| 1 | /* FCE Ultra - NES/Famicom Emulator |
| 2 | * |
| 3 | * Copyright notice for this file: |
| 4 | * Copyright (C) 2002 Xodnizel |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | */ |
| 20 | |
| 21 | #include <string.h> |
| 22 | #include "share.h" |
| 23 | #include "fkb.h" |
| 24 | #define AK2(x,y) ( (FKB_##x) | (FKB_##y <<8) ) |
| 25 | #define AK(x) FKB_##x |
| 26 | |
| 27 | static uint8 bufit[0x49]; |
| 28 | static uint8 ksmode; |
| 29 | static uint8 ksindex; |
| 30 | |
| 31 | |
| 32 | static uint16 matrix[9][2][4]= |
| 33 | { |
| 34 | {{AK(F8),AK(RETURN),AK(BRACKETLEFT),AK(BRACKETRIGHT)}, |
| 35 | {AK(KANA),AK(RIGHTSHIFT),AK(BACKSLASH),AK(STOP)}}, |
| 36 | {{AK(F7),AK(AT),AK(COLON),AK(SEMICOLON)}, |
| 37 | {AK(UNDERSCORE),AK(SLASH),AK(MINUS),AK(CARET)}}, |
| 38 | {{AK(F6),AK(O),AK(L),AK(K)}, |
| 39 | {AK(PERIOD),AK(COMMA),AK(P),AK(0)}}, |
| 40 | {{AK(F5),AK(I),AK(U),AK(J)}, |
| 41 | {AK(M),AK(N),AK(9),AK(8)}}, |
| 42 | {{AK(F4),AK(Y),AK(G),AK(H)}, |
| 43 | {AK(B),AK(V),AK(7),AK(6)}}, |
| 44 | {{AK(F3),AK(T),AK(R),AK(D)}, |
| 45 | {AK(F),AK(C),AK(5),AK(4)}}, |
| 46 | {{AK(F2),AK(W),AK(S),AK(A)}, |
| 47 | {AK(X),AK(Z),AK(E),AK(3)}}, |
| 48 | {{AK(F1),AK(ESCAPE),AK(Q),AK(CONTROL)}, |
| 49 | {AK(LEFTSHIFT),AK(GRAPH),AK(1),AK(2)}}, |
| 50 | {{AK(CLEAR),AK(UP),AK(RIGHT),AK(LEFT)}, |
| 51 | {AK(DOWN),AK(SPACE),AK(DELETE),AK(INSERT)}}, |
| 52 | }; |
| 53 | |
| 54 | static void FP_FASTAPASS(1) FKB_Write(uint8 v) |
| 55 | { |
| 56 | v>>=1; |
| 57 | if(v&2) |
| 58 | { |
| 59 | if((ksmode&1) && !(v&1)) |
| 60 | ksindex=(ksindex+1)%9; |
| 61 | } |
| 62 | ksmode=v; |
| 63 | } |
| 64 | |
| 65 | static uint8 FP_FASTAPASS(2) FKB_Read(int w, uint8 ret) |
| 66 | { |
| 67 | //printf("$%04x, %d, %d\n",w+0x4016,ksindex,ksmode&1); |
| 68 | if(w) |
| 69 | { |
| 70 | int x; |
| 71 | |
| 72 | ret&=~0x1E; |
| 73 | for(x=0;x<4;x++) |
| 74 | if(bufit[ matrix[ksindex][ksmode&1][x]&0xFF ] || bufit[ matrix[ksindex][ksmode&1][x]>>8]) |
| 75 | { |
| 76 | ret|=1<<(x+1); |
| 77 | } |
| 78 | ret^=0x1E; |
| 79 | } |
| 80 | return(ret); |
| 81 | } |
| 82 | |
| 83 | static void FKB_Strobe(void) |
| 84 | { |
| 85 | ksmode=0; |
| 86 | ksindex=0; |
| 87 | //printf("strobe\n"); |
| 88 | } |
| 89 | |
| 90 | static void FP_FASTAPASS(2) FKB_Update(void *data, int arg) |
| 91 | { |
| 92 | memcpy(bufit+1,data,0x48); |
| 93 | } |
| 94 | |
| 95 | static INPUTCFC FKB={FKB_Read,FKB_Write,FKB_Strobe,FKB_Update,0,0}; |
| 96 | |
| 97 | INPUTCFC *FCEU_InitFKB(void) |
| 98 | { |
| 99 | memset(bufit,0,sizeof(bufit)); |
| 100 | ksmode=ksindex=0; |
| 101 | return(&FKB); |
| 102 | } |