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¿Solved? F'n Naomi

Neodogg

Neodogg

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I know it's a picky SOB but jeebuz...
I was playing a game via CF and shut it down to swap out CF cards not touching the DIMM and I can't get it boot past the splash screen with the "Error 01" code. It's worked fine for years. Voltages are on point, 3.3 & 5. I've cleaned contacts on the mobo, DIMM & GD drive cable. Removed the DIMM and reseated it numerous times. I've pushed in the BIOS and Zero chip and that damn Error 01 message keeps taunting me... Is this a bad mobo or DIMM?
 
Do you still have a battery in your dimm? I thought my voltages were fine but it was actually dipping just enough during boot to give errors and only sometimes.
 
Sounds like that "Bad Load" issue with CF cards sometimes. When you see the boot taking a bit longer to load while in the Naomi's white boot-up screen, pull the power cable on the CF reader then reinserting it, essentially just rebooting the reader to try to load it again.

Now-a-days I have the CF reader from @Tailsnic Retroworks that has a relay switch and a small Arduino that resets the CF Reader automatically when a bad load occurs. Sometimes it'll reset a couple times before a good load happens.
 
notsonic said:
Do you still have a battery in your dimm? I thought my voltages were fine but it was actually dipping just enough during boot to give errors and only sometimes.
Click to expand...
there is a battery and it doesn’t seem to have any juice.

opt2not said:
Sounds like that "Bad Load" issue with CF cards sometimes. When you see the boot taking a bit longer to load while in the Naomi's white boot-up screen, pull the power cable on the CF reader then reinserting it, essentially just rebooting the reader to try to load it again.

Now-a-days I have the CF reader from @Tailsnic Retroworks that has a relay switch and a small Arduino that resets the CF Reader automatically when a bad load occurs. Sometimes it'll reset a couple times before a good load happens.
Click to expand...
I tried the power trick and didn’t change anything.

I’m leaning towards the DIMM croaked? I moved the jumpers around to try and NetBoot but I still get the message and when I go into the test menu I don’t see network settings option.

I used to NetBoot then I got a CF set up and now seems like neither are working…
 
Is there a Naomi CF multi (or similar) that's available? I know there the NetDimm with RPi option, but was wondering if there was something similar that uses the regular Dimm board
 
@opt2not @neSneSgB
Thanks for the ideas and offers. I went digging through some old PMs with @skate323k137 because I remembered having some issues initially when he helped me start Netbooting back in ol’ 2023. I found one saying I had to bump the juice up to 5.12 to get it to work….well…once I did that on the SUN it boots and loads CF games again!

I know the Naomi is finicky but…come on. I also disconnected the DIMM battery for giggles @notsonic per suggestion.

Thanks all for the suggestions, seems like 0.12v can keep a Dogg down…
 
Hopefully running it that high doesn't eventually fry out your buffers. 5.12v should be within the tolerance, I think...
But there's definitely something going on with it, for it wanting more juice.
 
opt2not said:
Hopefully running it that high doesn't eventually fry out your buffers. 5.12v should be within the tolerance, I think...
But there's definitely something going on with it, for it wanting more juice.
Click to expand...
Maybe, I can see what the lowest is that’ll boot. Are the buffers on the mobo or NetDimm?
 
Neodogg said:
@opt2not @neSneSgB @notsonic
I noticed that my vga cord was getting really hot? Maybe I need to try a more insulated cord? I assume it runs a small amount of voltage for signal?
Click to expand...
You need to either cut pin 9 on the VGA cable or use one with it disconnected, that might be why you're running into voltage issues, as that pin is connected to 5v on the NAOMI, and GND on your chassis (or vice versa), shorting the two rails together.
 
This! ^
Yeah that could definitely be the issue with the voltage drop.

Are you using some aftermarket VGA cables? Not the sega ones with the metal connectors case?
 
neSneSgB said:
You need to either cut pin 9 on the VGA cable or use one with it disconnected, that might be why you're running into voltage issues, as that pin is connected to 5v on the NAOMI, and GND on your chassis (or vice versa), shorting the two rails together.
Click to expand...
Now that I think of it…another variable that changed was the monitor. Before I was using my 19” LCD that I could flip but then I brought out my WG9400 which is a lot bigger…then it wouldn’t boot until I increased the 5v…may hook the LCD back up and see if it boots at the 5.0v…
 
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Neodogg said:
I don’t have any fancy VGA cables…
Click to expand...
word. it's not necessary if you clip that pin 9 off or are using a VGA cable without that pin populated.

Neodogg said:
Now that I think of it…another variable that changed was the monitor. Before I was using my 19” LCD that I could flip but then I brought out my WG9400 which is a lot bigger…then it wouldn’t boot until I increased the 5v…my hood the LCD back up and see if it boots at the 5.0v…
Click to expand...
It's possible that your LCD monitor terminates that 9th pin, while the WG9400 might be tying that pin to GND.
 
This is a pic of the beige SEGA VGA cable for reference, you should be able to turn the voltage back down if you snip that pin out on one or both sides.
 

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