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Everdrive N8 Firmware (OS)

[   ] nesos-v1.10.zip 2016-01-17 11:29


[   ] nesos-v1.11.zip 2016-01-17 11:29


[   ] nesos-v1.12.zip 2016-01-17 11:29


[   ] nesos-v1.13.zip 2016-01-17 11:29


[   ] nesos-v1.14.zip 2016-10-28 21:05


[   ] nesos-v1.15.zip 2016-11-12 15:46


[   ] nesos-v1.16.zip 2017-07-04 10:38


[   ] nesos-v1.20.zip 2019-12-23 19:42


[   ] nesos-v1.21.zip 2020-01-08 16:25


[   ] nesos-v1.22.zip 2020-01-09 01:10


[   ] nesos-v1.23.zip 2020-01-10 17:38


[   ] nesos-v1.24.zip 2020-10-27 01:17


[   ] nesos-v1.25.zip 2020-12-27 13:48


[   ] nesos-v1.26.zip 2021-04-04 12:10



nesos-v1.26 04.04.2021
1) fix for black screen after reset

nesos-v1.25 27.12.2020
1) included YM2413 core update from Necronomfive
2) minor fixes for MMC3

nesos-v1.24 27.10.2020
1) fixes for MMC5
2) fixes for FDS

nesos-v1.23 10.01.2020
1) new mapper 111
2) fixes for mapper 99

nesos-v1.22 09.01.2020
1) fixes for mapper 1

nesos-v1.21 08.01.2020
1) Fixed mapper 4 and some other bugs

nesos-v1.20 23.12.2019
1) OS naming convention was changed to make clear differentiation between PRO and OG N8 OS. OG N8 OS is 1.xx and PRO is 2.xx
2) Now save states supported by all mappers.
3) New fully functional MMC5 mapper
4) New FDS audio core
5) Audio core for Sunsof5 mapper by Necronomfive
6) Audio core for VRC7 mapper by Necronomfive
7) Specific games databese update. Now works few more games which require specific settings
8) Minor update from MMC3
9) New mappers support(1): 27, 30, 50, 106, 108, 142, 144, 145, 149, 156, 165, 171, 175, 176, 183, 213, 216,
9) New mappers support(2): 222, 252, 37, 45, 49, 51, 52, 105, 177, 190, 197, 207, 214, 228, 229, 244, 249, 250,
9) New mappers support(3): 35, 44, 56, 60, 103, 117, 132, 136, 143, 159, 172, 173, 183, 186, 187, 198, 199, 221, 238, 248
10) FDS autoswap blocking function. Hold A to prevent disk swap. This is mostly for test fds sound in zelda intro.
11) Fixed irq counter in Acclaim mmc3 mapper
12) Audio balance option for mappers with expansion audio
13) Some mappers and fixes were back ported from N8-PRO


nesos-v16 04.07.2017
1) white artifacts fix
2) MMC3 irq improvement

nesos-v15 12.11.2016
1)Minor bugfix


nesos-v14 28.10.2016
1)Fixed MMC4 (glitches in Fire Emblem)
2)New mappers support. 31, 137, 138, 139, 141, 147, 168
3)Removed "audio mix vol" option. Now it always in "Hi" state
4)Removed "Mapper info" menu due the lack of memory space
5)Minor bugfix

nesos-v13 27.09.2015
1) Compatibility with Hi-Def NES HDMI Adapter

nesos-v12 20.09.2015
1) Mapper 85 partial support (without expansion audio)
2) New mappers support 227, 90, 211, 202, 234, 85, 146, 150, 164, 196, 148
3) Fixed Low G Man mapper (Forced 0xff at open bus)
4) Fixed FME-7 IRQ and allow bank switching for RAM (32 Kbyte)
5) Fixed save state for mapper 21
6) MMC3 improvements

nesos-v11.1 07.09.2014
1) fixed mapper 19

nesos-v11 05.07.2014
1) Fixed save state bug

nesos-v10 04.07.2014
1) Seven more mappers with save state support.
2) FDS sound improvement.
3) Option for A/B button functions swap (for menu).
4) File browser remember and returns to last position after reset, instead of go to root.
5) Minor bugfix.
6) No "SRAM backup" options anymore, cart always backup saves.

nesos-v9.1 16.04.2014
1)512K PRG for mapper 34
2)512K PRG for mapper 2

nesos-v9 11.01.2013
1)Improved save state stability
2)Expansion joypad should work for save states, but not tested.
3)New mappers
4)More mappers with save state support
5)Partial MMC5 support. Seems like enough for castlevania

nesos-v8 04.11.2013
1)Save states supports. Mappers with Save State function listed in blue fields: http://krikzz.com/pub/support/everdrive-n8/mappers.png
Some games may not work propertly with Save State function, they may hang when trying save or load state
Default joypad configuration: Down+start - save state, up+start - load state. Hot key configuration can be changed in options.
Save state function may not work with clones!

nesos-v7 14.08.2013
1)sram initialization with zero. Should fix some games
2)MMC1 registers initialization

nesos-v6 12.07.2013
1) Fixed GameGenie bug
2) Important improvements for MMC3 mapper
3) Fixed problems with mapper 32
4) Improved global compatibility

nesos-v5 07.07.2013
1)allow to load short gamegenise cheats from text file. Short code should be written in XXX-XXX format, long in XXXX-XXXX format
2)MMC3 improvements

nesos-v4 04.07.2013
1)mmc3 mapper was improved
2)New mappers implemented: 40, 133, 99, 151
3)OS allow to load gg cheats from text file. Cheats should be written in XXXX-XXXX format. Few codes can be listed in column, or separated by comma in the line
4)Apu initialization before than run the game
5)Naming convention is changed. From now name contains only OS version, without mappers version

nesos-s3m5 11.04.2013
1)fixed problems with sound and sprites flikering in Startropics
2)Supports menu navigation with expansion controller
3)Implemented mapper 28 (INL-ROM Multi-discrete)
4)Mapper 158 support

nesos-s2m4 11.03.2013
1)MMC6 ram implementation
2)Four screen mirroring for MMC3

nesos-s2m3 24.02.2013
1)VRC6 sound improved
2)FDS improvements. IRQ and sound levels

s2m2 20.02.2013
1) few more mappers
2) OS should looks properly with RGB PPU
3) minor bugfix