dosbox-wii/src/ints/bios_keyboard.cpp

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/*
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* Copyright (C) 2002-2004 The DOSBox Team
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*
* 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
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* GNU General Public License for more details.
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*
* 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 */
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{ 0x4700, 0x4737, 0x7700, 0x0007 }, /* 7 Home */
{ 0x4800, 0x4838, none, 0x0008 }, /* 8 UP */
{ 0x4900, 0x4939, 0x8400, 0x0009 }, /* 9 PgUp */
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{ 0x4a2d, 0x4a2d, none, none }, /* - */
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{ 0x4b00, 0x4b34, 0x7300, 0x0004 }, /* 4 Left */
{ 0x4c00, 0x4c35, none, 0x0005 }, /* 5 */
{ 0x4d00, 0x4d36, 0x7400, 0x0006 }, /* 6 Right */
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{ 0x4e2b, 0x4e2b, none, none }, /* + */
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{ 0x4f00, 0x4f31, 0x7500, 0x0001 }, /* 1 End */
{ 0x5000, 0x5032, none, 0x0002 }, /* 2 Down */
{ 0x5100, 0x5133, 0x7600, 0x0003 }, /* 3 PgDn */
{ 0x5200, 0x5230, none, 0x0000 }, /* 0 Ins */
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{ 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;
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if (ttail>=end) {
ttail=start;
}
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/* Check for buffer Full */
//TODO Maybe beeeeeeep or something although that should happend when internal buffer is full
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if (ttail==head) return;
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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);
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end =mem_readw(BIOS_KEYBOARD_BUFFER_END);
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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
*/
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static Bitu IRQ1_Handler(void) {
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/* handling of the locks key is difficult as sdl only gives states for
* numlock capslock.
*/
/* in reg_al is the scancode */
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/* Read the code */
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Bitu scancode; //,ascii,mod;
#if 1
scancode=reg_al; //IO_Read(0x60); moved out of handler
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#else
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/* Old code capable of unicode keys. Dropped Readkey disabled in keyboard.cpp */
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KEYBOARD_ReadKey(scancode,ascii,mod);
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LOG_MSG("Got code %X ascii %C mod %X",scancode,ascii,mod);
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#endif
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Bit16u old_ax=reg_ax;
reg_flags|=1;
reg_ah=0x4f;reg_al=scancode;
CALLBACK_RunRealInt(0x15);
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reg_ax=old_ax;Bit8u flags1,flags2,flags3,leds;
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if (!(reg_flags&1)) goto irq1_return;
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flags1=mem_readb(BIOS_KEYBOARD_FLAGS1);
flags2=mem_readb(BIOS_KEYBOARD_FLAGS2);
flags3=mem_readb(BIOS_KEYBOARD_FLAGS3);
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leds =mem_readb(BIOS_KEYBOARD_LEDS);
flags2&=~(0x40+0x20);//remove numlock/capslock pressed (hack for sdl only reporting states)
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switch (scancode) {
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/* First the hard ones */
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case 0xfa: /* ack. Do nothing for now */
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break;
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case 0xe1: /* Extended key special. Only pause uses this */
LOG(LOG_KEYBOARD,LOG_ERROR)("someone is putting the pause key in the keyboard buffer");
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break;
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case 0xe0: /* Extended key */
flags3 |=0x02;
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break;
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case 0x1d: /* Ctrl Pressed */
flags1 |=0x04;
if (flags3 &0x02) flags3 |=0x04;
else flags2 |=0x01;
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break;
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case 0x9d: /* Ctrl Released */
if (flags3 &0x02) flags3 &=~0x04;
else flags2 &=~0x01;
if( !( (flags3 &0x04) || (flags2 &0x01) ) ) flags1 &=~0x04;
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break;
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case 0x2a: /* Left Shift Pressed */
flags1 |=0x02;
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break;
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case 0xaa: /* Left Shift Released */
flags1 &=~0x02;
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break;
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case 0x36: /* Right Shift Pressed */
flags1 |=0x01;
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break;
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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);
}
}
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break;
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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 */
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Bit16u asciiscan;
/* Now Handle the releasing of keys and see if they match up for a code */
/* Handle the actual scancode */
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if (scancode & 0x80) goto irq1_end;
if (scancode > MAX_SCAN_CODE) goto irq1_end;
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if (flags1 & 0x08) { /* Alt is being pressed */
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asciiscan=scan_to_scanascii[scancode].alt;
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#if 0 /* old unicode support disabled*/
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} else if (ascii) {
asciiscan=(scancode << 8) | ascii;
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#endif
} else if (flags1 & 0x04) { /* Ctrl is being pressed */
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asciiscan=scan_to_scanascii[scancode].control;
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} else if (flags1 & 0x03) { /* Either shift is being pressed */
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asciiscan=scan_to_scanascii[scancode].shift;
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} else {
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asciiscan=scan_to_scanascii[scancode].normal;
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}
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/* 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;
}
}
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add_key(asciiscan);
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break;
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};
irq1_end:
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if(scancode !=0xe0) flags3 &=~0x02; //Reset 0xE0 Flag
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mem_writeb(BIOS_KEYBOARD_FLAGS1,flags1);
mem_writeb(BIOS_KEYBOARD_FLAGS2,flags2);
mem_writeb(BIOS_KEYBOARD_FLAGS3,flags3);
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mem_writeb(BIOS_KEYBOARD_LEDS,leds);
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irq1_return:
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/* IO_Write(0x20,0x20); moved out of handler to be virtualizable */
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#if 0
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/* Signal the keyboard for next code */
/* In dosbox port 60 reads do this as well */
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Bit8u old61=IO_Read(0x61);
IO_Write(0x61,old61 | 128);
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IO_Write(0x64,0xae);
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#endif
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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();
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if (temp==0) { CALLBACK_Idle();};
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} while (temp==0);
reg_ax=temp;
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if(reg_al==0xe0) reg_al=0; //extended key
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break;
}
case 0x01: /* CHECK FOR KEYSTROKE */
case 0x11:
temp=check_key();
if (temp==0) {
CALLBACK_SZF(true);
} else {
CALLBACK_SZF(false);
reg_ax=temp;
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if(reg_al==0xe0) reg_al=0; //extended key
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}
break;
case 0x02: /* GET SHIFT FlAGS */
reg_al=mem_readb(BIOS_KEYBOARD_FLAGS1);
break;
case 0x03: /* SET TYPEMATIC RATE AND DELAY */
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LOG(LOG_BIOS,LOG_ERROR)("INT16:Unhandled Typematic Rate Call %2X BX=%X",reg_al,reg_bx);
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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 */
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LOG(LOG_BIOS,LOG_NORMAL)("INT16:55:Word TSR compatible call");
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break;
default:
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LOG(LOG_BIOS,LOG_ERROR)("INT16:Unhandled call %02X",reg_ah);
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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 */
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mem_writeb(BIOS_KEYBOARD_TOKEN,0);
mem_writeb(BIOS_KEYBOARD_LEDS,16);
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}
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();
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CALLBACK_Setup(call_int16,&INT16_Handler,CB_IRET_STI,"keyboard");
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RealSetVec(0x16,CALLBACK_RealPointer(call_int16));
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CALLBACK_Setup(call_irq1,&IRQ1_Handler,CB_IRET,"keyboard irq");
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RealSetVec(0x9,CALLBACK_RealPointer(call_irq1));
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/* 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
2009-05-02 23:03:37 +02:00
}