Everdrive N8: Difference between revisions
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(Update the compatibility table to reference the latest version of Everdrive) |
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== Mapper compatibility == | == Mapper compatibility == | ||
As of the OS update v1.20 in 2019, the Everdrive N8 supports the following [[mapper]]s: [https://krikzz.com/pub/support/everdrive-n8/original-series/OS/changelist.txt] | |||
{| class="wikitable" | {| class="wikitable" | ||
| Line 49: | Line 49: | ||
| [[iNES Mapper 025|025]] | | [[iNES Mapper 025|025]] | ||
| [[iNES Mapper 026|026]] | | [[iNES Mapper 026|026]] | ||
| | | [[iNES Mapper 027|027]] | ||
| [[iNES Mapper 028|028]] | | [[iNES Mapper 028|028]] | ||
| --- <!-- [[iNES Mapper 029|029]] --> | | --- <!-- [[iNES Mapper 029|029]] --> | ||
| | | [[iNES Mapper 030|030]] | ||
| [[iNES Mapper 031|031]] | | [[iNES Mapper 031|031]] | ||
|- | |- | ||
| Line 58: | Line 58: | ||
| [[iNES Mapper 033|033]] | | [[iNES Mapper 033|033]] | ||
| [[iNES Mapper 034|034]] | | [[iNES Mapper 034|034]] | ||
| | | [[iNES Mapper 035|035]] | ||
| [[iNES Mapper 036|036]] | | [[iNES Mapper 036|036]] | ||
| | | [[iNES Mapper 037|037]] | ||
| [[iNES Mapper 038|038]] | | [[iNES Mapper 038|038]] | ||
| --- <!-- [[iNES Mapper 039|039]] --> | | --- <!-- [[iNES Mapper 039|039]] --> | ||
| Line 67: | Line 67: | ||
| [[iNES Mapper 042|042]] | | [[iNES Mapper 042|042]] | ||
| --- <!-- [[iNES Mapper 043|043]] --> | | --- <!-- [[iNES Mapper 043|043]] --> | ||
| | | [[iNES Mapper 044|044]] | ||
| | | [[iNES Mapper 045|045]] | ||
| --- <!-- [[iNES Mapper 046|046]] --> | | --- <!-- [[iNES Mapper 046|046]] --> | ||
| [[iNES Mapper 047|047]] | | [[iNES Mapper 047|047]] | ||
|- | |- | ||
| [[iNES Mapper 048|048]] | | [[iNES Mapper 048|048]] | ||
| | | [[iNES Mapper 049|049]] | ||
| | | [[iNES Mapper 050|050]] | ||
| | | [[iNES Mapper 051|051]] | ||
| | | [[iNES Mapper 052|052]] | ||
| --- <!-- [[iNES Mapper 053|053]] --> | | --- <!-- [[iNES Mapper 053|053]] --> | ||
| --- <!-- [[iNES Mapper 054|054]] --> | | --- <!-- [[iNES Mapper 054|054]] --> | ||
| --- <!-- [[iNES Mapper 055|055]] --> | | --- <!-- [[iNES Mapper 055|055]] --> | ||
| | | [[iNES Mapper 056|056]] | ||
| [[iNES Mapper 057|057]] | | [[iNES Mapper 057|057]] | ||
| [[iNES Mapper 058|058]] | | [[iNES Mapper 058|058]] | ||
| --- <!-- [[iNES Mapper 059|059]] --> | | --- <!-- [[iNES Mapper 059|059]] --> | ||
| | | [[iNES Mapper 060|060]] | ||
| [[iNES Mapper 061|061]] | | [[iNES Mapper 061|061]] | ||
| --- <!-- [[iNES Mapper 062|062]] --> | | --- <!-- [[iNES Mapper 062|062]] --> | ||
| Line 130: | Line 130: | ||
| [[iNES Mapper 101|101]] | | [[iNES Mapper 101|101]] | ||
| --- <!-- [[iNES Mapper 102|102]] --> | | --- <!-- [[iNES Mapper 102|102]] --> | ||
| | | [[iNES Mapper 103|103]] | ||
| --- <!-- [[iNES Mapper 104|104]] --> | | --- <!-- [[iNES Mapper 104|104]] --> | ||
| | | [[iNES Mapper 105|105]] | ||
| | | [[iNES Mapper 106|106]] | ||
| [[iNES Mapper 107|107]] | | [[iNES Mapper 107|107]] | ||
| | | [[iNES Mapper 108|108]] | ||
| --- <!-- [[iNES Mapper 109|109]] --> | | --- <!-- [[iNES Mapper 109|109]] --> | ||
| --- <!-- [[iNES Mapper 110|110]] --> | | --- <!-- [[iNES Mapper 110|110]] --> | ||
| Line 145: | Line 145: | ||
| [[iNES Mapper 115|115]] | | [[iNES Mapper 115|115]] | ||
| --- <!-- [[iNES Mapper 116|116]] --> | | --- <!-- [[iNES Mapper 116|116]] --> | ||
| | | [[iNES Mapper 117|117]] | ||
| [[iNES Mapper 118|118]] | | [[iNES Mapper 118|118]] | ||
| [[iNES Mapper 119|119]] | | [[iNES Mapper 119|119]] | ||
| Line 161: | Line 161: | ||
| --- <!-- [[iNES Mapper 130|130]] --> | | --- <!-- [[iNES Mapper 130|130]] --> | ||
| --- <!-- [[iNES Mapper 131|131]] --> | | --- <!-- [[iNES Mapper 131|131]] --> | ||
| | | [[iNES Mapper 132|132]] | ||
| [[iNES Mapper 133|133]] | | [[iNES Mapper 133|133]] | ||
| --- <!-- [[iNES Mapper 134|134]] --> | | --- <!-- [[iNES Mapper 134|134]] --> | ||
| --- <!-- [[iNES Mapper 135|135]] --> | | --- <!-- [[iNES Mapper 135|135]] --> | ||
| | | [[iNES Mapper 136|136]] | ||
| [[iNES Mapper 137|137]] | | [[iNES Mapper 137|137]] | ||
| [[iNES Mapper 138|138]] | | [[iNES Mapper 138|138]] | ||
| Line 171: | Line 171: | ||
| [[iNES Mapper 140|140]] | | [[iNES Mapper 140|140]] | ||
| [[iNES Mapper 141|141]] | | [[iNES Mapper 141|141]] | ||
| | | [[iNES Mapper 142|142]] | ||
| | | [[iNES Mapper 143|143]] | ||
|- | |- | ||
| | | [[iNES Mapper 144|144]] | ||
| | | [[iNES Mapper 145|145]] | ||
| [[iNES Mapper 146|146]] | | [[iNES Mapper 146|146]] | ||
| [[iNES Mapper 147|147]] | | [[iNES Mapper 147|147]] | ||
| [[iNES Mapper 148|148]] | | [[iNES Mapper 148|148]] | ||
| | | [[iNES Mapper 149|149]] | ||
| [[iNES Mapper 150|150]] | | [[iNES Mapper 150|150]] | ||
| [[iNES Mapper 151|151]] | | [[iNES Mapper 151|151]] | ||
| Line 186: | Line 186: | ||
| [[iNES Mapper 154|154]] | | [[iNES Mapper 154|154]] | ||
| --- <!-- [[iNES Mapper 155|155]] --> | | --- <!-- [[iNES Mapper 155|155]] --> | ||
| | | [[iNES Mapper 156|156]] | ||
| --- <!-- [[iNES Mapper 157|157]] --> | | --- <!-- [[iNES Mapper 157|157]] --> | ||
| [[iNES Mapper 158|158]] | | [[iNES Mapper 158|158]] | ||
| | | [[iNES Mapper 159|159]] | ||
|- | |- | ||
| --- <!-- [[iNES Mapper 160|160]] --> | | --- <!-- [[iNES Mapper 160|160]] --> | ||
| Line 196: | Line 196: | ||
| --- <!-- [[iNES Mapper 163|163]] --> | | --- <!-- [[iNES Mapper 163|163]] --> | ||
| [[iNES Mapper 164|164]] | | [[iNES Mapper 164|164]] | ||
| | | [[iNES Mapper 165|165]] | ||
| --- <!-- [[iNES Mapper 166|166]] --> | | --- <!-- [[iNES Mapper 166|166]] --> | ||
| --- <!-- [[iNES Mapper 167|167]] --> | | --- <!-- [[iNES Mapper 167|167]] --> | ||
| Line 202: | Line 202: | ||
| --- <!-- [[iNES Mapper 169|169]] --> | | --- <!-- [[iNES Mapper 169|169]] --> | ||
| --- <!-- [[iNES Mapper 170|170]] --> | | --- <!-- [[iNES Mapper 170|170]] --> | ||
| | | [[iNES Mapper 171|171]] | ||
| | | [[iNES Mapper 172|172]] | ||
| | | [[iNES Mapper 173|173]] | ||
| --- <!-- [[iNES Mapper 174|174]] --> | | --- <!-- [[iNES Mapper 174|174]] --> | ||
| | | [[iNES Mapper 175|175]] | ||
|- | |- | ||
| | | [[iNES Mapper 176|176]] | ||
| | | [[iNES Mapper 177|177]] | ||
| [[iNES Mapper 178|178]] | | [[iNES Mapper 178|178]] | ||
| --- <!-- [[iNES Mapper 179|179]] --> | | --- <!-- [[iNES Mapper 179|179]] --> | ||
| Line 215: | Line 215: | ||
| --- <!-- [[iNES Mapper 181|181]] --> | | --- <!-- [[iNES Mapper 181|181]] --> | ||
| [[iNES Mapper 182|182]] | | [[iNES Mapper 182|182]] | ||
| | | [[iNES Mapper 183|183]] | ||
| [[iNES Mapper 184|184]] | | [[iNES Mapper 184|184]] | ||
| [[iNES Mapper 185|185]] | | [[iNES Mapper 185|185]] | ||
| | | [[iNES Mapper 186|186]] | ||
| | | [[iNES Mapper 187|187]] | ||
| [[iNES Mapper 188|188]] | | [[iNES Mapper 188|188]] | ||
| [[iNES Mapper 189|189]] | | [[iNES Mapper 189|189]] | ||
| | | [[iNES Mapper 190|190]] | ||
| [[iNES Mapper 191|191]] | | [[iNES Mapper 191|191]] | ||
|- | |- | ||
| Line 230: | Line 230: | ||
| --- <!-- [[iNES Mapper 195|195]] --> | | --- <!-- [[iNES Mapper 195|195]] --> | ||
| [[iNES Mapper 196|196]] | | [[iNES Mapper 196|196]] | ||
| | | [[iNES Mapper 197|197]] | ||
| | | [[iNES Mapper 198|198]] | ||
| | | [[iNES Mapper 199|199]] | ||
| [[iNES Mapper 200|200]] | | [[iNES Mapper 200|200]] | ||
| [[iNES Mapper 201|201]] | | [[iNES Mapper 201|201]] | ||
| Line 247: | Line 247: | ||
| [[iNES Mapper 211|211]] | | [[iNES Mapper 211|211]] | ||
| [[iNES Mapper 212|212]] | | [[iNES Mapper 212|212]] | ||
| | | [[iNES Mapper 213|213]] | ||
| | | [[iNES Mapper 214|214]] | ||
| --- <!-- [[iNES Mapper 215|215]] --> | | --- <!-- [[iNES Mapper 215|215]] --> | ||
| | | [[iNES Mapper 216|216]] | ||
| --- <!-- [[iNES Mapper 217|217]] --> | | --- <!-- [[iNES Mapper 217|217]] --> | ||
| --- <!-- [[iNES Mapper 218|218]] --> | | --- <!-- [[iNES Mapper 218|218]] --> | ||
| [[iNES Mapper 219|219]] | | [[iNES Mapper 219|219]] | ||
| [[iNES Mapper 220|220]] | | [[iNES Mapper 220|220]] | ||
| | | [[iNES Mapper 221|221]] | ||
| | | [[iNES Mapper 222|222]] | ||
| --- <!-- [[iNES Mapper 223|223]] --> | | --- <!-- [[iNES Mapper 223|223]] --> | ||
|- | |- | ||
| Line 263: | Line 263: | ||
| --- <!-- [[iNES Mapper 226|226]] --> | | --- <!-- [[iNES Mapper 226|226]] --> | ||
| [[iNES Mapper 227|227]] | | [[iNES Mapper 227|227]] | ||
| | | [[iNES Mapper 228|228]] | ||
| | | [[iNES Mapper 229|229]] | ||
| --- <!-- [[iNES Mapper 230|230]] --> | | --- <!-- [[iNES Mapper 230|230]] --> | ||
| [[iNES Mapper 231|231]] | | [[iNES Mapper 231|231]] | ||
| Line 273: | Line 273: | ||
| --- <!-- [[iNES Mapper 236|236]] --> | | --- <!-- [[iNES Mapper 236|236]] --> | ||
| --- <!-- [[iNES Mapper 237|237]] --> | | --- <!-- [[iNES Mapper 237|237]] --> | ||
| | | [[iNES Mapper 238|238]] | ||
| --- <!-- [[iNES Mapper 239|239]] --> | | --- <!-- [[iNES Mapper 239|239]] --> | ||
|- | |- | ||
| Line 280: | Line 280: | ||
| [[iNES Mapper 242|242]] | | [[iNES Mapper 242|242]] | ||
| [[iNES Mapper 243|243]] | | [[iNES Mapper 243|243]] | ||
| | | [[iNES Mapper 244|244]] | ||
| [[iNES Mapper 245|245]] | | [[iNES Mapper 245|245]] | ||
| [[iNES Mapper 246|246]] | | [[iNES Mapper 246|246]] | ||
| --- <!-- [[iNES Mapper 247|247]] --> | | --- <!-- [[iNES Mapper 247|247]] --> | ||
| | | [[iNES Mapper 248|248]] | ||
| | | [[iNES Mapper 249|249]] | ||
| | | [[iNES Mapper 250|250]] | ||
| --- <!-- [[iNES Mapper 251|251]] --> | | --- <!-- [[iNES Mapper 251|251]] --> | ||
| | | [[iNES Mapper 252|252]] | ||
| --- <!-- [[iNES Mapper 253|253]] --> | | --- <!-- [[iNES Mapper 253|253]] --> | ||
| --- <!-- [[iNES Mapper 254|254]] --> | | --- <!-- [[iNES Mapper 254|254]] --> | ||
Revision as of 17:40, 27 July 2022
The Everdrive N8 is a flash cartridge made by Krikzz. It uses an FPGA to emulate a wide variety of mappers, allowing the user to store a large collection of ROMs on a single SD card and run them on an NES or Famicom.
In addition to NES ROMs, the Everdrive N8 is able to play FDS disk images.
Famicom expansion audio is supported, and on the NES version is output on the EXP 6 expansion pin on the cartridge connector as used by the PowerPak. A simple modification to the NES allows the expansion audio to be mixed with its output.
Specifications:
- PRG size: 512 KB
- CHR size: 512 KB
NES product: https://krikzz.com/store/home/31-everdrive-n8-nes.html
Famicom product: https://krikzz.com/store/home/32-everdrive-n8-famicom.html
See also: PowerPak - A similar product by RetroUSB
Mapper compatibility
As of the OS update v1.20 in 2019, the Everdrive N8 supports the following mappers: [1]
Known problems:
- Mapper 5 (MMC5) does not support Extended RAM modes.
- Mapper 24 & 26's expansion audio is less than accurate. Slamy made a custom mapper that improves the volume levels and adds mixing options, Download: here. Thread: [2]
- Mapper 69 (FME-7) does not support expansion audio. Necronomfive made a custom mapper that supports expansion audio, Download: here. BBS Thread: [3]
- Mapper 71 only supports the memory controller used by FireHawk, all other Mapper 71 games must be reassigned to Mapper 2 to work correctly.
- Mapper 85 (VRC7) does not support expansion audio. Necronomfive made a custom mapper that supports expansion audio, Download: here. BBS Thread: [4]
Other Mappers
A few mappers have been created by others to supplement the Everdrive's provided set.
- UNROM 512 (030): forum post (lacks flash save)
- GTROM (iNES Mapper 111): forum post (lacks flash save)
Software development limitations
Aside from mapper incompatibility, there are minor differences between running NES programs on the Everdrive versus a traditional single-game cartridge.
- The Everdrive does not accurately simulate power-on state. Because power-on always boots the Everdrive menu, RAM and various registers will be initialized to a consistent state before any NES ROM is chosen to run. (Reset state, however, is not affected by this problem.)
- Open bus behavior may be different in several memory regions that are used by the Everdrive, but would not be connected on a regular cartridge. (forum post)
- The Everdrive is incompatible with an NES that has the CopyNES modification installed, due to a bus conflict with its boot code.
Everdrive development resources
- Software tools and example mapper source code: http://krikzz.com/pub/support/everdrive-n8/original-series/development/
