OS v8

[KRIKzz]

http://krikzz.com/pub/support/everdrive-md/os-bin/

OS v8 available!
1)CD bios loading (only in tandem with firmware v8+)
2)region patch. it is megakey alternate. remove regional security, but work not for all games.
3)autorun. just flashed game autorun
4)more fast flashing algorithm
5)fixed bug with folder overflow
6)os update available now as buid in function
7)can run game and stay everdrive registers unlocked. good for homebrew. for activete just need replace string in rom header "SEGA MEGA DRIVE" by "SEGA EVERDRIVE"

[Eke]

Nice, i was just going to ask for an "autorun" function.

Do you think it would be possible to bypass the BIOS on later models after loading a new game ( instead of doing a cold reset, initialize stuff like the BIOS do then do a warm reset or directly jump to entry point) ?

[KRIKzz]

can't understand you question. you mean return to menu after reset?

[Eke]

Nope, I mean when I load a new game then start it from the menu, you are doing a system reset (MRESET ?) which have the effect of restarting the BIOS routine (boring license message, ROM header checks, TMSS register lockout, etc) before the game starts.

I would like an option that directly start the game without doing the whole reset process, pretty much like the BIOS is doing but without annoying message and protection stuff. There are also a few homebrew programs that were badly coded and won't work properly on systems with TMSS because they don't write the "SEGA" word on startup, it would help making them run on my setup...

[KRIKzz]

just dissamle hard reset in options and game will be started by jump on reset vector. but keep in mind that some game(sonic and sonic2 for example) will work with bugs withoud cold reset because i don't know how i can totaly clean hardware.

btw may be somebody know how genny hardware can be returned in default state by software method?

[BM-Viper]

KRIKzz,

So can OS v8 be installed on any firmware version? Also, why are the ByteBlaster's so expensive?! $100 for a parallel port version!

[KRIKzz]

KRIKzz,

So can OS v8 be installed on any firmware version? Also, why are the ByteBlaster's so expensive?! $100 for a parallel port version!

OS v8 can be installed on cart with any firmware.
100 USD? seems like you found some crazy seller (:

here byteblaster for 17usd:
http://cgi.ebay.com/new-Altera-ByteBlaster-Byte-Blaster-MV-Download-cable-/140402388390?cmd=ViewItem&pt=LH_DefaultDomain_0&hash=item20b0a26da6#ht_500wt_1154

[BM-Viper]

I just looked on Altera's website, hadn't gotten to eBay just yet :P I didn't wanna blow it up with a possible clone if the official one was cheap enough.

[KRIKzz]

official altera devices is extremely expensive. this is very simple device, so in this case clone 100% identical

[Eke]

just dissamle hard reset in options and game will be started by jump on reset vector. but keep in mind that some game(sonic and sonic2 for example) will work with bugs withoud cold reset because i don't know how i can totaly clean hardware.

oh thanks, didn't know it was already there, I should have looked better.


btw may be somebody know how genny hardware can be returned in default state by software method?

Tmee (on spritesmind forums) disassembled and analysed the BIOS program:
http://gendev.spritesmind.net/forum/viewtopic.php?t=451 (http://www.hot.ee/tmeeco/DWNLOADS/TMSS.RAR)

IMO, you can dismiss the write in the TMSS register ($A14000) at the end that lock the VDP unless the game rewrite the register with the good value

[BM-Viper]

official altera devices is extremely expensive. this is very simple device, so in this case clone 100% identical

Cool, maybe I'll pick one up, and try not to break my cart :-)

[Greg2600]

But the cable on Ebay is just the cable. It doesn't include the piece you have to solder into the card, right?

[KRIKzz]

right. it is BH-10R connector. and this connector not need to solder, just need keep by fingers on pcb

[mdmx]

right. it is BH-10R connector. and this connector not need to solder, just need keep by fingers on pcb

Hi KRIKzz, how do I have to install the BH-10R connector? Is this correct:

http://img441.imageshack.us/img441/7821/everdrivepin.jpg (http://img441.imageshack.us/i/everdrivepin.jpg/)

[KRIKzz]

correct

[mdmx]

ok, thank you. Where can I download the software for the Byte Blaster cable?

[KRIKzz]

i use "Quartus II Web Edition" for flashing. may be somewhere exist some small tolls, but i don't know about them

http://www.altera.com/products/software/quartus-ii/web-edition/qts-we-index.html

[raylyd]

i used my sd card to update to v9
and its fine

[mdmx]

i use "Quartus II Web Edition" for flashing. may be somewhere exist some small tolls, but i don't know about them

http://www.altera.com/products/software/quartus-ii/web-edition/qts-we-index.html

wow, this software has a file size of 2.6 Gigabytes:drool: I don't want to develop a new design, I just want to flash the new firmware.

Can I do it with the Altera Stand-Alone Programmer ?
https://www.altera.com/download/legacy/asap2/dnl-asap2.jsp

[KRIKzz]

i try it and this tool not works.
i will try to find some usable tool

[link83]

Maybe the "Quartus II Programmer" would be more suitable?:-
https://www.altera.com/download/programming/quartus2/pq2-index.jsp

[raylyd]

i will make a youtube video how to update via sd card take care guys i will do it soon as i can

[KRIKzz]

we talking about firmware update (not OS)

[mdmx]

i try it and this tool not works.
i will try to find some usable tool

Hi,
that's very nice. A small and easy to use tool would be helpful.

[Cyantist]

I have just one question about the Everdrive. Does it go in any Mega Drive? for example i wont need to mod one ?

[KRIKzz]

everdrive will be work on any original megadrive/genesis except genesis3

[raylyd]

Can i ask why wont it work in a genesis 3 ?

[KRIKzz]

i think that some signals is unconnected to cart port on genesis3 (cpu clock or/and !time).
BTW: currently i create new firmware for provide compatibility with genesis3 and firecore clones

[Eke]

Some suggestions for next OS:

(1) having an option to force the game mode (SMS, SMD) for unlicensed programs that do not have correct "SEGA" or "TMS SEGA" string in ROM header.

(2) having an option so that OS does not initialize / reset Z80 (RAM, registers,...) on startup: this is essentially for testing purpose, to see the initial state of Z80 on various models using a dedicated test program.

(3) when Z80 initialization is enabled, initialize SP register to $DFF0: this is indeed required by some SMS games that expect this register to be initialized by SMS BIOS.

Thank you

[KRIKzz]

i think than i can implement all it in new OS. hope that SP register init can help for some SMS games like "addams famely"

[KRIKzz]

only firmware (non os) may provide support with genesis3 and firecore

[KRIKzz]

latest firmware still not supported with genesis3, so you even can't run megadrive games on genesis3.
about genesis3 and sms: as far as i know genesis3 incompatible with SMS mode, even if you will use official power base converter. some hardware modiffication need for enable compatibility with sms mode on genesis3

[eightbit]

Will this work for flashing?

http://cgi.ebay.com/ByteBlaster-II-CPLD-Byte-Blaster-FPGA-JTAG-CABLE-/320541019482?pt=LH_DefaultDomain_0&hash=item4aa1bbcd5a

[KRIKzz]

yes, it will work
also you need BH-10R plug, like this (http://www.brownbear.ru/foto/foto/90031.jpg)

[scottzane]

New OS update http://krikzz.com/pub/support/everdrive-md/os-bin/os-v13.bin
v13 06.09.2010 1)spansion memory support 2)about menu 3)module menu moved in toolbox

[rat_king]

Hello,

In order to get a Model 3 VA2 (ASIC 315-6123) to work with the Everdrive you have to do the Virtual Racing fix.

-Bridge pins B16 and B26 on the cartridge slot
-Solder pin B19 to the side of solder spot C42 closest to the ASIC