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Bacteria's Project "Unity" (aka Alpha Omega project)

PostPosted: December 21st, 2011, 12:33 pm
by Bacteria
I've condensed this thread but kept the main videos on here.

The project is a large, and unique projects to those that don't know - one base unit, around 20 unique console boards with original hardware (some cartridge some disc), all using one power supply, one video output (SCART), one controller; for all systems. No-one has made a system larger (that i've seen) more than 6 systems, and they all use different controllers depending on the system being played, not one-for-all (which is what makes my project unique on the net).

Systems that will be implemented:

Done

Sega SMS - done, not added into system yet
Nintendo NES - done, not added into system yet
Mattel Intellivision
Nintendo GameCube (and GBA via GBA Player)
Amiga CD32
Philips CD-i
Playstation 2 (also plays Playstation 1 games)

Doing:

SNK NeoGeo
Sega MegaDrive
Amstrad GX4000
Nintendo 64
Sega Saturn
Sega DreamCast
ColecoVision
Nintendo SNES
NEC TurboGrafx/PC Engine
Atari 7800 (also plays Atari 2600 games)
Atari Jaguar


So, project so far....

Re: Bacteria's Alpha Omega project

PostPosted: December 21st, 2011, 12:34 pm
by Bacteria
Sega Master System 2

(put RGB pinout in the reference section)



Re: Bacteria's Alpha Omega project

PostPosted: December 21st, 2011, 1:04 pm
by Bacteria
Nintendo

Here's the NES video. It covers the following aspects:

Opening a PAL NES "toaster" console
Removing the parts
Parts needed / not needed
Removal of the A/V and AC power daughterboard
Composite and audio modding
Fixing the cartridge port to play games reliably again
Region free modding to play NTSC games as well as PAL
Board reduction
Demonstration


Re: Bacteria's Alpha Omega project

PostPosted: December 21st, 2011, 10:58 pm
by Bacteria
On the Intellivision part, you can see the motherboard, daughterboard, diodes for the controller controls, and initial testing tact buttons.

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Re: Bacteria's Alpha Omega project

PostPosted: December 21st, 2011, 11:01 pm
by Bacteria
The GameCube was wired up with GBA Player add-on:

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It shows the GameCube, the GameBoy Advance Player, a quick taster of the master controller and also showing the master controller working fully.


Re: Bacteria's Alpha Omega project

PostPosted: December 21st, 2011, 11:09 pm
by Bacteria
The master controller uses an N64 game port with 2 extra pins added to make it 50 pins in total, the key areas are grounded to reduce interference. One controller for all systems, yes?

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Changed to the PlayStation plugs, however initially used a serial port for the 9 wires (8 plus ground)

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Re: Bacteria's Alpha Omega project

PostPosted: December 21st, 2011, 11:12 pm
by Bacteria
Voltages - using voltage regulators, just using one 12v transformer going into the system; the regulators are outputting 1.9v, 3.3v, 3.43v, 5v, 15v, -3v, -5v

For example, the N64 needs 12v/7.4v and 3.3v; the Intellivision needs 15v, 5v, -3v, 12v; the GameCube 1.9v, 3.43v, 12v; NES 5v, Amiga CD32 needs 5v and 12v; etc. Other systems need other voltages too, PS2 needs 8.5v (I believe), ColecoVision needs 12v, 5v, -5v; etc.

Added a couple more since this pic, but it's a good idea of what was needed:

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Re: Bacteria's Alpha Omega project

PostPosted: December 21st, 2011, 11:16 pm
by Bacteria
Amiga CD32



One big pain is that the drive door presses onto the CD holder wherely magnets keep the CD held in place; the central spindle is just a smooth "dome". This is a pain as they could have easily put in a normal CD plastic holder to have done the job; I guess they thought kids would prefer to throw the CD in the bay and close the door, rather than putting it in properly. I'm looking into modding this to be better for my purposes.

One other thing, as normal, the system works when the drive door is lowered, however there is no tact switch as per usual, or levers; no, this system has to be different there too - after lots of looking, saw a plastic piece on the middle of the console, the left side of the drive door; when lowered, it cuts the contact between two LED diodes (probably IR ones) - so just put a piece of card or whatever in the gap and the system thinks a disc is present - easy! Here is the gap - in the console, its to the left of the reset button:

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Here is a pic of the system, gutted, but working fine; just tested it.

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Going to make my own CD holder section rather than using the supplied one as it is an awkward shape.

Ok, made good progress on the CD top section - as you see in the pic, it is flush now with the GameCube one, and with the hole cut through for the GBA game cart too. There is about 3mm or so clearance for the Amiga drive unit.

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testing

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Re: Bacteria's Alpha Omega project

PostPosted: December 21st, 2011, 11:20 pm
by Bacteria
Coming along! Put the GameCube and Amiga CD32 together, as have to on this project:

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Re: Bacteria's Alpha Omega project

PostPosted: December 21st, 2011, 11:28 pm
by Bacteria
This was actually my second design, first one worked fine but didn't look good.

Used one of those Dreamcast controllers as a shell for the master controller - sleek, about the right shape; just had to make it wider and also flat at the top so everything was going to work and fit. The cartridge add-ons will be vacuum formed.

Used 2mm white Plasticard (Styrene as named in the USA) instead of usual clear plexiglass (perspex) as easier to work with. Hot glued the cut up controller to the Plasticard before filling.

The extra length to the casing will be to house the extra length the controllers need inside.

These are pics so far:

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Keypad in, etc

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