| 1 | /* FCE Ultra - NES/Famicom Emulator |
| 2 | * |
| 3 | * Copyright notice for this file: |
| 4 | * Copyright (C) 1998 BERO |
| 5 | * Copyright (C) 2002 Xodnizel |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 20 | */ |
| 21 | |
| 22 | #include "mapinc.h" |
| 23 | |
| 24 | static void FP_FASTAPASS(1) BandaiIRQHook(int a) |
| 25 | { |
| 26 | if(IRQa) |
| 27 | { |
| 28 | IRQCount-=a; |
| 29 | if(IRQCount<0) |
| 30 | { |
| 31 | X6502_IRQBegin(FCEU_IQEXT); |
| 32 | //printf("IRQ: %d, %d\n",scanline,timestamp); |
| 33 | IRQa=0; |
| 34 | IRQCount=0xFFFF; |
| 35 | } |
| 36 | } |
| 37 | } |
| 38 | |
| 39 | static DECLFW(Mapper16_write) |
| 40 | { |
| 41 | A&=0xF; |
| 42 | |
| 43 | if(A<=0x7) |
| 44 | VROM_BANK1(A<<10,V); |
| 45 | else if(A==0x8) |
| 46 | ROM_BANK16(0x8000,V); |
| 47 | else switch(A) { |
| 48 | case 0x9: switch(V&3) { |
| 49 | case 0x00:MIRROR_SET2(1);break; |
| 50 | case 0x01:MIRROR_SET2(0);break; |
| 51 | case 0x02:onemir(0);break; |
| 52 | case 0x03:onemir(1);break; |
| 53 | } |
| 54 | break; |
| 55 | case 0xA:X6502_IRQEnd(FCEU_IQEXT); |
| 56 | IRQa=V&1; |
| 57 | IRQCount=IRQLatch; |
| 58 | break; |
| 59 | case 0xB:IRQLatch&=0xFF00; IRQLatch|=V; |
| 60 | break; |
| 61 | case 0xC:IRQLatch&=0xFF; IRQLatch|=V<<8; |
| 62 | break; |
| 63 | case 0xD: break;/* Serial EEPROM control port */ |
| 64 | } |
| 65 | } |
| 66 | |
| 67 | // Famicom jump 2: |
| 68 | // 0-7: Lower bit of data selects which 256KB PRG block is in use. |
| 69 | // This seems to be a hack on the developers' part, so I'll make emulation |
| 70 | // of it a hack(I think the current PRG block would depend on whatever the |
| 71 | // lowest bit of the CHR bank switching register that corresponds to the |
| 72 | // last CHR address read). |
| 73 | |
| 74 | static void PRGO(void) |
| 75 | { |
| 76 | uint32 base=(mapbyte1[0]&1)<<4; |
| 77 | ROM_BANK16(0x8000,(mapbyte2[0]&0xF)|base); |
| 78 | ROM_BANK16(0xC000,base|0xF); |
| 79 | } |
| 80 | |
| 81 | static DECLFW(Mapper153_write) |
| 82 | { |
| 83 | A&=0xF; |
| 84 | if(A<=0x7) |
| 85 | { |
| 86 | mapbyte1[A&7]=V; |
| 87 | PRGO(); |
| 88 | } |
| 89 | else if(A==0x8) |
| 90 | { |
| 91 | mapbyte2[0]=V; |
| 92 | PRGO(); |
| 93 | } |
| 94 | else switch(A) { |
| 95 | case 0x9: switch(V&3) { |
| 96 | case 0x00:MIRROR_SET2(1);break; |
| 97 | case 0x01:MIRROR_SET2(0);break; |
| 98 | case 0x02:onemir(0);break; |
| 99 | case 0x03:onemir(1);break; |
| 100 | } |
| 101 | break; |
| 102 | case 0xA:X6502_IRQEnd(FCEU_IQEXT); |
| 103 | IRQa=V&1; |
| 104 | IRQCount=IRQLatch; |
| 105 | break; |
| 106 | case 0xB:IRQLatch&=0xFF00; |
| 107 | IRQLatch|=V; |
| 108 | break; |
| 109 | case 0xC:IRQLatch&=0xFF; |
| 110 | IRQLatch|=V<<8; |
| 111 | break; |
| 112 | } |
| 113 | } |
| 114 | |
| 115 | void Mapper16_init(void) |
| 116 | { |
| 117 | MapIRQHook=BandaiIRQHook; |
| 118 | SetWriteHandler(0x6000,0xFFFF,Mapper16_write); |
| 119 | } |
| 120 | |
| 121 | void Mapper153_init(void) |
| 122 | { |
| 123 | MapIRQHook=BandaiIRQHook; |
| 124 | SetWriteHandler(0x8000,0xFFFF,Mapper153_write); |
| 125 | /* This mapper/board seems to have WRAM at $6000-$7FFF, so I'll let the |
| 126 | main ines code take care of that memory region. */ |
| 127 | } |
| 128 | |
| 129 | |
| 130 | static uint8 BarcodeData[256]; |
| 131 | static int BarcodeReadPos; |
| 132 | static int BarcodeCycleCount; |
| 133 | static uint32 BarcodeOut; |
| 134 | |
| 135 | int FCEUI_DatachSet(const uint8 *rcode) |
| 136 | { |
| 137 | int prefix_parity_type[10][6] = { |
| 138 | {0,0,0,0,0,0}, {0,0,1,0,1,1}, {0,0,1,1,0,1}, {0,0,1,1,1,0}, |
| 139 | {0,1,0,0,1,1}, {0,1,1,0,0,1}, {0,1,1,1,0,0}, {0,1,0,1,0,1}, |
| 140 | {0,1,0,1,1,0}, {0,1,1,0,1,0} |
| 141 | }; |
| 142 | int data_left_odd[10][7] = { |
| 143 | {0,0,0,1,1,0,1}, {0,0,1,1,0,0,1}, {0,0,1,0,0,1,1}, {0,1,1,1,1,0,1}, |
| 144 | {0,1,0,0,0,1,1}, {0,1,1,0,0,0,1}, {0,1,0,1,1,1,1}, {0,1,1,1,0,1,1}, |
| 145 | {0,1,1,0,1,1,1}, {0,0,0,1,0,1,1} |
| 146 | }; |
| 147 | int data_left_even[10][7] = { |
| 148 | {0,1,0,0,1,1,1}, {0,1,1,0,0,1,1}, {0,0,1,1,0,1,1}, {0,1,0,0,0,0,1}, |
| 149 | {0,0,1,1,1,0,1}, {0,1,1,1,0,0,1}, {0,0,0,0,1,0,1}, {0,0,1,0,0,0,1}, |
| 150 | {0,0,0,1,0,0,1}, {0,0,1,0,1,1,1} |
| 151 | }; |
| 152 | int data_right[10][7] = { |
| 153 | {1,1,1,0,0,1,0}, {1,1,0,0,1,1,0}, {1,1,0,1,1,0,0}, {1,0,0,0,0,1,0}, |
| 154 | {1,0,1,1,1,0,0}, {1,0,0,1,1,1,0}, {1,0,1,0,0,0,0}, {1,0,0,0,1,0,0}, |
| 155 | {1,0,0,1,0,0,0}, {1,1,1,0,1,0,0} |
| 156 | }; |
| 157 | uint8 code[13+1]; |
| 158 | uint32 tmp_p=0; |
| 159 | int i, j; |
| 160 | int len; |
| 161 | |
| 162 | for(i=len=0;i<13;i++) |
| 163 | { |
| 164 | if(!rcode[i]) break; |
| 165 | |
| 166 | if((code[i]=rcode[i]-'0') > 9) |
| 167 | return(0); |
| 168 | len++; |
| 169 | } |
| 170 | if(len!=13 && len!=12 && len!=8 && len!=7) return(0); |
| 171 | |
| 172 | #define BS(x) BarcodeData[tmp_p]=x;tmp_p++ |
| 173 | |
| 174 | for(j=0;j<32;j++) |
| 175 | { |
| 176 | BS(0x00); |
| 177 | } |
| 178 | |
| 179 | /* Left guard bars */ |
| 180 | BS(1); BS(0); BS(1); |
| 181 | |
| 182 | if(len==13 || len==12) |
| 183 | { |
| 184 | uint32 csum; |
| 185 | |
| 186 | for(i=0;i<6;i++) |
| 187 | if(prefix_parity_type[code[0]][i]) |
| 188 | { |
| 189 | for(j=0;j<7;j++) |
| 190 | { |
| 191 | BS(data_left_even[code[i+1]][j]); |
| 192 | } |
| 193 | } |
| 194 | else |
| 195 | for(j=0;j<7;j++) |
| 196 | { |
| 197 | BS(data_left_odd[code[i+1]][j]); |
| 198 | } |
| 199 | |
| 200 | /* Center guard bars */ |
| 201 | BS(0); BS(1); BS(0); BS(1); BS(0); |
| 202 | |
| 203 | for(i=7;i<12;i++) |
| 204 | for(j=0;j<7;j++) |
| 205 | { |
| 206 | BS(data_right[code[i]][j]); |
| 207 | } |
| 208 | csum=0; |
| 209 | for(i=0;i<12;i++) csum+=code[i]*((i&1)?3:1); |
| 210 | csum=(10-(csum%10))%10; |
| 211 | //printf("%d\n",csum); |
| 212 | for(j=0;j<7;j++) |
| 213 | { |
| 214 | BS(data_right[csum][j]); |
| 215 | } |
| 216 | |
| 217 | } |
| 218 | else if(len==8 || len==7) |
| 219 | { |
| 220 | uint32 csum=0; |
| 221 | |
| 222 | for(i=0;i<7;i++) csum+=(i&1)?code[i]:(code[i]*3); |
| 223 | |
| 224 | csum=(10-(csum%10))%10; |
| 225 | |
| 226 | for(i=0;i<4;i++) |
| 227 | for(j=0;j<7;j++) |
| 228 | { |
| 229 | BS(data_left_odd[code[i]][j]); |
| 230 | } |
| 231 | |
| 232 | |
| 233 | /* Center guard bars */ |
| 234 | BS(0); BS(1); BS(0); BS(1); BS(0); |
| 235 | |
| 236 | for(i=4;i<7;i++) |
| 237 | for(j=0;j<7;j++) |
| 238 | { |
| 239 | BS(data_right[code[i]][j]); |
| 240 | } |
| 241 | |
| 242 | for(j=0;j<7;j++) |
| 243 | { BS(data_right[csum][j]);} |
| 244 | |
| 245 | } |
| 246 | |
| 247 | /* Right guard bars */ |
| 248 | BS(1); BS(0); BS(1); |
| 249 | |
| 250 | for(j=0;j<32;j++) |
| 251 | { |
| 252 | BS(0x00); |
| 253 | } |
| 254 | |
| 255 | BS(0xFF); |
| 256 | #undef BS |
| 257 | BarcodeReadPos=0; |
| 258 | BarcodeOut=0x8; |
| 259 | BarcodeCycleCount=0; |
| 260 | return(1); |
| 261 | } |
| 262 | |
| 263 | static void FP_FASTAPASS(1) BarcodeIRQHook(int a) |
| 264 | { |
| 265 | BandaiIRQHook(a); |
| 266 | |
| 267 | BarcodeCycleCount+=a; |
| 268 | |
| 269 | if(BarcodeCycleCount >= 1000) |
| 270 | { |
| 271 | BarcodeCycleCount -= 1000; |
| 272 | if(BarcodeData[BarcodeReadPos]==0xFF) |
| 273 | { |
| 274 | BarcodeOut=0; |
| 275 | } |
| 276 | else |
| 277 | { |
| 278 | BarcodeOut=(BarcodeData[BarcodeReadPos]^1)<<3; |
| 279 | BarcodeReadPos++; |
| 280 | } |
| 281 | } |
| 282 | } |
| 283 | |
| 284 | static DECLFR(Mapper157_read) |
| 285 | { |
| 286 | uint8 ret; |
| 287 | |
| 288 | ret=BarcodeOut; |
| 289 | return(ret); |
| 290 | } |
| 291 | |
| 292 | void Mapper157_init(void) |
| 293 | { |
| 294 | FCEUGameInfo.cspecial = SIS_DATACH; |
| 295 | MapIRQHook=BarcodeIRQHook; |
| 296 | SetWriteHandler(0x6000,0xFFFF,Mapper16_write); |
| 297 | SetReadHandler(0x6000,0x7FFF,Mapper157_read); |
| 298 | |
| 299 | BarcodeData[0]=0xFF; |
| 300 | BarcodeReadPos=0; |
| 301 | BarcodeOut=0; |
| 302 | BarcodeCycleCount=0; |
| 303 | } |