MiSTer FPGA Forum

Would you be able to do a final update on the Saturn core when the core gets buttoned up? Feels like were in the homestretch of development and it would be amazing to have PWM on the final or near final release so it could be the definitive way of playing Saturn games. Thanks so much again! I'll make new builds probably about once a month if there...

Wow, that is awesome. With lightpen input from the oscilloscope? How is that even possible? The light sensor is just directly attached to an interrupt pin on the cpu through the user port, just like the real Vectrex. If the sensor is triggered while the program is drawing the lines of the little cursor, the vectrex software will know the position ...

This is great! I was wondering years ago if something like this would be possible. I guess with the new analog IO boards, with 24-bit VGA output, this could work even better? Some games I remember using variable brightness (Z output) are: Mine Storm, Web Warp and Dark Tower. I have a Vectrex, but also a CRT scope, it would be fun to try this. The ...

Not trying to stir anything, but forget Mister, or even emulation for Vectrex, and just get a REAL one, you'll not regret it. Nothing looks like a real Vectrex running, not Mister, not Retroarch, not shaders, nothing. Vectors look the best on a Vector Monitor, not on some modern display. you are 100% correct but these days they don't come cheap. Y...

I made some modifications to the Vectrex core to get XYZ output from the VGA port for an oscilloscope. Here is my github fork with some more details and pictures: https://github.com/Jokippo/Vectrex_MiSTer_XYZ I included Gerbers and STLs so you can make your own adapter if you have some electronics knowledge. Videos of it in action: https://youtu.be...

Hello, any chance we can also get an rbf for the PSX 2x core? That one was a oneoff so one benefit is not only the 2X cpu but also that since there are no more updates, if we get PWM for it the core is basically perfect forever. I still usually use the default 1X core, but 2x speed for increased frame rates is nice in certain games. Still, I like ...

Yes, when using the scaler, PWM causes jitter. The scaler clock isn't fast enough to do PWM so it uses the video clock to do the modulation. But since the scaler and video clocks are different they don't align and end up jittering. I don't have a good solution for this yet, maybe PWM should just be disabled for the scaler output. Did you find a so...

naylord wrote: ↑Sat Mar 16, 2024 12:26 am

wow this is sick. Why can't this be integrated into MiSTer main as an option for those that would want it?

I made a PR but Sorgelig wasn't interested. He said he preferred people getting a new 24-bit board over adding complexity to the framework.

I personally don't think it is too complex, but Sorgelig can probably judge that better.

I tested the last version for the N64. I have two setups that I can switch between. It works without problems on my 15KHz CRT TV. When I use the analog output with a VGA monitor in higher resolutions, the PWM still gets applied (and color banding still seems to be reduced), but the image shows interference. It looks similar to dot crawl on composi...

I have made a couple of builds that add PWM on the 18-bit DAC to get 24-bit color for the cores that need it. This is for any signal that uses the VGA port on the IO board. It works by quickly alternating between two different color values to get a color in between. The PWM happens very fast so it can be done even for 640 wide images. This looks g...

I have made a couple of builds that add PWM on the 18-bit DAC to get 24-bit color for the cores that need it. This is for any non-scaled signals that use the VGA port on the IO board. It works by quickly alternating between two different color values to get a color in between. The PWM happens very fast so it can be done even for 640 wide images. We...