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Old January 16, 2010, 08:24 AM
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This is going to be the official thread where i'll try to update it with everything that i've done, however i do not have a digital camera so i may only be able to borrow someone's at different steps through the progress rather then every single step.

Now you might be asking me what exactly i am doing and why i'm doing this. I'm doing this as i've rarely if at all seen someone mod a sega genesis case to hold a pc of any size (typically its just the NES case) so i wanted to try something new and interesting. That being said i am doing this as well since i would like a little emulator system + home theatre pc. What i am doing is gutting a sega genesis (aka just using the case), modifying the back and internals of the case to support/hold an itx motherboard/system.

I also will be throwing in some circuitry that will allow me to keep the authentic looking db9 slots at the front of the sega genesis, hook up the sega genesis controls, and use them as real controllers on the pc. I am doing this by using a micro-controller that converts the sega genesis control db9 signals into a HID through usb so the computer will recognize it (and auto-detect).

What i have so far:
I have a 40GB SATA hdd that will be mounted hopefully in one of those extra long sega genesis cartridges with the yellow tabs (the ones EA typically used)
2x1 GB of RAM, which about 256MB is being dedicated to the graphics card since its onboard.
Zotac IONITX-A-U Mini-ITX Ion Motherboard which is running the N330 atom dual core processor with hyper threading at 1.6Ghz, 9400M nvidia onboard grapics, hdmi out.
Gutted Sega Genesis Case.

What i have done so far: (and hope to get photos up sometime this weekened)
Gutted the Sega Genesis Case - this was rather easy as everything was just held on by screws, i got a kick out of seeing that the processor they used was an 68k.

Modified the back of the Sega Genesis case to be able to fit most of the peripherals that the ITX motherboard has. Unfortunately i dont have a lot of tools so this job doesn't look the greatest or prettiest but i may just paint over in the same black the sega genesis uses to hide the 'stress' spots on the plastic where i either broke them off with pliers or cut with a handsaw. Also its in the back and most people will be looking at the intact front part of the system for the most part anyways

Verified the system itself works. Took me a while and had to borrow a buddy's external dvdrom drive as i spent hours trying to get the system to recognize installing xp from flash drive but nothing would work. Luckily it would install from the dvd-rom drive and XP now boots on this little system.

Parts i am waiting on:
Sega Genesis to USB circuitry (Shipped Jan 18th). When this arrives i will be needing to solder the usb and db9 connections to the pcb board.

USB backplate. (Shipped Jan 18th) I am getting one of these so i have easy connectors to the motherboard. I will be snipping the wires at the point they go to the usb back plate and solder them onto the usb part of the conversion pcb board

Sega Genesis Big Cartridge. (Shipped Jan 18th) As mention before, this will house the 2.5" Sata hard drive to have the system look like there is actually a cartridge game in the system for more authenticity.

DB9 male header. (Shipped Jan 11th) I needed a second one because i only had one left over from a project i did in my college program last year or two and had it laying around.

Please bare with me as i took these with my somewhat old/crappy cell phone that only has 1.3Mega pixel with no zoom on it. With that said on with the show so far.


This is the Zotac ITX motherboard/cpu combo with the 2x1GB Ram installed, the 40GB hard drive that is being used and the optional heat sink fan on it. I would like to note this is on foam and on a book and NOT on the bed.


Here's the proof its not sitting on the bed and actually the foam and the book. The multi-coloured cables running away from it are case cables from an old case, i have power switch, power led, and hdd led.


Here are all the peripherals on the back, it ahs hdmi, vdi, vga, 6 USB ports, coax and spdif out, wireless network card and right below the antenna is where the dc adapter plugs in.


Here is the bottom half of the gutted sega genesis case. As you can see i used some pliers and wire cutters to remove some plastic pegs that would get in the way of me mounting the mobo the way i wanted. You can also see the outside of a gutted regular sega genesis cartridge.


Now here is the top half of the gutted sega genesis case, i will be re-using the power LED that came with it as the actual power led, i hopefully can get either the reset switch (since it is push button like) to work since the power switch probably wont since its not a pulse its an all the time on. As well i removed the sega genesis cartridge holder to give more clearance for the heatsink and fan on the mobo.


Here is the front part of the gutted sega genesis case. You can see that the original DB9 (serial port) connections are gone and that there is a little metal piece sitting in there. Its one of the 2 male DB9 heads that i will be mounting into the slots that will at one end hook up to a regular sega genesis controller with the other going to my now shipped sega genesis to usb adapter circuitry.


Here is the top view into the gutted sega genesis case.


Here is my lovely handy work with the tools and skills i currently have at my disposal. That was done all with either a hack saw, pliers or wire cutters. I know it looks a bit like crap but most people wont be looking at the rear of it and i may plaint the plastic strain to the black of the sega genesis if it really bothers me that much.


Here is the rear view with the motherboard placed inside of the case. Right now i have not set where the mounting screws to hold the mobo in place yet but the case does seal all the way around with the 4 remaining case screw locations.


Here it is running right now. The cables are running out of it because i haven't moved into the final step of mounting the push button under the reset button and rewire the power led into the sega genesis' power led slot. Also the hdd is sitting out of the case since it will be mounted in the big sega genesis cartridge whenever that thing arrives.

Comments, feedback, etc welcome!

Last edited by Arinoth; January 20, 2010 at 05:40 AM.
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Old January 16, 2010, 09:19 AM
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I was wondering when you'd be putting up the work-log. Looking forward to seeing how it turns out bud.
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Old January 16, 2010, 09:21 AM
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Quote:
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Old January 16, 2010, 10:49 AM
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Quote:
Originally Posted by Sagath View Post
I was wondering when you'd be putting up the work-log. Looking forward to seeing how it turns out bud.
I was waiting for a good deal on a zotac itx board and there was one last week so i snagged it while trying to get the other little parts ordered that are shipped or supposedly shipped. Also, getting anything to my place that isn't through canada post is a pain in the ass since it doesn't go through the school mail system. This means purolator, dhl, ups, i all have to be home for to actually get the package, where if it goes through canada post it goes through the school, and eventually in my mailbox.
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Old January 16, 2010, 04:27 PM
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ill be shipping out the games and the usb adapter Monday. interesting what you are doing here. i would like to see lol
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Old January 16, 2010, 09:11 PM
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Well you'll be able to see more of the progress when i get those things from you!
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Old January 17, 2010, 08:36 AM
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curious, with the specs you have listed why on gods green earth would you put xp on it? I know for a fact that those specs would run win 7 flawlessly . Im basing that on the specs of my netbook which si running win 7 top notch. (atom 230,2gb of ram and an intel GMA graphics) It plays 720p video streams without so much as a hiccup.
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Old January 17, 2010, 08:42 AM
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I put xp on it since as a computer engineering student i am part of that msdnaa library and have already used the 2 copies of Windows 7 that i get (one 32 bit on g/f's pc, one 64 bit on my pc) and well i also get 2 copies of vista and xp. So am went with xp for the fact the OS is legal and free to me.
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Old January 17, 2010, 05:58 PM
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Ah I see, was just curious as I found win xp to be the scourge of operating systems lol. I am quite interested to see pictures of this mod as I was contemplating it a few years ago before ITX boards were readily available.
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Old January 18, 2010, 01:09 PM
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It is so sad that you can't take better pictures. It looks great, but I would like to see more clearly the back of the unit.

great job there!!
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