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I didn't say it WOULDN'T fit, just that I didn't have access to a cocktail machine to verify it would fit. Clearly where there's a will there's a way! @garyaa Nice job!

It's awesome having 5 bosses, lol. In reality one of the main purposes of these "parties" is to teach people how to repair their games themselves so there's lots of watching and hopefully LEARNING going on.

No discord as far as I know but I believe @Arcadenut and @BigDogs connect with some on Facebook.

Yes, I just got home from today’s (yesterday’s) event. We typically do them once or twice a month. We just posted pics from this event a couple of posts back. Fixed a Pole Position II with graphics issues, got a couple monitors repaired and brought a “Quasar” back to life.

If you open the info.mac file it describes what all these files are. They are not a “core” or anything related to FPGA code. Scanning through them quickly they look to be either original source files or disassembled object files for the original game. They include dumps of the ROMs and PROMs on...

Not all of them. Exidy's color games Star Fire and Fire One used a very unique method of separate memory spaces for the luma (intensity on or off) and chroma (color). The really interesting part is the color resolution was lower than the BW resolution so adjacent pixels had to be the same color...

Unfortunately the awesome AR2 design is not quite 100% efficient. Probably losing 20% or more in the transformer then another > 50% since the 5V is pass regulated from a 10.3V raw supply. This is not even counting rectifier losses wiring losses etc.

So I can't buy one of your 6502s? Maybe check on @HudsonArcade ‘s coffee table?

So you want me to believe this “customer” of yours had one of Scott’s Tempest multi FPGA kits plugged into his Omega Race cab with an “original spinner” and he “replaced” it with one of your Omega Race multi software emulation boards? Sounds reasonable. 🤣

There’s an Omega Race FPGA? Where can I get one? I’ll take one of your 6502s also!

Until you can get a good picture of PO/SPO that shows the detail of the individual red green and blue sub pixels will you begin to understand the difference you are “seeing”

There’s some camera focus issues going on here, perhaps related to the tinted glass changing the focal point of the camera or possibly the distance from the camera to the screen, was one of these pics cropped way more than the other? You can clearly see the RGB phosphor pixels in the left...

As much as I hate to validate anything ChatGPT comes up with, everything it came up with is accurate descriptions of why a video signal would look "sharper" vs "more smooth". Unfortunately most if not all if it doesn't apply to the Nintendo hardware nor the 20EZ monitor. It did miss one detail...

@Dillweed what board is that and what IC location? I'd be curious to see what 2 pins of what IC in what circuit those are.

That was my first thought as well but I haven't seen any used in the arcade industry up to this point. There's not really anything needing that level of precision. I think it might've been some kind of inside joke between the engineers or possibly a "copy detection" scheme. Whatever it was/is...

They would've had to do that anyways to keep the picture size the same with double the feedback voltage. I assumed there was a second part of this mod that changed other resistor values to double the forward path voltage as well. I don't think this was a "field update" I think it was a factory...

I think they may have been trying to improve the signal to noise ratio on the feedback signal or maybe they were trying to lower the power/heat vs volume as you posted originally and they made the same mistake you did not realizing the power was doubling. Several in this thread made that same...

It actually IS used in a "current mode", see my post above. The current will remain the same and the power will double. My whole point in chiming in was to bring attention to the ASSUMPTIONS being made and the fact they might not be correct. Turns out my assumption was.

Ok fine, I looked at the schematic and it is indeed used in "current mode" vs "voltage mode". The two resistors are used as "current sense" resistors to measure the current in the deflection yoke for feedback into the deflection amplifier. In this case doubling the resistance will have minimal...

Yes, the "stockpile of 1.5 ohm resistors" is one possible scenario, and maybe the most likely. Your statement on power is only accurate if the resistor is being exposed to a "voltage" source. If it's in a constant current circuit then power doubles going from 1.5ohm to 3ohm meaning you either...