,tail,code); mem_writew(BIOS_KEYBOARD_BUFFER_TAIL,ttail); } static Bit16u get_key(void) { Bit16u start,end,head,tail,thead; start=mem_readw(BIOS_KEYBOARD_BUFFER_START); end =mem_readw(BIOS_KEYBOARD_BUFFER_END); head =mem_readw(BIOS_KEYBOARD_BUFFER_HEAD); tail =mem_readw(BIOS_KEYBOARD_BUFFER_TAIL); if (head==tail) return 0; thead=head+2; if (thead>=end) thead=start; mem_writew(BIOS_KEYBOARD_BUFFER_HEAD,thead); return real_readw(0x40,head); } static Bit16u check_key(void) { Bit16u head,tail; head =mem_readw(BIOS_KEYBOARD_BUFFER_HEAD); tail =mem_readw(BIOS_KEYBOARD_BUFFER_TAIL); if (head==tail) return 0; return real_readw(0x40,head); } /* Flag Byte 1 bit 7 =1 INSert active bit 6 =1 Caps Lock active bit 5 =1 Num Lock active bit 4 =1 Scroll Lock active bit 3 =1 either Alt pressed bit 2 =1 either Ctrl pressed bit 1 =1 Left Shift pressed bit 0 =1 Right Shift pressed */ /* Flag Byte 2 bit 7 =1 INSert pressed bit 6 =1 Caps Lock pressed bit 5 =1 Num Lock pressed bit 4 =1 Scroll Lock pressed bit 3 =1 Pause state active bit 2 =1 Sys Req pressed bit 1 =1 Left Alt pressed bit 0 =1 Left Ctrl pressed */ /* Keyboard status byte 3 bit 7 =1 read-ID in progress bit 6 =1 last code read was first of two ID codes bit 5 =1 force Num Lock if read-ID and enhanced keyboard bit 4 =1 enhanced keyboard installed bit 3 =1 Right Alt pressed bit 2 =1 Right Ctrl pressed bit 1 =1 last code read was E0h bit 0 =1 last code read was E1h */ static Bitu IRQ1_Handler(void) { /* handling of the locks key is difficult as sdl only gives states for * numlock capslock. */ /* in reg_al is the scancode */ /* Read the code */ Bitu scancode; //,ascii,mod; #if 1 scancode=reg_al; //IO_Read(0x60); moved out of handler #else /* Old code capable of unicode keys. Dropped Readkey disabled in keyboard.cpp */ KEYBOARD_ReadKey(scancode,ascii,mod); LOG_MSG("Got code %X ascii %C mod %X",scancode,ascii,mod); #endif Bit16u old_ax=reg_ax; reg_flags|=1; reg_ah=0x4f;reg_al=scancode; CALLBACK_RunRealInt(0x15); reg_ax=old_ax;Bit8u flags1,flags2,flags3,leds; if (!(reg_flags&1)) goto irq1_return; flags1=mem_readb(BIOS_KEYBOARD_FLAGS1); flags2=mem_readb(BIOS_KEYBOARD_FLAGS2); flags3=mem_readb(BIOS_KEYBOARD_FLAGS3); leds =mem_readb(BIOS_KEYBOARD_LEDS); flags2&=~(0x40+0x20);//remove numlock/capslock pressed (hack for sdl only reporting states) switch (scancode) { /* First the hard ones */ case 0xfa: /* ack. Do nothing for now */ break; case 0xe1: /* Extended key special. Only pause uses this */ LOG(LOG_KEYBOARD,LOG_ERROR)("someone is putting the pause key in the keyboard buffer"); break; case 0xe0: /* Extended key */ flags3 |=0x02; break; case 0x1d: /* Ctrl Pressed */ flags1 |=0x04; if (flags3 &0x02) flags3 |=0x04; else flags2 |=0x01; break; case 0x9d: /* Ctrl Released */ if (flags3 &0x02) flags3 &=~0x04; else flags2 &=~0x01; if( !( (flags3 &0x04) || (flags2 &0x01) ) ) flags1 &=~0x04; break; case 0x2a: /* Left Shift Pressed */ flags1 |=0x02; break; case 0xaa: /* Left Shift Released */ flags1 &=~0x02; break; case 0x36: /* Right Shift Pressed */ flags1 |=0x01; break; case 0xb6: /* Right Shift Released */ flags1 &=~0x01; break; case 0x38: /* Alt Pressed */ flags1 |=0x08; if (flags3 &0x02) flags3 |=0x08; else flags2 |=0x02; break; case 0xb8: /* Alt Released */ if (flags3 &0x02) flags3 &= ~0x08; else flags2 &= ~0x02; if( !( (flags3 &0x08) || (flags2 &0x02) ) ) { /* Both alt released */ flags1 &= ~0x08; Bit16u token =mem_readb(BIOS_KEYBOARD_TOKEN); if(token != 0){ add_key(token); mem_writeb(BIOS_KEYBOARD_TOKEN,0); } } break; case 0x3a:flags2 |=0x40;flags1 |=0x40;leds |=0x04;break; //SDL gives only the state instead of the toggle /* Caps Lock */ case 0xba:flags1 &=~0x40;leds &=~0x04;break; case 0x45:flags2 |=0x20;flags1 |=0x20;leds |=0x02;break; /* Num Lock */ case 0xc5:flags1 &=~0x20;leds &=~0x02;break; case 0x46:flags2 |=0x10;break; /* Scroll Lock SDL Seems to do this one fine (so break and make codes) */ case 0xc6:flags1 ^=0x10;flags2 &=~0x10;leds ^=0x01;break; // case 0x52:flags2|=128;break;//See numpad /* Insert */ case 0xd2: if(flags3&0x02) { /* Maybe honour the insert on keypad as well */ flags1^=0x80; flags2&=~0x80; break; } else { goto irq1_end;/*Normal release*/ } case 0x47: /* Numpad */ case 0x48: case 0x49: case 0x4b: case 0x4c: case 0x4d: case 0x4f: case 0x50: case 0x51: case 0x52: case 0x53: /* del . Not entirely correct, but works fine */ if(flags3 &0x02) { /*extend key. e.g key above arrows or arrows*/ if(scancode == 0x52) flags2 |=0x80; /* press insert */ add_key((scancode <<8)|0xe0); break; } if(flags1 &0x08) { Bit8u token = mem_readb(BIOS_KEYBOARD_TOKEN); token= token*10 + scan_to_scanascii[scancode].alt; mem_writeb(BIOS_KEYBOARD_TOKEN,token); } else if( ((flags1 &0x3)!=0) ^ ((flags1 &0x20) !=0) ) { add_key(scan_to_scanascii[scancode].shift); } else if (flags1 &0x04) { add_key(scan_to_scanascii[scancode].control); } else add_key(scan_to_scanascii[scancode].normal); break; default: /* Normal Key */ Bit16u asciiscan; /* Now Handle the releasing of keys and see if they match up for a code */ /* Handle the actual scancode */ if (scancode & 0x80) goto irq1_end; if (scancode > MAX_SCAN_CODE) goto irq1_end; if (flags1 & 0x08) { /* Alt is being pressed */ asciiscan=scan_to_scanascii[scancode].alt; #if 0 /* old unicode support disabled*/ } else if (ascii) { asciiscan=(scancode << 8) | ascii; #endif } else if (flags1 & 0x04) { /* Ctrl is being pressed */ asciiscan=scan_to_scanascii[scancode].control; } else if (flags1 & 0x03) { /* Either shift is being pressed */ asciiscan=scan_to_scanascii[scancode].shift; } else { asciiscan=scan_to_scanascii[scancode].normal; } /* cancel shift is letter and capslock active */ if(flags1&64) { if(flags1&3) { /*cancel shift */ if(((asciiscan&0x00ff) >0x40) && ((asciiscan&0x00ff) <0x5b)) asciiscan=scan_to_scanascii[scancode].normal; } else { /* add shift */ if(((asciiscan&0x00ff) >0x60) && ((asciiscan&0x00ff) <0x7b)) asciiscan=scan_to_scanascii[scancode].shift; } } add_key(asciiscan); break; }; irq1_end: if(scancode !=0xe0) flags3 &=~0x02; //Reset 0xE0 Flag mem_writeb(BIOS_KEYBOARD_FLAGS1,flags1); mem_writeb(BIOS_KEYBOARD_FLAGS2,flags2); mem_writeb(BIOS_KEYBOARD_FLAGS3,flags3); mem_writeb(BIOS_KEYBOARD_LEDS,leds); irq1_return: /* IO_Write(0x20,0x20); moved out of handler to be virtualizable */ #if 0 /* Signal the keyboard for next code */ /* In dosbox port 60 reads do this as well */ Bit8u old61=IO_Read(0x61); IO_Write(0x61,old61 | 128); IO_Write(0x64,0xae); #endif return CBRET_NONE; } static Bitu INT16_Handler(void) { Bit16u temp; switch (reg_ah) { case 0x00: /* GET KEYSTROKE */ case 0x10: { //TODO find a more elegant way to do this do { temp=get_key(); if (temp==0) { CALLBACK_Idle();}; } while (temp==0); reg_ax=temp; if(reg_al==0xe0) reg_al=0; //extended key break; } case 0x01: /* CHECK FOR KEYSTROKE */ case 0x11: temp=check_key(); if (temp==0) { CALLBACK_SZF(true); } else { CALLBACK_SZF(false); reg_ax=temp; if(reg_al==0xe0) reg_al=0; //extended key } break; case 0x02: /* GET SHIFT FlAGS */ reg_al=mem_readb(BIOS_KEYBOARD_FLAGS1); break; case 0x03: /* SET TYPEMATIC RATE AND DELAY */ LOG(LOG_BIOS,LOG_ERROR)("INT16:Unhandled Typematic Rate Call %2X BX=%X",reg_al,reg_bx); break; case 0x05: /* STORE KEYSTROKE IN KEYBOARD BUFFER */ //TODO make add_key bool :) add_key(reg_ax); reg_al=0; break; case 0x12: /* GET EXTENDED SHIFT STATES */ reg_al=mem_readb(BIOS_KEYBOARD_FLAGS1); reg_ah=mem_readb(BIOS_KEYBOARD_FLAGS2); break; case 0x55: /* Weird call used by some dos apps */ LOG(LOG_BIOS,LOG_NORMAL)("INT16:55:Word TSR compatible call"); break; default: LOG(LOG_BIOS,LOG_ERROR)("INT16:Unhandled call %02X",reg_ah); break; }; return CBRET_NONE; } static void InitBiosSegment(void) { /* Setup the variables for keyboard in the bios data segment */ mem_writew(BIOS_KEYBOARD_BUFFER_START,0x1e); mem_writew(BIOS_KEYBOARD_BUFFER_END,0x3e); mem_writew(BIOS_KEYBOARD_BUFFER_HEAD,0x1e); mem_writew(BIOS_KEYBOARD_BUFFER_TAIL,0x1e); mem_writeb(BIOS_KEYBOARD_FLAGS1,0); mem_writeb(BIOS_KEYBOARD_FLAGS2,0); mem_writeb(BIOS_KEYBOARD_FLAGS3,16); /* Enhanced keyboard installed */ mem_writeb(BIOS_KEYBOARD_TOKEN,0); mem_writeb(BIOS_KEYBOARD_LEDS,16); } void BIOS_SetupKeyboard(void) { /* Init the variables */ InitBiosSegment(); /* Allocate a callback for int 0x16 and for standard IRQ 1 handler */ call_int16=CALLBACK_Allocate(); call_irq1=CALLBACK_Allocate(); CALLBACK_Setup(call_int16,&INT16_Handler,CB_IRET_STI,"keyboard"); RealSetVec(0x16,CALLBACK_RealPointer(call_int16)); CALLBACK_Setup(call_irq1,&IRQ1_Handler,CB_IRET,"keyboard irq"); RealSetVec(0x9,CALLBACK_RealPointer(call_irq1)); /* bring the all port operations outside the callback */ phys_writeb(CB_BASE+(call_irq1<<4)+0x00,(Bit8u)0x50); // push ax phys_writeb(CB_BASE+(call_irq1<<4)+0x01,(Bit8u)0xe4); // in al, 0x60 phys_writeb(CB_BASE+(call_irq1<<4)+0x02,(Bit8u)0x60); phys_writeb(CB_BASE+(call_irq1<<4)+0x03,(Bit8u)0xFE); //GRP 4 phys_writeb(CB_BASE+(call_irq1<<4)+0x04,(Bit8u)0x38); //Extra Callback instruction phys_writew(CB_BASE+(call_irq1<<4)+0x05,call_irq1); //The immediate word phys_writeb(CB_BASE+(call_irq1<<4)+0x07,(Bit8u)0xb0); // mov al, 0x20 phys_writeb(CB_BASE+(call_irq1<<4)+0x08,(Bit8u)0x20); phys_writeb(CB_BASE+(call_irq1<<4)+0x09,(Bit8u)0xe6); // out 0x20, al phys_writeb(CB_BASE+(call_irq1<<4)+0x0a,(Bit8u)0x20); phys_writeb(CB_BASE+(call_irq1<<4)+0x0b,(Bit8u)0x58); // pop ax phys_writeb(CB_BASE+(call_irq1<<4)+0x0c,(Bit8u)0xcf); // iret }