I need some help on how to set up a Naomi 1 with gd-rom drive and dimm for use in my working HOTD2 . I know it can be done and have found the information on what hardware is needed but the actual installation process is confusing me. I have the GD -rom drive with disk and security chip. I know that the drive connects to the dimm via the scsi cable. I know the dimm plugs into the Naomi 1. I have a Gd rom jvs power splitter cable that will power the gd rom. I was told to unplug the 8 pin molex on the back of the filter board on the existing HOTD2 and connect the splitter there that would power the drive and the other end would plug into the new Naomi 1 ? Not sure if that is correct.There would be no power going to the HOTD2 then? I was told after hooking everything up like this I have to remove the rom board from the HOTD2 leave it out and swap the boot rom bios. with a 21577E. Sorry for the newbie questions I have never worked with any Naomi stuff be fore. All of my arcade games are the old vector games which I can work on. I have the disks and keys for confidential mission and maze of the kings just so you know what games I am working with. Thanks for any help
I need some Help with a Naomi set up
- Thread starter 2Vizslas
- Start date
skusuma
Professional
I have HOTD2 but it's only using game cartridge (rom board), not gdrom disk so I only needed to connect my power supply to the naomi and usb cable from naomi to jvs io board.
See link at thread below how to wire naomi:
See link at thread below how to wire naomi:
Axun JVS/JAMMA Supergun for the win!!!
we even make an adapter to power the RASP pi on netdimm multi
look at before after pics
we even make an adapter to power the RASP pi on netdimm multi
look at before after pics
skusuma
Professional
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Swirl
Enthusiast
Today I was planning to fire up the NAOMI + GD-ROM setup and came across this thread. I decided to take several pictures on how I typically get my personal setup up and running. I hope this is helpful to you (and others) in some way. The formatting might be kind of odd, but I'll try to structure it step by step. If there needs to be corrections on the technical side, please let me know.
1.) If you look on the NAOMI filter board, there's the eight pin. If you have the OEM splitter, it should be consist of three parts: Male 8pin, Female 8pin, Female 7pin.
2.) You're gonna plug in the Male 8pin into the NAOMI filter board and now you should be left with the Female 8pin and Female 7pin.
3.) Assuming you have a Sun PSU or whatever is considered stock/part of the NAOMI setup, you should have like a Male 8Pin and Male 6Pin.
4.) From your PSU, you're going to take that Male 8Pin then plug it into the Female 8Pin that's coming out of the splitter that we setup earlier. That's how the NAOMI motherboard is going to be powered and it'll split off giving power to the GD-ROM unit.
5.) Next you're gonna take that Female 7Pin from the splitter we set up earlier and then plug it directly into the GD-ROM unit. The Female 7Pin has that notch popping out where you can see it fits.
Alternative view:
6.) With the 8pin, 7pin taken care of, you're going to plug in your Male 6pin from the PSU into the Female 6pin on the filter board. From there you should have the power wires taken care of.
7.) The next steps, you're gonna plug your DIMM board into the motherboard, then put your GD-ROM where ever you think is best and plug up the SCSI cables. Doesn't really matter which end goes where, I guess whatever angle is the best for your setup.
The end result:
If you have a multimeter or some sort of voltage reader, make sure you have your 3.3V set to somewhere around 3.34V, maybe at most 3.40V and 5V set to 5.00~5.05V but no higher than 5.10V. This is what I have it set to and boots without any issues but your mileage may vary.
I'm unable to upload more than ten photos at a time, but this is pretty much a rundown of how I typically plug up my NAOMI with DIMM + GD-ROM. I initially watched this video to get a rough idea of what I was supposed to do, but it felt better to just have the setup in front of me and go from there.
Again I apologize if the formatting is kind of all over the place, I haven't put together a post like this since the Twinkle Star Sprites trainer thread.
The HoTD2 assembly (afaik and please correct me if I'm wrong) is just a NAOMI 1 in a metal cage with an earlier BIOS revision dedicated to HoTD2. According to this website, your best bet is to get a Revision H BIOS EPROM burned for GD-ROM compatibility. I believe that's the latest/final revision and that's what I typically use for GD-ROM stuff nowadays.
1.) If you look on the NAOMI filter board, there's the eight pin. If you have the OEM splitter, it should be consist of three parts: Male 8pin, Female 8pin, Female 7pin.
2.) You're gonna plug in the Male 8pin into the NAOMI filter board and now you should be left with the Female 8pin and Female 7pin.
3.) Assuming you have a Sun PSU or whatever is considered stock/part of the NAOMI setup, you should have like a Male 8Pin and Male 6Pin.
4.) From your PSU, you're going to take that Male 8Pin then plug it into the Female 8Pin that's coming out of the splitter that we setup earlier. That's how the NAOMI motherboard is going to be powered and it'll split off giving power to the GD-ROM unit.
5.) Next you're gonna take that Female 7Pin from the splitter we set up earlier and then plug it directly into the GD-ROM unit. The Female 7Pin has that notch popping out where you can see it fits.
Alternative view:
6.) With the 8pin, 7pin taken care of, you're going to plug in your Male 6pin from the PSU into the Female 6pin on the filter board. From there you should have the power wires taken care of.
7.) The next steps, you're gonna plug your DIMM board into the motherboard, then put your GD-ROM where ever you think is best and plug up the SCSI cables. Doesn't really matter which end goes where, I guess whatever angle is the best for your setup.
The end result:
If you have a multimeter or some sort of voltage reader, make sure you have your 3.3V set to somewhere around 3.34V, maybe at most 3.40V and 5V set to 5.00~5.05V but no higher than 5.10V. This is what I have it set to and boots without any issues but your mileage may vary.
I'm unable to upload more than ten photos at a time, but this is pretty much a rundown of how I typically plug up my NAOMI with DIMM + GD-ROM. I initially watched this video to get a rough idea of what I was supposed to do, but it felt better to just have the setup in front of me and go from there.
Again I apologize if the formatting is kind of all over the place, I haven't put together a post like this since the Twinkle Star Sprites trainer thread.
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OK I understand on how you are hooking everything up but how does the Naomi 1 output to the HOTD2 cab? If I don't do anything to the HOTD2 Naomi won't both systems try to run at the same time? If the Naomi 1 is the same system as the HOTD2 but not in a cage why can't you just remove the cage and install the Naomi in its place? Plug all connections from the HOTD2 into the Naomi1 and use splitter to power the gd drive?
Swirl
Enthusiast
If you have a spare NAOMI 1 around, you should be able to install it in place of the HoTD2 boardset. So take that out, then plug in the connections into the NAOMI 1 and introduce the GD-ROM/DIMM set.
Video output is through a VGA cable.