Atari-Forum

Regarding spinner type controls, I recently learned about the Arkanoid "vaus" controller for NES, which just uses a potentiometer, with ADC inside the controller to digitize the knob position for serial output. https://en.wikipedia.org/wiki/Arkanoid_Controller Just to be clear, I'm not asking for an...

Yeah, while I can see how Chip-8 would be "_Other", I would consider Arduboy as much of a Console as a GameBoy. If creating a new classification specifically for Arduboy, I would say "_Handheld" would make more sense, and other GB/GBC/GBA etc. could move there with it. Except it might be slight prob...

I am at a bit of a loss with the video chip in black widow. Not sure why it looks so bad. The original vector video has the letter bug in it. So I think it is in avg I've been looking at the code and starting to understand it (still new to HDL). I've found the source of the "letter bug", and the do...

I looked at black widow and noticed this also. I don't think it's a scaler thing. There are some letters(B and G iirc, maybe others) that end up offsetting all following letters. I think maybe the end position of the vectors has an off-by-one error that gets accumulated or something similar. Possibl...

I would really like to see some introduction of how the graphics pipeline works in MiSTer for new developers. Like a high level block diagram showing the path of data from core-native output through scan doubler, composite blending(i guess that's core-dependent), how OSD gets inserted, to ASCAL to H...

Question about the Audio Enable options. does the "Both" choice intentionally cut the volume (in half I presume?) to avoid clipping after mixing? Is there any way it could auto-detect if the ROM uses cart expansion audio and only attenuate+mix if it both that + internal can be used? I don't really k...

alanswx wrote:I think the mathbox is what we need next.

Does this help? https://github.com/zpekic/sys9080/tree/ ... 080/Am29XX

I'm fascinated by vector arcade games, and I know there are cores already for Asteroids, Asteroids Deluxe, and Lunar Lander. What would it take to get some of the other Atari vector arcades running, such as battlezone, tempest, red baron, star wars, etc.? I've been researching how the hardware worke...

OK, I've created a bunch of screenshot examples of my filters, in case anyone wants to see what they look like. Most of it is pretty boring and all on the same scene for consistency(somewhat at least, due to animated background :roll:), with pretty minor differences between most adjacent filter exam...

Here is a test core which helped during scaler development : http://temlib.org/pub/mister/AscalTest.rbf https://github.com/Grabulosaure/AscalTest_MiSTer This core can adjust input and output image sizes, select different patterns and filters. MiSTer internal screenshot function copies the image fed...

filters showing a lot of artifacts like 100% dark scalines at 1080p (4.822x scaling) I started thinking about banding type of issues like this, and how to predict what worst case visual artifacts would appear as. I determined that phase lookups will come in cycles of varying length depending on inp...

I'm pretty sure that the genesis core composite blending just does "output color = (current color + previous color)/2". So the first column has nothing to blend with. It would have to delay the video output by one pixel if is was going to blend the first and second pixels in a row to get the first ...

Well, I tried with the 1/32 offset to coefficient calculations, and I really can't tell any difference either way. Did you get a chance to test out any of my filters? Still curious if they would be considered better in any ways to what already exists, but I don't know if there's any more objective/s...

Something's been bothering me about the way the position of the phases is defined for our filters. The first row is phase 0 and corresponds to the center of tap T1. The ninth row is phase 8 and corresponds to the halfway point between T1 and T2 (so it's the pixel edge between T1 and T2). ... My issu...

OK, I've added code and generated filters for "Logistic Function" smoothing, and totally restructured the script into separate files, with more re-use. I also tried testing out and comparing filters with the 240p test suite on Genesis for a bit, but not really sure what to look for in terms of filte...

I realized shortly after posting my smoothstep filters that another, more flexible option could be to use the Logistic Function . Its more flexible in that "k" can tweaked continuously to vary the steepness or "transition width", up to around k=100, where it basically becomes a step function when sa...

I've just put the repo up here: https://github.com/thehans/MiSTer_Filters I spent some time trying to explain the overall ideas in the README, so I won't repeat it all here, but the two main types of filter I've been playing with so far are: "Bi-Smooth": interpolates between 2 taps (like bilinear), ...

Thanks for the reply. I had seen the wiki page and the Intel + ZipCores docs, but it took a few times of reading over before it sank in. I guess I was originally getting confused about the sinc/Lanczos explanation, thinking that was something inherent to how it mixed the phases. But now as I underst...

I am trying to understand this polyphase filter concept to maybe play with my own settings. I still don't entirely get it, but it seems similar in some ways to a convolutional filter, which I'm a little more familiar with. Is it possible to convert a convolutional filter into a polyphase representat...

Hello, just read through this thread out of curiosity. I don't have DE10-Standard nor do I plan to get one any time soon, but I wanted to point out some info in case anyone is still interested in the topic: Btw, there is no Altera/Intel documents saying what exactly this number means besides that 6 ...

I just learned about this device labeled as "Time Sleuth" that can be used to measure how much display latency is in your TV / monitor etc. https://www.retrorgb.com/time-sleuth-lag-tester-review.html It seems like overall pretty simple functionality, I am wondering if such a feature could be added t...

After reading back in this thread a little bit, I think its probably just more examples of the scanline interrupt issues that Mills already brought up at the top of this page.

I've found that the GBC game "Project S-11" has glitched graphics around the title screen and in some of in-game sprites. Not sure if this is a issue with the core itself, or could it be a bug due to the "sameboy" bios?

Ah, thank you! I guess I didn't realize there were different "pairing" modes even for non-bluetooth usage. I followed instruction from the manual this time for XInput: Hold X & start until LEDs 1&2 flash, then plug in USB cable. This time I was able to configure the Home button to OSD, so its workin...

Hi, I recently went through the main joystick setup using 8bitDo M30 (wired over USB). On M30 there are the 3 small center buttons: "star", "minus"(select), and "home". I configured the center minus button to "select", and I wanted to use one of those others as OSD button, but the config menu wouldn...