MetalliC
Champion
Burn NAOMI games to CD-R and Play on GDROM Drive?
- Thread starter RealMFnG
- Start date
Finisterre
Professional
Oh indeed, which is why I wondered about the "which has less capacity than a GD-ROM when we have the CF solution" comment, it really needed not apply. Just like in the context, folks here saying things along the lines of "CD-Rs are dead, slow, unreliable and this is the reason SEGA made the CF solution", and posting pictures of CDRom wind catchers, they are being fairly subjective. At best it seems semi relevant to the technical conversation about what causes the time out, and misleading at worst. Oddly enough it sounds like the timeout was solved already in parallel work.
I can walk into Walmart right now and buy CD-R's if for some reason one of my original GDRoms failed. I have to go all over high hell to find a CF card, let alone a machine with the proper physical connection to support the ATA id foo, etc. , and I have to pay for a CF adapter if I don't already have one (many of my systems only have GDROM).
THIS part of the conversation is a wash, that is wonderful if you feel CDRs are outdated, lets not prop up our hats on CF cards. They are honestly just as dead if not more dead. Rigor Mortis has definitely set.
"That reset was patched in the CF version. I guess it can also be easily patched in the GDRom version, if the code that does the check is similar or jumps to similar positions for reset, etc", sounds like there isn't much else to discuss? It seems to come down to those of you that are in the know either choosing to share, vs not. regardless of if you've grown tired of it, or think CD-Rs are dead, etc.
I think my original post on this thread framed the status quo well... 43
"is available only for a circle of persons who himself was engaged or is engaged in research of Sega DIMM, which can be counted on the fingers of one hand. until Elsemi himself decides to make this hack public - no one else, myself included, will do it himself."
We can make excuses about CD-Rs or time limits being annoying, etc. the bottom line is someone doesn't want to share, and TBH isn't necessarily compelled to do so. (I want to make it clear I'm not chastising anyone over their choice to not share). Some of this conversation is pointless if those of you that hold this special sauce want to continue to keep it to yourselves.
The flip side is if you really are *done* with it and just don't *care*, and legit think CDRs are dead, how can their be any harm in sharing what you did previously?
J
jassin000
MetalliC
Champion
good for you. in my place literally impossible to buy good CD-Rs, but only crap which become unreadable in a days or week after write.
even in online stores it is not easy to find good enough CD-Rs these days, because it is "dead tech" for a long time already.
anyway, returning to capacity question - Trofirce/Chihiro GDs usually contain two game binaries, for 1GB DIMMs and for less than 1GB DIMMs.
Naomi GD games contain single binary, except for VF4FT
J
jassin000
This all day! The best CD-R I've ever used is the original Verbatim (blue) AZO's.
That is the new package above, which is good but I swear the OG's were better (original disc was a deeper shade of blue).
let's admit it. CD-R is a dead technology. If I could choose I would prefer something SD based..And if I could choose More, I'd like a device that replaces the DIMM with newer, less power demanding pcb.
This is the future
Finisterre
Professional
@rtw Was @werejag correct? what signals are you speaking of?
did you look further into this?
Working on a GDrom emulation device for Naomi wouldn't be cloning GZDEMU work IMHO? It is a different use case. It seems many folks were working to get this stuff hammered out in the long run. I'm not sure of the pedigree or functionality of iceGDROM, but one could perhaps use it as a basis? https://github.com/zeldin/iceGDROM (started one year after GDEmu began)
GDEmu was started around July 14th, 2014 per https://gdemu.wordpress.com/2014/07/14/in-other-news/
"To that end I’ve already purchased DE1-SoC kit from Terasic/Altera"
September 24, 2013 'New Homebrew Device “DCIO” Replaces Sega Dreamcast GD-ROM With SD Cards, Hard Drives' per http://www.retrogamenetwork.com/201...a-dreamcast-gd-rom-with-sd-cards-hard-drives/
"The new creation, which being done by cybdyn from the Assembler Games forums, is called “DCIO”. The way that the DCIO operates, is that instead of starting up and playing your games with the discs themselves, this device will replace the GD-ROM drive, and will emulate the booting process."
Seems at least three people were working at this technology in the past pretty well learning from each other, and the community? http://www.sega-16.com/forum/showth...D-Serial-Board&p=657049&viewfull=1#post657049
"There's a thread on assembler about DCIO. I looked at it a few days ago and it seems they are now thinking of quiting DCIO because deunan decided to produce his product after saying it would not happen. OzOnE on assembler is the person working on DCIO with cybdyn, he was worried about how much the product will cost and if people will be interested etc. He said they hope for it to be around $120 but nothing is final. Personally, I hope DCIO comes out because what they are developing in terms of software and features seems better than the one in the video.
There is also a third guy working on a board, he was posting his progress in the assembler thread as well."
There are some fun retro threads on the subject for sure.
https://mamedev.emulab.it/kale/2013/08/19/the-swirl-legacy/#comment-18406
"Most important status flags on GD-Rom are DRDY, BSY and DRQ, and I don’t think you need an explaination of what does what since that the manual already explains it well. “SAMTAG” (-> sense, register 0x8c) is also mandatory to make them to boot"
Sooooooo is this something we can openly discuss without feigning disgust?
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@mathieulh feel free to continue here your research: Naomi Net DIMM CD-R firmware hack for 4.02
hoagtech
Enlightened
All these storage devices sound lacking for the number of titles supported for Naomi.
I would prefer An SSD drive
I would prefer An SSD drive
Thanks, I just posted a link to the current modified firmwares here: Naomi Net DIMM CD-R firmware hack for 4.02