/* * Copyright (C) 2002 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 Library 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, none }, /* 7 Home */ { 0x4800, 0x4838, none, none }, /* 8 UP */ { 0x4900, 0x4939, 0x8400, none }, /* 9 PgUp */ { 0x4a2d, 0x4a2d, none, none }, /* - */ { 0x4b00, 0x4b34, 0x7300, none }, /* 4 Left */ { 0x4c00, 0x4c35, none, none }, /* 5 */ { 0x4d00, 0x4d36, 0x7400, none }, /* 6 Right */ { 0x4e2b, 0x4e2b, none, none }, /* + */ { 0x4f00, 0x4f31, 0x7500, none }, /* 1 End */ { 0x5000, 0x5032, none, none }, /* 2 Down */ { 0x5100, 0x5133, 0x7600, none }, /* 3 PgDn */ { 0x5200, 0x5230, none, none }, /* 0 Ins */ { 0x5300, 0x532e, none, none } /* Del */ }; /* Old Stuff not needed after i ripped Bochs :) static Bit8u KeyNoShift[128]={ 27,'1','2','3', '4','5','6','7', '8','9','0','-', '=',8,9,'q', 'w','e','r','t', 'y','u','i','o', 'p','[',']',13, 255,'a','s','d', 'f','g','h','j', 'k','l',';','\'', '`',255,'\\','z', 'x','c','v','b', 'n','m',',','.', '/',255,'*',255, ' ',255,0,0, 0,0,0,0, 0,0,0,0, 255,255,0,0, 0,'-',0,255, 0,'+',0,0, 0,0,0,0, 0 }; static Bit8u KeyShift[128]={ 27,'!','@','#', '$','%','^','&', '*','(',')','_', '+',8,9,'Q', 'W','E','R','T', 'Y','U','I','O', 'P','{','}',13, 255,'A','S','D', 'F','G','H','J', 'K','L',':','"', '~',255,'|','Z', 'X','C','V','B', 'N','M','<','>', '?',255,'*',255, ' ',255,0,0, 0,0,0,0, 0,0,0,0, 255,255,0,0, 0,'-',0,255, 0,'+',0,0, 0,0,0,0, 0 }; */ 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) { //TODO CAPSLOCK NUMLOCK SCROLLLOCK maybe :) Bit8u code=IO_Read(0x60); //TODO maybe implement the int 0x15 ah=4f scancode lookup hook /* Changed it so the flag handling takes place in here too */ Bit8u flags1=mem_readb(BIOS_KEYBOARD_FLAGS1); Bit8u flags2=mem_readb(BIOS_KEYBOARD_FLAGS2); Bit8u flags3=mem_readb(BIOS_KEYBOARD_FLAGS3); switch (code) { /* First the hard ones */ case 0xe0: //TODO Think of something else maybe flags3|=2; break; case 29: /* Ctrl Pressed */ flags1|=4; if (flags3 & 2) flags3|=4; else flags2|=1; break; case 157: /* Ctrl Released */ flags1&=~4; if (flags3 & 2) flags3&=~4; else flags2&=~1; break; case 42: /* Left Shift Pressed */ flags1|=2; break; case 170: /* Left Shift Released */ flags1&=~2; break; case 54: /* Right Shift Pressed */ flags1|=1; break; case 182: /* Right Shift Released */ flags1&=~1; break; case 56: /* Alt Pressed */ flags1|=8; if (flags3 & 2) flags3|=8; else flags2|=2; break; case 184: /* Alt Released */ flags1&=~8; if (flags3 & 2) flags3&=~8; else flags2&=~2; break; #if 0 case 58:p_capslock=true;break; /* Caps Lock */ case 186:p_capslock=false;break; case 69:p_numlock=true;break; /* Num Lock */ case 197:p_numlock=false;break; case 70:p_scrolllock=true;break; /* Scroll Lock */ case 198:p_scrolllock=false;break; case 82:p_insert=true;break; /* Insert */ case 210:p_insert=false;a_insert=!a_insert;break; #endif default: /* Normal Key */ Bit16u asciiscan; /* Now Handle the releasing of keys and see if they match up for a code */ flags3&=~2; //Reset 0xE0 Flag /* Handle the actual scancode */ if (code & 0x80) goto irq1_end; if (code > MAX_SCAN_CODE) goto irq1_end; if (flags1 & 8) { /* Alt is being pressed */ asciiscan=scan_to_scanascii[code].alt; } else if (flags1 & 4) { /* Ctrl is being pressed */ asciiscan=scan_to_scanascii[code].control; } else if (flags1 & 3) { /* Either shift is being pressed */ //TODO Maybe check for Capslock sometime in some bored way asciiscan=scan_to_scanascii[code].shift; } else { asciiscan=scan_to_scanascii[code].normal; } add_key(asciiscan); }; irq1_end: mem_writeb(BIOS_KEYBOARD_FLAGS1,flags1); mem_writeb(BIOS_KEYBOARD_FLAGS2,flags2); mem_writeb(BIOS_KEYBOARD_FLAGS3,flags3); IO_Write(0x20,0x20); /* Signal the keyboard for next code */ Bit8u old61=IO_Read(0x61); IO_Write(0x61,old61 | 128); IO_Write(0x61,old61 & 127); 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) { flags.intf=true;CALLBACK_Idle();}; } while (temp==0); reg_ax=temp; break; } case 0x01: /* CHECK FOR KEYSTROKE */ case 0x11: temp=check_key(); if (temp==0) { CALLBACK_SZF(true); } else { CALLBACK_SZF(false); reg_ax=temp; } break; case 0x02: /* GET SHIFT FlAGS */ reg_al=mem_readb(BIOS_KEYBOARD_FLAGS1); break; case 0x03: /* SET TYPEMATIC RATE AND DELAY */ //Have to implement this trhough SDL LOG_DEBUG("INT16:Unhandled Typematic Rate Call %2X",reg_al); 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_DEBUG("INT16:55:Word TSR compatible call"); break; default: E_Exit("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 */ } 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); RealSetVec(0x16,CALLBACK_RealPointer(call_int16)); CALLBACK_Setup(call_irq1,&IRQ1_Handler,CB_IRET); RealSetVec(0x9,CALLBACK_RealPointer(call_irq1)); }