OS v8

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"

 

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) ?

 

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

 

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...

 

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?

 

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-Byte...ultDomain_0&hash=item20b0a26da6#ht_500wt_1154

 

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

 

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

 

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

Tmee (on spritesmind forums) disassembled and analysed the BIOS program:
http://gendev.spritesmind.net/forum/viewtopic.php?t=451

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

 

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

 

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

 

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:

 

correct

 

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

 

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

 

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

 

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

 

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