cddNES is a cycle accurate NES emulator written in pure C with no dependencies (although the ui has a few). The code base is lean with a focus on accuracy and readability--but don't let its minimal nature fool you, it passes almost every known test and successfully emulates tricky games such as Battletoads with a only a handful of minor issues listed below.
cddNES also serves as the canonical example of a Parsec SDK HOST_GAME implementation, with many different renderers supported or on the way. See the Parsec SDK repo for more information.
- ppu_nmi_sync: Leftmost pixel is a few short of the Famicom result
- ppu_dpcmletterbox: Slight wiggle periodically, Famicom does not
- Micro Machines: very close, but needs revised sprite hit timing after resolving nmi_sync
UI dependencies are included in this repo as static libraries for convenience. Simply type make or nmake (on Windows) to build the emulator.
cddNES ships with Alfonzo Melee as the default ROM for a two player example. As long as the Parsec SDK binary is alongside the cddNES binary, the Parsec menu item will appear and allow you to authenticate then share your game.
Most of the Parsec SDK specific integration can be found in main.c and the render directory. All Parsec API calls are wrapped in api.c. See the Parsec SDK repo for more information.
-console Spawns a console window on Windows
-headless Runs cddNES in headless mode. Parsec session must also be supplied.
-session=SESSION_ID Start cddNES with an authenticated Parsec session
- Remap keyboard/gamepad
- NES rom database via CRC32
- Save states
- NSF player
- PAL support
- No sprite overflow
- Zapper support
- FDS support
- Vs. support
- Cheats/Game Genie
*000 *001 *002 *003 *004 ^005 006 *007 008 *009 *010 *011 012 *013 014 015
†016 017 018 ^019 020 *021 *022 *023 ^024 *025 ^026 027 028 029 *030 *031
032 033 *034 035 036 037 *038 039 040 041 042 043 044 045 046 047
048 049 050 051 052 053 054 055 056 057 058 059 060 061 062 063
064 065 *066 067 068 ^069 *070 *071 072 073 074 075 076 *077 *078 *079
080 081 082 083 084 ^085 086 *087 088 *089 090 091 092 *093 *094 095
096 *097 098 099 100 *101 102 103 104 105 106 *107 108 109 110 *111
112 *113 114 115 116 117 118 119 120 121 122 123 124 125 126 127
128 129 130 131 132 133 134 135 136 137 138 139 *140 141 142 143
144 *145 *146 147 *148 *149 150 151 *152 153 154 155 156 157 158 †159
160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175
176 177 178 179 *180 181 182 183 *184 *185 186 187 188 189 190 191
192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207
208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223
224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239
240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255
^ - Missing expansion audio
† - Missing EEPROM support
18 -- Jaleco SS88006
64, 158 -- RAMBO-1
99 -- Vs.
Namco: 210
MMC3: 74, 192, 206, 76, 88, 154, 95, 112, 119, 191, 118, 155, 194, 195
Stateful: 32, 33, 68, (72, 92), 75, (80, 207), 82, 86, 190, 218
Stateful w/ IRQ: 42, 48, 65, 67, 73, 165
Multicart: 15, 28, 37, 41, 47, 105, 228, 234