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trs_keyboard.c
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trs_keyboard.c
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/*
* Copyright (C) 1992 Clarendon Hill Software.
*
* Permission is granted to any individual or institution to use, copy,
* or redistribute this software, provided this copyright notice is retained.
*
* This software is provided "as is" without any expressed or implied
* warranty. If this software brings on any sort of damage -- physical,
* monetary, emotional, or brain -- too bad. You've got no one to blame
* but yourself.
*
* The software may be modified for your own purposes, but modified versions
* must retain this notice.
*/
/*
* Portions copyright (c) 1996-2020, Timothy P. Mann
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/*#define KBDEBUG 1*/
/*#define QDEBUG 1*/
/*#define JOYDEBUG 1*/
#define KP_JOYSTICK 1 /* emulate joystick with keypad */
/*#define KPNUM_JOYSTICK 1*/ /* emulate joystick with keypad + NumLock */
/*#define SHIFT_F1_IS_F13 1*/ /* use if X reports Shift+F1..F8 as F13..F20 */
/*#define SHIFT_F1_IS_F11 1*/ /* use if X reports Shift+F1..F10 as F11..F20 */
#include "z80.h"
#include "trs.h"
#include <unistd.h>
/*
* Key event queue
*/
#define KEY_QUEUE_SIZE (32)
static int key_queue[KEY_QUEUE_SIZE];
static int key_queue_head;
static int key_queue_entries;
static int skip_next_kbwait;
/*
* TRS-80 key matrix
*/
#define TK(a, b) (((a)<<4)+(b))
#define TK_ADDR(tk) (((tk) >> 4)&0xf)
#define TK_DATA(tk) ((tk)&0xf)
#define TK_DOWN(tk) (((tk)&0x10000) == 0)
#define TK_AtSign TK(0, 0) /* @ */
#define TK_A TK(0, 1)
#define TK_B TK(0, 2)
#define TK_C TK(0, 3)
#define TK_D TK(0, 4)
#define TK_E TK(0, 5)
#define TK_F TK(0, 6)
#define TK_G TK(0, 7)
#define TK_H TK(1, 0)
#define TK_I TK(1, 1)
#define TK_J TK(1, 2)
#define TK_K TK(1, 3)
#define TK_L TK(1, 4)
#define TK_M TK(1, 5)
#define TK_N TK(1, 6)
#define TK_O TK(1, 7)
#define TK_P TK(2, 0)
#define TK_Q TK(2, 1)
#define TK_R TK(2, 2)
#define TK_S TK(2, 3)
#define TK_T TK(2, 4)
#define TK_U TK(2, 5)
#define TK_V TK(2, 6)
#define TK_W TK(2, 7)
#define TK_X TK(3, 0)
#define TK_Y TK(3, 1)
#define TK_Z TK(3, 2)
#define TK_LeftBracket TK(3, 3) /* [ { */ /* not really on keyboard */
#define TK_Backslash TK(3, 4) /* \ | */ /* not really on keyboard */
#define TK_RightBracket TK(3, 5) /* ] } */ /* not really on keyboard */
#define TK_Caret TK(3, 6) /* ^ ~ */ /* not really on keyboard */
#define TK_Underscore TK(3, 7) /* _ */ /* not really on keyboard */
#define TK_0 TK(4, 0) /* 0 */
#define TK_1 TK(4, 1) /* 1 ! */
#define TK_2 TK(4, 2) /* 2 " */
#define TK_3 TK(4, 3) /* 3 # */
#define TK_4 TK(4, 4) /* 4 $ */
#define TK_5 TK(4, 5) /* 5 % */
#define TK_6 TK(4, 6) /* 6 & */
#define TK_7 TK(4, 7) /* 7 ' */
#define TK_8 TK(5, 0) /* 8 ( */
#define TK_9 TK(5, 1) /* 9 ) */
#define TK_Colon TK(5, 2) /* : * */
#define TK_Semicolon TK(5, 3) /* ; + */
#define TK_Comma TK(5, 4) /* , < */
#define TK_Minus TK(5, 5) /* - = */
#define TK_Period TK(5, 6) /* . > */
#define TK_Slash TK(5, 7) /* / ? */
#define TK_Enter TK(6, 0)
#define TK_Clear TK(6, 1)
#define TK_Break TK(6, 2)
#define TK_Up TK(6, 3)
#define TK_Down TK(6, 4)
#define TK_Left TK(6, 5)
#define TK_Right TK(6, 6)
#define TK_Space TK(6, 7)
#define TK_LeftShift TK(7, 0)
#define TK_RightShift TK(7, 1) /* M3/4 only; both shifts are 7, 0 on M1 */
#define TK_Ctrl TK(7, 2) /* M4 only */
#define TK_CapsLock TK(7, 3) /* M4 only */
#define TK_F1 TK(7, 4) /* M4 only */
#define TK_F2 TK(7, 5) /* M4 only */
#define TK_F3 TK(7, 6) /* M4 only */
#define TK_Unused TK(7, 7)
/* Fake keycodes with special meanings */
#define TK_NULL TK(8, 0)
#define TK_Neutral TK(8, 1) /* don't force shift */
#define TK_ForceShift TK(8, 2)
#define TK_ForceNoShift TK(8, 3)
#define TK_ForceShiftPersistent TK(8, 4)
#define TK_AllKeysUp TK(8, 5)
#define TK_Joystick TK(10, 0)
#define TK_North TK(10, 1)
#define TK_Northeast TK(10, 9)
#define TK_East TK(10, 8)
#define TK_Southeast TK(10, 10)
#define TK_South TK(10, 2)
#define TK_Southwest TK(10, 5)
#define TK_West TK(10, 4)
#define TK_Northwest TK(10, 6)
#define TK_Fire TK(10, 16)
typedef struct
{
int bit_action;
int shift_action;
} KeyTable;
/* Keysyms in the extended ASCII range 0x0000 - 0x00ff */
KeyTable ascii_key_table[] = {
/* 0x0 */ { TK_NULL, TK_Neutral }, /* undefined keysyms... */
/* 0x1 */ { TK_NULL, TK_Neutral },
/* 0x2 */ { TK_NULL, TK_Neutral },
/* 0x3 */ { TK_NULL, TK_Neutral },
/* 0x4 */ { TK_NULL, TK_Neutral },
/* 0x5 */ { TK_NULL, TK_Neutral },
/* 0x6 */ { TK_NULL, TK_Neutral },
/* 0x7 */ { TK_NULL, TK_Neutral },
/* 0x8 */ { TK_NULL, TK_Neutral },
/* 0x9 */ { TK_NULL, TK_Neutral },
/* 0xa */ { TK_NULL, TK_Neutral },
/* 0xb */ { TK_NULL, TK_Neutral },
/* 0xc */ { TK_NULL, TK_Neutral },
/* 0xd */ { TK_NULL, TK_Neutral },
/* 0xe */ { TK_NULL, TK_Neutral },
/* 0xf */ { TK_NULL, TK_Neutral },
/* 0x10 */ { TK_NULL, TK_Neutral },
/* 0x11 */ { TK_NULL, TK_Neutral },
/* 0x12 */ { TK_NULL, TK_Neutral },
/* 0x13 */ { TK_NULL, TK_Neutral },
/* 0x14 */ { TK_NULL, TK_Neutral },
/* 0x15 */ { TK_NULL, TK_Neutral },
/* 0x16 */ { TK_NULL, TK_Neutral },
/* 0x17 */ { TK_NULL, TK_Neutral },
/* 0x18 */ { TK_NULL, TK_Neutral },
/* 0x19 */ { TK_NULL, TK_Neutral },
/* 0x1a */ { TK_NULL, TK_Neutral },
/* 0x1b */ { TK_NULL, TK_Neutral },
/* 0x1c */ { TK_NULL, TK_Neutral },
/* 0x1d */ { TK_NULL, TK_Neutral },
/* 0x1e */ { TK_NULL, TK_Neutral },
/* 0x1f */ { TK_NULL, TK_Neutral }, /* ...end undefined keysyms */
/* 0x20 */ { TK_Space, TK_Neutral },
/* 0x21 */ { TK_1, TK_ForceShift },
/* 0x22 */ { TK_2, TK_ForceShift },
/* 0x23 */ { TK_3, TK_ForceShift },
/* 0x24 */ { TK_4, TK_ForceShift },
/* 0x25 */ { TK_5, TK_ForceShift },
/* 0x26 */ { TK_6, TK_ForceShift },
/* 0x27 */ { TK_7, TK_ForceShift },
/* 0x28 */ { TK_8, TK_ForceShift },
/* 0x29 */ { TK_9, TK_ForceShift },
/* 0x2a */ { TK_Colon, TK_ForceShift },
/* 0x2b */ { TK_Semicolon, TK_ForceShift },
/* 0x2c */ { TK_Comma, TK_ForceNoShift },
/* 0x2d */ { TK_Minus, TK_ForceNoShift },
/* 0x2e */ { TK_Period, TK_ForceNoShift },
/* 0x2f */ { TK_Slash, TK_ForceNoShift },
/* 0x30 */ { TK_0, TK_ForceNoShift },
/* 0x31 */ { TK_1, TK_ForceNoShift },
/* 0x32 */ { TK_2, TK_ForceNoShift },
/* 0x33 */ { TK_3, TK_ForceNoShift },
/* 0x34 */ { TK_4, TK_ForceNoShift },
/* 0x35 */ { TK_5, TK_ForceNoShift },
/* 0x36 */ { TK_6, TK_ForceNoShift },
/* 0x37 */ { TK_7, TK_ForceNoShift },
/* 0x38 */ { TK_8, TK_ForceNoShift },
/* 0x39 */ { TK_9, TK_ForceNoShift },
/* 0x3a */ { TK_Colon, TK_ForceNoShift },
/* 0x3b */ { TK_Semicolon, TK_ForceNoShift },
/* 0x3c */ { TK_Comma, TK_ForceShift },
/* 0x3d */ { TK_Minus, TK_ForceShift },
/* 0x3e */ { TK_Period, TK_ForceShift },
/* 0x3f */ { TK_Slash, TK_ForceShift },
/* 0x40 */ { TK_AtSign, TK_ForceNoShift },
/* 0x41 */ { TK_A, TK_ForceShift },
/* 0x42 */ { TK_B, TK_ForceShift },
/* 0x43 */ { TK_C, TK_ForceShift },
/* 0x44 */ { TK_D, TK_ForceShift },
/* 0x45 */ { TK_E, TK_ForceShift },
/* 0x46 */ { TK_F, TK_ForceShift },
/* 0x47 */ { TK_G, TK_ForceShift },
/* 0x48 */ { TK_H, TK_ForceShift },
/* 0x49 */ { TK_I, TK_ForceShift },
/* 0x4a */ { TK_J, TK_ForceShift },
/* 0x4b */ { TK_K, TK_ForceShift },
/* 0x4c */ { TK_L, TK_ForceShift },
/* 0x4d */ { TK_M, TK_ForceShift },
/* 0x4e */ { TK_N, TK_ForceShift },
/* 0x4f */ { TK_O, TK_ForceShift },
/* 0x50 */ { TK_P, TK_ForceShift },
/* 0x51 */ { TK_Q, TK_ForceShift },
/* 0x52 */ { TK_R, TK_ForceShift },
/* 0x53 */ { TK_S, TK_ForceShift },
/* 0x54 */ { TK_T, TK_ForceShift },
/* 0x55 */ { TK_U, TK_ForceShift },
/* 0x56 */ { TK_V, TK_ForceShift },
/* 0x57 */ { TK_W, TK_ForceShift },
/* 0x58 */ { TK_X, TK_ForceShift },
/* 0x59 */ { TK_Y, TK_ForceShift },
/* 0x5a */ { TK_Z, TK_ForceShift },
/* 0x5b */ { TK_LeftBracket, TK_ForceNoShift },
/* 0x5c */ { TK_Backslash, TK_ForceNoShift },
/* 0x5d */ { TK_RightBracket, TK_ForceNoShift },
/* 0x5e */ { TK_Caret, TK_ForceNoShift },
/* 0x5f */ { TK_Underscore, TK_ForceNoShift },
/* 0x60 */ { TK_AtSign, TK_ForceShift },
/* 0x61 */ { TK_A, TK_ForceNoShift },
/* 0x62 */ { TK_B, TK_ForceNoShift },
/* 0x63 */ { TK_C, TK_ForceNoShift },
/* 0x64 */ { TK_D, TK_ForceNoShift },
/* 0x65 */ { TK_E, TK_ForceNoShift },
/* 0x66 */ { TK_F, TK_ForceNoShift },
/* 0x67 */ { TK_G, TK_ForceNoShift },
/* 0x68 */ { TK_H, TK_ForceNoShift },
/* 0x69 */ { TK_I, TK_ForceNoShift },
/* 0x6a */ { TK_J, TK_ForceNoShift },
/* 0x6b */ { TK_K, TK_ForceNoShift },
/* 0x6c */ { TK_L, TK_ForceNoShift },
/* 0x6d */ { TK_M, TK_ForceNoShift },
/* 0x6e */ { TK_N, TK_ForceNoShift },
/* 0x6f */ { TK_O, TK_ForceNoShift },
/* 0x70 */ { TK_P, TK_ForceNoShift },
/* 0x71 */ { TK_Q, TK_ForceNoShift },
/* 0x72 */ { TK_R, TK_ForceNoShift },
/* 0x73 */ { TK_S, TK_ForceNoShift },
/* 0x74 */ { TK_T, TK_ForceNoShift },
/* 0x75 */ { TK_U, TK_ForceNoShift },
/* 0x76 */ { TK_V, TK_ForceNoShift },
/* 0x77 */ { TK_W, TK_ForceNoShift },
/* 0x78 */ { TK_X, TK_ForceNoShift },
/* 0x79 */ { TK_Y, TK_ForceNoShift },
/* 0x7a */ { TK_Z, TK_ForceNoShift },
/* 0x7b */ { TK_LeftBracket, TK_ForceShift },
/* 0x7c */ { TK_Backslash, TK_ForceShift },
/* 0x7d */ { TK_RightBracket, TK_ForceShift },
/* 0x7e */ { TK_Caret, TK_ForceShift },
/* 0x7f */ { TK_NULL, TK_Neutral },
/* 0x80 */ { TK_NULL, TK_Neutral },
/* 0x81 */ { TK_NULL, TK_Neutral },
/* 0x82 */ { TK_NULL, TK_Neutral },
/* 0x83 */ { TK_NULL, TK_Neutral },
/* 0x84 */ { TK_NULL, TK_Neutral },
/* 0x85 */ { TK_NULL, TK_Neutral },
/* 0x86 */ { TK_NULL, TK_Neutral },
/* 0x87 */ { TK_NULL, TK_Neutral },
/* 0x88 */ { TK_NULL, TK_Neutral },
/* 0x89 */ { TK_NULL, TK_Neutral },
/* 0x8a */ { TK_NULL, TK_Neutral },
/* 0x8b */ { TK_NULL, TK_Neutral },
/* 0x8c */ { TK_NULL, TK_Neutral },
/* 0x8d */ { TK_NULL, TK_Neutral },
/* 0x8e */ { TK_NULL, TK_Neutral },
/* 0x8f */ { TK_NULL, TK_Neutral },
/* 0x90 */ { TK_NULL, TK_Neutral },
/* 0x91 */ { TK_NULL, TK_Neutral },
/* 0x92 */ { TK_NULL, TK_Neutral },
/* 0x93 */ { TK_NULL, TK_Neutral },
/* 0x94 */ { TK_NULL, TK_Neutral },
/* 0x95 */ { TK_NULL, TK_Neutral },
/* 0x96 */ { TK_NULL, TK_Neutral },
/* 0x97 */ { TK_NULL, TK_Neutral },
/* 0x98 */ { TK_NULL, TK_Neutral },
/* 0x99 */ { TK_NULL, TK_Neutral },
/* 0x9a */ { TK_NULL, TK_Neutral },
/* 0x9b */ { TK_NULL, TK_Neutral },
/* 0x9c */ { TK_NULL, TK_Neutral },
/* 0x9d */ { TK_NULL, TK_Neutral },
/* 0x9e */ { TK_NULL, TK_Neutral },
/* 0x9f */ { TK_NULL, TK_Neutral },
/* 0xa0 */ { TK_NULL, TK_Neutral },
/* 0xa1 */ { TK_NULL, TK_Neutral },
/* 0xa2 */ { TK_NULL, TK_Neutral },
/* 0xa3 */ { TK_NULL, TK_Neutral },
/* 0xa4 */ { TK_NULL, TK_Neutral },
/* 0xa5 */ { TK_NULL, TK_Neutral },
/* 0xa6 */ { TK_NULL, TK_Neutral },
/* 0xa7 */ { TK_NULL, TK_Neutral },
/* 0xa8 */ { TK_NULL, TK_Neutral },
/* 0xa9 */ { TK_NULL, TK_Neutral },
/* 0xaa */ { TK_NULL, TK_Neutral },
/* 0xab */ { TK_NULL, TK_Neutral },
/* 0xac */ { TK_NULL, TK_Neutral },
/* 0xad */ { TK_NULL, TK_Neutral },
/* 0xae */ { TK_NULL, TK_Neutral },
/* 0xaf */ { TK_NULL, TK_Neutral },
/* 0xb0 */ { TK_NULL, TK_Neutral },
/* 0xb1 */ { TK_NULL, TK_Neutral },
/* 0xb2 */ { TK_NULL, TK_Neutral },
/* 0xb3 */ { TK_NULL, TK_Neutral },
/* 0xb4 */ { TK_NULL, TK_Neutral },
/* 0xb5 */ { TK_NULL, TK_Neutral },
/* 0xb6 */ { TK_NULL, TK_Neutral },
/* 0xb7 */ { TK_NULL, TK_Neutral },
/* 0xb8 */ { TK_NULL, TK_Neutral },
/* 0xb9 */ { TK_NULL, TK_Neutral },
/* 0xba */ { TK_NULL, TK_Neutral },
/* 0xbb */ { TK_NULL, TK_Neutral },
/* 0xbc */ { TK_NULL, TK_Neutral },
/* 0xbd */ { TK_NULL, TK_Neutral },
/* 0xbe */ { TK_NULL, TK_Neutral },
/* 0xbf */ { TK_NULL, TK_Neutral },
/* 0xc0 */ { TK_NULL, TK_Neutral },
/* 0xc1 */ { TK_NULL, TK_Neutral },
/* 0xc2 */ { TK_NULL, TK_Neutral },
/* 0xc3 */ { TK_NULL, TK_Neutral },
/* 0xc4 */ { TK_LeftBracket, TK_ForceShift }, /* Ä */
/* 0xc5 */ { TK_NULL, TK_Neutral },
/* 0xc6 */ { TK_NULL, TK_Neutral },
/* 0xc7 */ { TK_NULL, TK_Neutral },
/* 0xc8 */ { TK_NULL, TK_Neutral },
/* 0xc9 */ { TK_NULL, TK_Neutral },
/* 0xca */ { TK_NULL, TK_Neutral },
/* 0xcb */ { TK_NULL, TK_Neutral },
/* 0xcc */ { TK_NULL, TK_Neutral },
/* 0xcd */ { TK_NULL, TK_Neutral },
/* 0xce */ { TK_NULL, TK_Neutral },
/* 0xcf */ { TK_NULL, TK_Neutral },
/* 0xd0 */ { TK_NULL, TK_Neutral },
/* 0xd1 */ { TK_NULL, TK_Neutral },
/* 0xd2 */ { TK_NULL, TK_Neutral },
/* 0xd3 */ { TK_NULL, TK_Neutral },
/* 0xd4 */ { TK_NULL, TK_Neutral },
/* 0xd5 */ { TK_NULL, TK_Neutral },
/* 0xd6 */ { TK_Backslash, TK_ForceShift }, /* Ö */
/* 0xd7 */ { TK_NULL, TK_Neutral },
/* 0xd8 */ { TK_NULL, TK_Neutral },
/* 0xd9 */ { TK_NULL, TK_Neutral },
/* 0xda */ { TK_NULL, TK_Neutral },
/* 0xdb */ { TK_NULL, TK_Neutral },
/* 0xdc */ { TK_RightBracket, TK_ForceShift }, /* Ü */
/* 0xdd */ { TK_NULL, TK_Neutral },
/* 0xde */ { TK_NULL, TK_Neutral },
/* 0xdf */ { TK_Caret, TK_ForceNoShift }, /* ß */
/* 0xe0 */ { TK_NULL, TK_Neutral },
/* 0xe1 */ { TK_NULL, TK_Neutral },
/* 0xe2 */ { TK_NULL, TK_Neutral },
/* 0xe3 */ { TK_NULL, TK_Neutral },
/* 0xe4 */ { TK_LeftBracket, TK_ForceNoShift }, /* ä */
/* 0xe5 */ { TK_NULL, TK_Neutral },
/* 0xe6 */ { TK_NULL, TK_Neutral },
/* 0xe7 */ { TK_NULL, TK_Neutral },
/* 0xe8 */ { TK_NULL, TK_Neutral },
/* 0xe9 */ { TK_NULL, TK_Neutral },
/* 0xea */ { TK_NULL, TK_Neutral },
/* 0xeb */ { TK_NULL, TK_Neutral },
/* 0xec */ { TK_NULL, TK_Neutral },
/* 0xed */ { TK_NULL, TK_Neutral },
/* 0xee */ { TK_NULL, TK_Neutral },
/* 0xef */ { TK_NULL, TK_Neutral },
/* 0xf0 */ { TK_NULL, TK_Neutral },
/* 0xf1 */ { TK_NULL, TK_Neutral },
/* 0xf2 */ { TK_NULL, TK_Neutral },
/* 0xf3 */ { TK_NULL, TK_Neutral },
/* 0xf4 */ { TK_NULL, TK_Neutral },
/* 0xf5 */ { TK_NULL, TK_Neutral },
/* 0xf6 */ { TK_Backslash, TK_ForceNoShift }, /* ö */
/* 0xf7 */ { TK_NULL, TK_Neutral },
/* 0xf8 */ { TK_NULL, TK_Neutral },
/* 0xf9 */ { TK_NULL, TK_Neutral },
/* 0xfa */ { TK_NULL, TK_Neutral },
/* 0xfb */ { TK_NULL, TK_Neutral },
/* 0xfc */ { TK_RightBracket, TK_ForceNoShift }, /* ü */
/* 0xfd */ { TK_NULL, TK_Neutral },
/* 0xfe */ { TK_NULL, TK_Neutral },
/* 0xff */ { TK_NULL, TK_Neutral }
};
/* Keysyms in the function key range 0xff00 - 0xffff */
KeyTable function_key_table[] = {
/* 0xff00 */ { TK_NULL, TK_Neutral },
/* 0xff01 */ { TK_NULL, TK_Neutral },
/* 0xff02 */ { TK_NULL, TK_Neutral },
/* 0xff03 */ { TK_NULL, TK_Neutral },
/* 0xff04 */ { TK_NULL, TK_Neutral },
/* 0xff05 */ { TK_NULL, TK_Neutral },
/* 0xff06 */ { TK_NULL, TK_Neutral },
/* 0xff07 */ { TK_NULL, TK_Neutral },
/* 0xff08 XK_BackSpace */ { TK_Left, TK_Neutral },
/* 0xff09 XK_Tab */ { TK_Right, TK_Neutral },
/* 0xff0a XK_Linefeed */ { TK_Down, TK_Neutral },
/* 0xff0b XK_Clear */ { TK_Clear, TK_Neutral },
/* 0xff0c */ { TK_NULL, TK_Neutral },
/* 0xff0d XK_Return */ { TK_Enter, TK_Neutral },
/* 0xff0e */ { TK_NULL, TK_Neutral },
/* 0xff0f */ { TK_NULL, TK_Neutral },
/* 0xff10 */ { TK_NULL, TK_Neutral },
/* 0xff11 */ { TK_NULL, TK_Neutral },
/* 0xff12 */ { TK_NULL, TK_Neutral },
/* 0xff13 XK_Pause */ { TK_NULL, TK_Neutral },
/* 0xff14 XK_ScrollLock */ { TK_AtSign, TK_Neutral },
/* 0xff15 XK_Sys_Req */ { TK_NULL, TK_Neutral },
/* 0xff16 */ { TK_NULL, TK_Neutral },
/* 0xff17 */ { TK_NULL, TK_Neutral },
/* 0xff18 */ { TK_NULL, TK_Neutral },
/* 0xff19 */ { TK_NULL, TK_Neutral },
/* 0xff1a */ { TK_NULL, TK_Neutral },
/* 0xff1b XK_Escape */ { TK_Break, TK_Neutral },
/* 0xff1c */ { TK_NULL, TK_Neutral },
/* 0xff1d */ { TK_NULL, TK_Neutral },
/* 0xff1e */ { TK_NULL, TK_Neutral },
/* 0xff1f */ { TK_NULL, TK_Neutral },
/* 0xff20 XK_Multi_key */ { TK_AtSign, TK_Neutral },
/* 0xff21 */ { TK_NULL, TK_Neutral },
/* 0xff22 */ { TK_NULL, TK_Neutral },
/* 0xff23 */ { TK_NULL, TK_Neutral },
/* 0xff24 */ { TK_NULL, TK_Neutral },
/* 0xff25 */ { TK_NULL, TK_Neutral },
/* 0xff26 */ { TK_NULL, TK_Neutral },
/* 0xff27 */ { TK_NULL, TK_Neutral },
/* 0xff28 */ { TK_NULL, TK_Neutral },
/* 0xff29 */ { TK_NULL, TK_Neutral },
/* 0xff2a */ { TK_NULL, TK_Neutral },
/* 0xff2b */ { TK_NULL, TK_Neutral },
/* 0xff2c */ { TK_NULL, TK_Neutral },
/* 0xff2d */ { TK_NULL, TK_Neutral },
/* 0xff2e */ { TK_NULL, TK_Neutral },
/* 0xff2f */ { TK_NULL, TK_Neutral },
/* 0xff30 */ { TK_NULL, TK_Neutral },
/* 0xff31 */ { TK_NULL, TK_Neutral },
/* 0xff32 */ { TK_NULL, TK_Neutral },
/* 0xff33 */ { TK_NULL, TK_Neutral },
/* 0xff34 */ { TK_NULL, TK_Neutral },
/* 0xff35 */ { TK_NULL, TK_Neutral },
/* 0xff36 */ { TK_NULL, TK_Neutral },
/* 0xff37 */ { TK_NULL, TK_Neutral },
/* 0xff38 */ { TK_NULL, TK_Neutral },
/* 0xff39 */ { TK_NULL, TK_Neutral },
/* 0xff3a */ { TK_NULL, TK_Neutral },
/* 0xff3b */ { TK_NULL, TK_Neutral },
/* 0xff3c */ { TK_NULL, TK_Neutral },
/* 0xff3d */ { TK_NULL, TK_Neutral },
/* 0xff3e */ { TK_NULL, TK_Neutral },
/* 0xff3f */ { TK_NULL, TK_Neutral },
/* 0xff40 */ { TK_NULL, TK_Neutral },
/* 0xff41 */ { TK_NULL, TK_Neutral },
/* 0xff42 */ { TK_NULL, TK_Neutral },
/* 0xff43 */ { TK_NULL, TK_Neutral },
/* 0xff44 */ { TK_NULL, TK_Neutral },
/* 0xff45 */ { TK_NULL, TK_Neutral },
/* 0xff46 */ { TK_NULL, TK_Neutral },
/* 0xff47 */ { TK_NULL, TK_Neutral },
/* 0xff48 */ { TK_NULL, TK_Neutral },
/* 0xff49 */ { TK_NULL, TK_Neutral },
/* 0xff4a */ { TK_NULL, TK_Neutral },
/* 0xff4b */ { TK_NULL, TK_Neutral },
/* 0xff4c */ { TK_NULL, TK_Neutral },
/* 0xff4d */ { TK_NULL, TK_Neutral },
/* 0xff4e */ { TK_NULL, TK_Neutral },
/* 0xff4f */ { TK_NULL, TK_Neutral },
/* 0xff50 XK_Home */ { TK_Clear, TK_Neutral },
/* 0xff51 XK_Left */ { TK_Left, TK_Neutral },
/* 0xff52 XK_Up */ { TK_Up, TK_Neutral },
/* 0xff53 XK_Right */ { TK_Right, TK_Neutral },
/* 0xff54 XK_Down */ { TK_Down, TK_Neutral },
/* 0xff55 XK_Prior, XK_Page_Up */ { TK_LeftShift, TK_Neutral },
/* 0xff56 XK_Next, XK_Page_Down */ { TK_RightShift, TK_Neutral },
/* 0xff57 XK_End */ { TK_Unused, TK_Neutral },
/* 0xff58 XK_Begin */ { TK_NULL, TK_Neutral },
/* 0xff59 */ { TK_NULL, TK_Neutral },
/* 0xff5a */ { TK_NULL, TK_Neutral },
/* 0xff5b */ { TK_NULL, TK_Neutral },
/* 0xff5c */ { TK_NULL, TK_Neutral },
/* 0xff5d */ { TK_NULL, TK_Neutral },
/* 0xff5e */ { TK_NULL, TK_Neutral },
/* 0xff5f */ { TK_NULL, TK_Neutral },
/* 0xff60 XK_Select */ { TK_NULL, TK_Neutral },
/* 0xff61 XK_Print */ { TK_NULL, TK_Neutral },
/* 0xff62 XK_Execute */ { TK_NULL, TK_Neutral },
/* 0xff63 XK_Insert */ { TK_Underscore, TK_Neutral },
/* 0xff64 */ { TK_NULL, TK_Neutral },
/* 0xff65 XK_Undo */ { TK_NULL, TK_Neutral },
/* 0xff66 XK_Redo */ { TK_NULL, TK_Neutral },
/* 0xff67 XK_Menu */ { TK_NULL, TK_Neutral },
/* 0xff68 XK_Find */ { TK_NULL, TK_Neutral },
/* 0xff69 XK_Cancel */ { TK_NULL, TK_Neutral },
/* 0xff6a XK_Help */ { TK_NULL, TK_Neutral },
/* 0xff6b XK_Break */ { TK_Break, TK_Neutral },
/* 0xff6c */ { TK_NULL, TK_Neutral },
/* 0xff6d */ { TK_NULL, TK_Neutral },
/* 0xff6e */ { TK_NULL, TK_Neutral },
/* 0xff6f */ { TK_NULL, TK_Neutral },
/* 0xff70 */ { TK_NULL, TK_Neutral },
/* 0xff71 */ { TK_NULL, TK_Neutral },
/* 0xff72 */ { TK_NULL, TK_Neutral },
/* 0xff73 */ { TK_NULL, TK_Neutral },
/* 0xff74 */ { TK_NULL, TK_Neutral },
/* 0xff75 */ { TK_NULL, TK_Neutral },
/* 0xff76 */ { TK_NULL, TK_Neutral },
/* 0xff77 */ { TK_NULL, TK_Neutral },
/* 0xff78 */ { TK_NULL, TK_Neutral },
/* 0xff79 */ { TK_NULL, TK_Neutral },
/* 0xff7a */ { TK_NULL, TK_Neutral },
/* 0xff7b */ { TK_NULL, TK_Neutral },
/* 0xff7c */ { TK_NULL, TK_Neutral },
/* 0xff7d */ { TK_NULL, TK_Neutral },
/* 0xff7e XK_Mode_switch */ { TK_NULL, TK_Neutral },
/* 0xff7f XK_Num_Lock */ { TK_NULL, TK_Neutral },
/* 0xff80 XK_KP_Space */ { TK_Space, TK_Neutral },
/* 0xff81 */ { TK_NULL, TK_Neutral },
/* 0xff82 */ { TK_NULL, TK_Neutral },
/* 0xff83 */ { TK_NULL, TK_Neutral },
/* 0xff84 */ { TK_NULL, TK_Neutral },
/* 0xff85 */ { TK_NULL, TK_Neutral },
/* 0xff86 */ { TK_NULL, TK_Neutral },
/* 0xff87 */ { TK_NULL, TK_Neutral },
/* 0xff88 */ { TK_NULL, TK_Neutral },
/* 0xff89 XK_KP_Tab */ { TK_Right, TK_Neutral },
/* 0xff8a */ { TK_NULL, TK_Neutral },
/* 0xff8b */ { TK_NULL, TK_Neutral },
/* 0xff8c */ { TK_NULL, TK_Neutral },
/* 0xff8d XK_KP_Enter */ { TK_Enter, TK_Neutral },
/* 0xff8e */ { TK_NULL, TK_Neutral },
/* 0xff8f */ { TK_NULL, TK_Neutral },
/* 0xff90 */ { TK_NULL, TK_Neutral },
/* 0xff91 XK_KP_F1 */ { TK_F1, TK_Neutral },
/* 0xff92 XK_KP_F2 */ { TK_F2, TK_Neutral },
/* 0xff93 XK_KP_F3 */ { TK_F3, TK_Neutral },
/* 0xff94 XK_KP_F4 */ { TK_CapsLock, TK_Neutral },
#if KP_JOYSTICK
/* 0xff95 XK_KP_Home */ { TK_Northwest, TK_Neutral },
/* 0xff96 XK_KP_Left */ { TK_West, TK_Neutral },
/* 0xff97 XK_KP_Up */ { TK_North, TK_Neutral },
/* 0xff98 XK_KP_Right */ { TK_East, TK_Neutral },
/* 0xff99 XK_KP_Down */ { TK_South, TK_Neutral },
/* 0xff9a XK_KP_Prior, XK_KP_Page_Up */ { TK_Northeast, TK_Neutral },
/* 0xff9b XK_KP_Next, XK_KP_Page_Down */ { TK_Southeast, TK_Neutral },
/* 0xff9c XK_KP_End */ { TK_Southwest, TK_Neutral },
/* 0xff9d XK_KP_Begin */ { TK_Fire, TK_Neutral },
/* 0xff9e XK_KP_Insert */ { TK_Fire, TK_Neutral },
#else
/* 0xff95 XK_KP_Home */ { TK_Clear, TK_Neutral },
/* 0xff96 XK_KP_Left */ { TK_Left, TK_Neutral },
/* 0xff97 XK_KP_Up */ { TK_Up, TK_Neutral },
/* 0xff98 XK_KP_Right */ { TK_Right, TK_Neutral },
/* 0xff99 XK_KP_Down */ { TK_Down, TK_Neutral },
/* 0xff9a XK_KP_Prior, XK_KP_Page_Up */ { TK_LeftShift, TK_Neutral },
/* 0xff9b XK_KP_Next, XK_KP_Page_Down */ { TK_RightShift, TK_Neutral },
/* 0xff9c XK_KP_End */ { TK_Unused, TK_Neutral },
/* 0xff9d XK_KP_Begin */ { TK_NULL, TK_Neutral },
/* 0xff9e XK_KP_Insert */ { TK_Underscore, TK_Neutral },
#endif
/* 0xff9f XK_KP_Delete */ { TK_Left, TK_Neutral },
/* 0xffa0 */ { TK_NULL, TK_Neutral },
/* 0xffa1 */ { TK_NULL, TK_Neutral },
/* 0xffa2 */ { TK_NULL, TK_Neutral },
/* 0xffa3 */ { TK_NULL, TK_Neutral },
/* 0xffa4 */ { TK_NULL, TK_Neutral },
/* 0xffa5 */ { TK_NULL, TK_Neutral },
/* 0xffa6 */ { TK_NULL, TK_Neutral },
/* 0xffa7 */ { TK_NULL, TK_Neutral },
/* 0xffa8 */ { TK_NULL, TK_Neutral },
/* 0xffa9 */ { TK_NULL, TK_Neutral },
/* 0xffaa XK_KP_Multiply */ { TK_Colon, TK_ForceShift },
/* 0xffab XK_KP_Add */ { TK_Semicolon, TK_ForceShift },
/* 0xffac XK_KP_Separator*/ { TK_Comma, TK_Neutral },
/* 0xffad XK_KP_Subtract */ { TK_Minus, TK_Neutral },
/* 0xffae XK_KP_Decimal */ { TK_Period, TK_Neutral },
/* 0xffaf XK_KP_Divide */ { TK_Slash, TK_Neutral },
#if KPNUM_JOYSTICK
/* 0xffb0 XK_KP_0 */ { TK_Fire, TK_Neutral },
/* 0xffb1 XK_KP_1 */ { TK_Southwest, TK_Neutral },
/* 0xffb2 XK_KP_2 */ { TK_South, TK_Neutral },
/* 0xffb3 XK_KP_3 */ { TK_Southeast, TK_Neutral },
/* 0xffb4 XK_KP_4 */ { TK_West, TK_Neutral },
/* 0xffb5 XK_KP_5 */ { TK_Fire, TK_Neutral },
/* 0xffb6 XK_KP_6 */ { TK_East, TK_Neutral },
/* 0xffb7 XK_KP_7 */ { TK_Northwest, TK_Neutral },
/* 0xffb8 XK_KP_8 */ { TK_North, TK_Neutral },
/* 0xffb9 XK_KP_9 */ { TK_Northeast, TK_Neutral },
#else
/* 0xffb0 XK_KP_0 */ { TK_0, TK_Neutral },
/* 0xffb1 XK_KP_1 */ { TK_1, TK_Neutral },
/* 0xffb2 XK_KP_2 */ { TK_2, TK_Neutral },
/* 0xffb3 XK_KP_3 */ { TK_3, TK_Neutral },
/* 0xffb4 XK_KP_4 */ { TK_4, TK_Neutral },
/* 0xffb5 XK_KP_5 */ { TK_5, TK_Neutral },
/* 0xffb6 XK_KP_6 */ { TK_6, TK_Neutral },
/* 0xffb7 XK_KP_7 */ { TK_7, TK_Neutral },
/* 0xffb8 XK_KP_8 */ { TK_8, TK_Neutral },
/* 0xffb9 XK_KP_9 */ { TK_9, TK_Neutral },
#endif
/* 0xffba */ { TK_NULL, TK_Neutral },
/* 0xffbb */ { TK_NULL, TK_Neutral },
/* 0xffbc */ { TK_NULL, TK_Neutral },
/* 0xffbd XK_KP_Equal */ { TK_Minus, TK_ForceShift },
/* 0xffbe XK_F1 */ { TK_F1, TK_Neutral },
/* 0xffbf XK_F2 */ { TK_F2, TK_Neutral },
/* 0xffc0 XK_F3 */ { TK_F3, TK_Neutral },
/* 0xffc1 XK_F4 */ { TK_CapsLock, TK_Neutral },
/* 0xffc2 XK_F5 */ { TK_AtSign, TK_Neutral },
/* 0xffc3 XK_F6 */ { TK_0, TK_Neutral },
/* 0xffc4 XK_F7 */ { TK_NULL, TK_Neutral },
/* 0xffc5 XK_F8 */ { TK_NULL, TK_Neutral },
/* 0xffc6 XK_F9 */ { TK_NULL, TK_Neutral },
/* 0xffc7 XK_F10 */ { TK_NULL, TK_Neutral },
/* In some versions of XFree86, XK_F11 to XK_F20 are produced for the
shifted F1 to F10 keys, in some XK_F13 to XK_F20 are produced for
the shifted F1 to F8 keys, and in some the keysyms are not altered.
Arrgh.
*/
#if SHIFT_F1_IS_F11
/* 0xffc8 XK_F11 */ { TK_F1, TK_Neutral },
/* 0xffc9 XK_F12 */ { TK_F2, TK_Neutral },
/* 0xffca XK_F13 */ { TK_F3, TK_Neutral },
/* 0xffcb XK_F14 */ { TK_CapsLock, TK_Neutral },
/* 0xffcc XK_F15 */ { TK_AtSign, TK_Neutral },
/* 0xffcd XK_F16 */ { TK_0, TK_Neutral },
/* 0xffce XK_F17 */ { TK_NULL, TK_Neutral },
/* 0xffcf XK_F18 */ { TK_NULL, TK_Neutral },
#elif SHIFT_F1_IS_F13
/* 0xffc8 XK_F11 */ { TK_NULL, TK_Neutral },
/* 0xffc9 XK_F12 */ { TK_NULL, TK_Neutral },
/* 0xffca XK_F13 */ { TK_F1, TK_Neutral },
/* 0xffcb XK_F14 */ { TK_F2, TK_Neutral },
/* 0xffcc XK_F15 */ { TK_F3, TK_Neutral },
/* 0xffcd XK_F16 */ { TK_CapsLock, TK_Neutral },
/* 0xffce XK_F17 */ { TK_AtSign, TK_Neutral },
/* 0xffcf XK_F18 */ { TK_0, TK_Neutral },
#else
/* 0xffc8 XK_F11 */ { TK_NULL, TK_Neutral },
/* 0xffc9 XK_F12 */ { TK_NULL, TK_Neutral },
/* 0xffca XK_F13 */ { TK_NULL, TK_Neutral },
/* 0xffcb XK_F14 */ { TK_NULL, TK_Neutral },
/* 0xffcc XK_F15 */ { TK_NULL, TK_Neutral },
/* 0xffcd XK_F16 */ { TK_NULL, TK_Neutral },
/* 0xffce XK_F17 */ { TK_NULL, TK_Neutral },
/* 0xffcf XK_F18 */ { TK_NULL, TK_Neutral },
#endif
/* 0xffd0 XK_F19 */ { TK_NULL, TK_Neutral },
/* 0xffd1 XK_F20 */ { TK_NULL, TK_Neutral },
/* 0xffd2 XK_F21 */ { TK_NULL, TK_Neutral },
/* 0xffd3 XK_F22 */ { TK_NULL, TK_Neutral },
/* 0xffd4 XK_F23 */ { TK_NULL, TK_Neutral },
/* 0xffd5 XK_F24 */ { TK_NULL, TK_Neutral },
/* 0xffd6 XK_F25 */ { TK_NULL, TK_Neutral },
/* 0xffd7 XK_F26 */ { TK_NULL, TK_Neutral },
/* 0xffd8 XK_F27 */ { TK_NULL, TK_Neutral },
/* 0xffd9 XK_F28 */ { TK_NULL, TK_Neutral },
/* 0xffda XK_F29 */ { TK_NULL, TK_Neutral },
/* 0xffdb XK_F30 */ { TK_NULL, TK_Neutral },
/* 0xffdc XK_F31 */ { TK_NULL, TK_Neutral },
/* 0xffdd XK_F32 */ { TK_NULL, TK_Neutral },
/* 0xffde XK_F33 */ { TK_NULL, TK_Neutral },
/* 0xffdf XK_F34 */ { TK_NULL, TK_Neutral },
/* 0xffe0 XK_F35 */ { TK_NULL, TK_Neutral },
/* 0xffe1 XK_Shift_L */ { TK_LeftShift, TK_Neutral },
/* 0xffe2 XK_Shift_R */ { TK_RightShift, TK_Neutral },
/* 0xffe3 XK_Control_L */ { TK_Ctrl, TK_Neutral },
/* 0xffe4 XK_Control_R */ { TK_Ctrl, TK_Neutral },
/* 0xffe5 XK_Caps_Lock */ { TK_NULL, TK_Neutral },
/* 0xffe6 XK_Shift_Lock */ { TK_NULL, TK_Neutral },
/* 0xffe7 XK_Meta_L */ { TK_Clear, TK_Neutral },
/* 0xffe8 XK_Meta_R */ { TK_Down, TK_ForceShiftPersistent },
/* 0xffe9 XK_Alt_L */ { TK_NULL, TK_Neutral },
/* 0xffea XK_Alt_R */ { TK_NULL, TK_Neutral },
/* 0xffeb XK_Super_L */ { TK_NULL, TK_Neutral },
/* 0xffec XK_Super_R */ { TK_NULL, TK_Neutral },
/* 0xffed XK_Hyper_L */ { TK_NULL, TK_Neutral },
/* 0xffee XK_Hyper_R */ { TK_NULL, TK_Neutral },
/* 0xffef */ { TK_NULL, TK_Neutral },
/* 0xfff0 */ { TK_NULL, TK_Neutral },
/* 0xfff1 */ { TK_NULL, TK_Neutral },
/* 0xfff2 */ { TK_NULL, TK_Neutral },
/* 0xfff3 */ { TK_NULL, TK_Neutral },
/* 0xfff4 */ { TK_NULL, TK_Neutral },
/* 0xfff5 */ { TK_NULL, TK_Neutral },
/* 0xfff6 */ { TK_NULL, TK_Neutral },
/* 0xfff7 */ { TK_NULL, TK_Neutral },
/* 0xfff8 */ { TK_NULL, TK_Neutral },
/* 0xfff9 */ { TK_NULL, TK_Neutral },
/* 0xfffa */ { TK_NULL, TK_Neutral },
/* 0xfffb */ { TK_NULL, TK_Neutral },
/* 0xfffc */ { TK_NULL, TK_Neutral },
/* 0xfffd */ { TK_NULL, TK_Neutral },
/* 0xfffe */ { TK_NULL, TK_Neutral },
/* 0xffff XK_Delete */ { TK_Left, TK_Neutral }
};
static int keystate[8] = { 0, };
static int force_shift = TK_Neutral;
static int joystate = 0;
static int keys_down = 0;
/* Avoid changing state too fast so keystrokes aren't lost. */
#define STRETCH_AMOUNT 4000
static tstate_t key_stretch_timeout;
int stretch_amount = STRETCH_AMOUNT;
int trs_keydelay = 0;
void trs_kb_reset(void)
{
key_stretch_timeout = z80_state.t_count;
}
int key_heartbeat = 0;
void trs_kb_heartbeat(void)
{
/* Don't hold keys in queue too long */
key_heartbeat++;
}
void trs_kb_bracket(int shifted)
{
/* Set the shift state for the emulation of the "[ {", "\ |",
"] }", "^ ~", and "_ DEL" keys. Some Model 4 keyboard drivers
decode these with [ shifted and { unshifted, etc., while most
other keyboard drivers either ignore them or decode them with
[ unshifted and { shifted. We default to the latter. Note that
these keys didn't exist on real machines anyway.
*/
int i;
for (i=0x5b; i<=0x5f; i++) {
ascii_key_table[i].shift_action =
shifted ? TK_ForceShift : TK_ForceNoShift;
}
for (i=0x7b; i<=0x7f; i++) {
ascii_key_table[i].shift_action =
shifted ? TK_ForceNoShift : TK_ForceShift;
}
}
/* Emulate joystick with the keypad */
int trs_emulate_joystick(int key_down, int bit_action)
{
if (bit_action < TK_Joystick) return 0;
if (key_down) {
joystate |= (bit_action & 0x1f);
} else {
joystate &= ~(bit_action & 0x1f);
}
return 1;
}
int trs_joystick_in(void)
{
#if JOYDEBUG
debug("joy %02x ", joystate);
#endif
return (Uchar) ~joystate;
}
void trs_xlate_keysym(int keysym)
{
int key_down;
KeyTable* kt;
static int shift_action = TK_Neutral;
if (keysym == 0x10000) {
/* force all keys up */
queue_key(TK_AllKeysUp);
shift_action = TK_Neutral;
return;
}
key_down = (keysym & 0x10000) == 0;
if (keysym & 0xff00) {
kt = &function_key_table[keysym & 0xff];
} else {
kt = &ascii_key_table[keysym & 0xff];
}
if (kt->bit_action == TK_NULL) return;
if (trs_emulate_joystick(key_down, kt->bit_action)) return;
if (key_down) {
if (shift_action != TK_ForceShiftPersistent &&
shift_action != kt->shift_action) {
shift_action = kt->shift_action;
queue_key(shift_action);
}
queue_key(kt->bit_action);
} else {
queue_key(kt->bit_action | 0x10000);
if (shift_action != TK_Neutral &&
shift_action == kt->shift_action) {
shift_action = TK_Neutral;
queue_key(shift_action);
}
}
}
static void change_keystate(int action)
{
int key_down, was_down;
int i;
#ifdef KBDEBUG
debug("change_keystate: action 0x%x\n", action);
#endif
switch (action) {
case TK_AllKeysUp:
/* force all keys up */
for (i=0; i<7; i++) {
keystate[i] = 0;
}
force_shift = TK_Neutral;
keys_down = 0;
z80_state.keydelay = 0;
break;
case TK_Neutral:
case TK_ForceShift:
case TK_ForceNoShift:
case TK_ForceShiftPersistent:
force_shift = action;
break;
default:
key_down = TK_DOWN(action);
was_down = (keystate[TK_ADDR(action)] & (1 << TK_DATA(action))) != 0;
if (key_down != was_down) {
if (key_down) {
keystate[TK_ADDR(action)] |= (1 << TK_DATA(action));
keys_down++;
} else {
keystate[TK_ADDR(action)] &= ~(1 << TK_DATA(action));
keys_down--;
}
z80_state.keydelay = keys_down ? trs_keydelay : 0;
}
}
}
static int kb_mem_value(int address)
{
int i, bitpos, data = 0;
for (i=0, bitpos=1; i<7; i++, bitpos<<=1) {
if (address & bitpos) {
data |= keystate[i];
}
}
if (address & 0x80) {
int tmp = keystate[7];
if (trs_model == 1) {
if (force_shift == TK_ForceNoShift) {
/* deactivate shift key */
tmp &= ~1;
} else if (force_shift != TK_Neutral) {
/* activate shift key */
tmp |= 1;
}
} else {
if (force_shift == TK_ForceNoShift) {
/* deactivate both shift keys */
tmp &= ~3;
} else if (force_shift != TK_Neutral) {
/* if no shift keys are down, activate left shift key */
if ((tmp & 3) == 0) tmp |= 1;
}
}
data |= tmp;
}
return data;
}
int trs_kb_mem_read(int address)
{
int key = -1;
int i, wait;
static int recursion = 0;
static int timesseen;
/* Prevent endless recursive calls to this routine (by mem_read_word
below) if REG_SP happens to point to keyboard memory. */
if (recursion) return 0;
/* Avoid delaying key state changes in queue for too long */
if (key_heartbeat > 2) {
do {
key = trs_next_key(0);
if (key >= 0) {
change_keystate(key);
timesseen = 1;
}
} while (key >= 0);
}
/* After each key state change, impose a timeout before the next one
so that the Z80 program doesn't miss any by polling too rarely,
and so that we don't tickle the bugs in some common TRS-80 keyboard
drivers that strike if two keys change simultaneously */
if (key_stretch_timeout - z80_state.t_count > TSTATE_T_MID) {
/* Check if we are in the system keyboard driver, called from
the wait-for-input routine. If so, and there are no
keystrokes queued, and the current state has been seen by
at least 16 such reads, then trs_next_key will pause the
process to avoid burning host CPU needlessly.
The test below works on both Model I and III and is
insensitive to what keyboard driver is being used, as long
as it is called through the wait-for-key routine at ROM
address 0x0049 and has not pushed too much on the stack yet
when it first reads from the key matrix. The search is
needed (at least) for NEWDOS80, which pushes 2 extra bytes
on the stack. */
wait = 0;
if (timesseen++ >= 16) {
recursion = 1;
for (i=0; i<=4; i+=2) {
if (mem_read_word(REG_SP + 2 + i) == 0x4015) {
wait = mem_read_word(REG_SP + 10 + i) == 0x004c;
break;
}
}
recursion = 0;
}
/* Get the next key */
key = trs_next_key(wait);
key_stretch_timeout = z80_state.t_count + stretch_amount;
}
if (key >= 0) {
change_keystate(key);
timesseen = 1;
}
key_heartbeat = 0;
return kb_mem_value(address);
}
void clear_key_queue(void)
{
key_queue_head = 0;
key_queue_entries = 0;
#if QDEBUG
debug("clear_key_queue\n");
#endif
}
void queue_key(int state)
{
key_queue[(key_queue_head + key_queue_entries) % KEY_QUEUE_SIZE] = state;
#if QDEBUG
debug("queue_key 0x%x\n", state);
#endif
if (key_queue_entries < KEY_QUEUE_SIZE) {
key_queue_entries++;
} else {
#if QDEBUG
debug("queue_key overflow\n");
#endif
}
}
int dequeue_key(void)
{
int rval = -1;