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https://github.com/dborth/fceugx.git
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103 lines
2.5 KiB
C
103 lines
2.5 KiB
C
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/* FCE Ultra - NES/Famicom Emulator
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*
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* Copyright notice for this file:
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* Copyright (C) 2002 Xodnizel
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <string.h>
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#include "share.h"
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#include "fkb.h"
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#define AK2(x,y) ( (FKB_##x) | (FKB_##y <<8) )
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#define AK(x) FKB_##x
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static uint8 bufit[0x49];
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static uint8 ksmode;
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static uint8 ksindex;
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static uint16 matrix[9][2][4]=
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{
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{{AK(F8),AK(RETURN),AK(BRACKETLEFT),AK(BRACKETRIGHT)},
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{AK(KANA),AK(RIGHTSHIFT),AK(BACKSLASH),AK(STOP)}},
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{{AK(F7),AK(AT),AK(COLON),AK(SEMICOLON)},
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{AK(UNDERSCORE),AK(SLASH),AK(MINUS),AK(CARET)}},
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{{AK(F6),AK(O),AK(L),AK(K)},
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{AK(PERIOD),AK(COMMA),AK(P),AK(0)}},
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{{AK(F5),AK(I),AK(U),AK(J)},
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{AK(M),AK(N),AK(9),AK(8)}},
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{{AK(F4),AK(Y),AK(G),AK(H)},
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{AK(B),AK(V),AK(7),AK(6)}},
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{{AK(F3),AK(T),AK(R),AK(D)},
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{AK(F),AK(C),AK(5),AK(4)}},
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{{AK(F2),AK(W),AK(S),AK(A)},
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{AK(X),AK(Z),AK(E),AK(3)}},
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{{AK(F1),AK(ESCAPE),AK(Q),AK(CONTROL)},
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{AK(LEFTSHIFT),AK(GRAPH),AK(1),AK(2)}},
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{{AK(CLEAR),AK(UP),AK(RIGHT),AK(LEFT)},
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{AK(DOWN),AK(SPACE),AK(DELETE),AK(INSERT)}},
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};
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static void FP_FASTAPASS(1) FKB_Write(uint8 v)
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{
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v>>=1;
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if(v&2)
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{
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if((ksmode&1) && !(v&1))
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ksindex=(ksindex+1)%9;
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}
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ksmode=v;
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}
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static uint8 FP_FASTAPASS(2) FKB_Read(int w, uint8 ret)
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{
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//printf("$%04x, %d, %d\n",w+0x4016,ksindex,ksmode&1);
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if(w)
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{
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int x;
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ret&=~0x1E;
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for(x=0;x<4;x++)
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if(bufit[ matrix[ksindex][ksmode&1][x]&0xFF ] || bufit[ matrix[ksindex][ksmode&1][x]>>8])
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{
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ret|=1<<(x+1);
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}
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ret^=0x1E;
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}
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return(ret);
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}
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static void FKB_Strobe(void)
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{
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ksmode=0;
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ksindex=0;
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//printf("strobe\n");
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}
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static void FP_FASTAPASS(2) FKB_Update(void *data, int arg)
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{
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memcpy(bufit+1,data,0x48);
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}
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static INPUTCFC FKB={FKB_Read,FKB_Write,FKB_Strobe,FKB_Update,0,0};
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INPUTCFC *FCEU_InitFKB(void)
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{
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memset(bufit,0,sizeof(bufit));
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ksmode=ksindex=0;
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return(&FKB);
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}
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