MiSTer FPGA Forum

Hi, I've got no experience with this sort of setup so I can only give an uneducated guess. This IO board looks like it connects through GPIO pins?? If so that's immediately a no go as most, if not all, of the GPIO pins are in use either for SDRAM or the Analogue/digital MiSTer IO boards. To get it to interface with that second row (instead of the s...

Hi guys! New here to all these stuff. Just to be clear then. If I purchase the digital I/O version, I won't be able to connect to TVs with AV/component inputs, right? There is no adapter from HDMI to AV/component that works, that's it? Thanks! No, unless it's changed since I bought my first mister a few years ago, the digital board has no video ou...

I don't expect the ao486 core to be speed control. Because sorgelig sees ao486 as already completed core and is no longer interested in it. And the improvement of ao486 hasn't been going well for quite a long, even though ao486 has been reported multiple errors. I suppose because for most things it is capable enough, it runs most 386 and 486 games...

Really. All I did was change this line https://github.com/MiSTer-devel/ao486_MiSTer/blob/88ad92a83f292a4cb83e0c5d61fa78152ea109e8/ao486.sv#L239 From "h0P2O7,Overclock,Off,100Mhz;" To "D2P2O7,Overclock,Off,100Mhz;" You can change seeding without doing this. Quartus allows you to manually set a seed value. You can also just add r...

Running at 100Mhz...you can compare it with overclocking your CPU. The AO486 has stable timing at 50-60Mhz. That's what e.g. Intel would sell it at. Now most boards can run it at 90Mhz. Every build in Quartus with different seed is like buying a new CPU and trying it. However: it's bound to your personal DE10-Nano! Just because a build runs well f...

Wonder why he decided to take this route? I wouldn't want to speak for him, but my understanding that I get is that he has his only particular kind of workflow and in particular doesn't pick up already commenced work... basically to get a firm grasp of all aspects of the target and the code. Also allows to potentially incorporate features from oth...

My question is, how much of a performance improvement do you get going from 90Mhz to 100Mhz? I realize at these speeds every extra Mhz makes a difference, I'm just curious how much of a difference this can possibly be. 10% Anyway the settings I was talking about are under... Assignments - Settings - (new box opens) - Compiler Settings - Advanced S...

Ok now I get it :) In the past when I used to try and compile it it would always fail, so I changed the option mentioned above that made it work successfully. Something must have changed in ao486 that now lets it compile successfully with that option set to "Automatically/Never" but because it hasn't "decreased the design speed"...

Awesome, glad to see I'm not the only one having some luck with 100mhz mode. Over 3 weeks using it, and still no crash or lock up on my end. I think we need more people to test it out though and report back. Reporting back. Now I had used ao486 with the OC in DOS and Windows 95/98 games, benchmarks etc, and it was always rock solid. I compiled fro...

I only used the free 17 version of Quartus with the cyclonev-17.1.0.590.qdz and the model sim setup For some reasons I had fitting errors during the compilation, so that's maybe because of the free version? Anyway, after trying and trying again, I was able to compile successfully. No it's a setting in Quartus. The default is to favour performance ...

Do you still need a paid version of Quartus to compile? I thought I remembered that Ao486 included some IPs that weren't included in the free version. I only used the free 17 version of Quartus with the cyclonev-17.1.0.590.qdz and the model sim setup For some reasons I had fitting errors during the compilation, so that's maybe because of the free ...

If all you are doing is trying to set the core to Debug so you can bump it up to 100MHz you can just use this /config/ file and swap them out. Note, 100MHZ is unstable outside of DOS4GW protected game modes and not worth it as a daily driver... AO486.zip I actually just wanted to do incremental upgrades on the CPU up until it crashes in the games ...

Been using Mister for 2 years.connected to a CRT PVM.never had any issues. Yesterday I ran the update all script,it wouldn't load.(blank static screen) So I did a clean install. Now when I try to run the update script,it gives me this error: IMG_4430-3.jpg Tried these changes in mister.ini but makes no difference. I'm using IO Board and VGA cable ...

I'm speechless, this is one of the worst reviews or talks i've ever seen about the mister, he didn't even talked about what's supported, also "maybe dreamcast" misinformation about what the board can actually achieve.. https://www.youtube.com/watch?v=zesVf3XWayI I don't know, I don't think it was that bad he seemed quite pleased with the...

Silverbot wrote: ↑Sat Oct 09, 2021 8:21 am I don’t know how it happened, but the global volume was on mute, what a idiot! . Many thanks for your help

If you use a keyboard that has a mute button it could be that, now I'm not saying that I fell into that trap... But well you can put two and two together

bazza_12 wrote: ↑Mon Sep 13, 2021 12:38 pm again I never had any issues with that.. i do wonder what you guys are doing with them to make you feel like these ports aren't durable.

Wait, what? Are you telling me that a hammer and chisel aren't the correct tools to plug in the USB and that impact drivers shouldn't be used to undo screws?? Now they tell me.

I thougt RAM would be no problem, because at least 32MB SDRAM is mandatory fo MiSTer to use all cores? An the ARM core with 1GB RAM (Linux system) on the MiSTer board should compensate any disadvantage to the Mega65 FPGA. It’s because I have no skills in programming HDL/VHDL you should judge the technical details to compare MiSTer with Mega65. Sor...

Interesting numbers. So a C64 with two 1541 occupies 42% of the MiSTer FPGA. (and the OPL3 for the FM sound expender option) Has anybody here numbers from other cores? Atari ST or Amiga? It’s been a hot minute since I’ve compiled the ao486 core which I do for the 100mhz OC but and if I remember correctly it is around the 84% mark. Edit. It isn’t s...

manni199 wrote: ↑Thu Oct 07, 2021 3:45 pm

bertnorg wrote: ↑Thu Oct 07, 2021 3:15 pm exactly 41.62%

Did you compile the core to get such exact numbers?

Remember though that number includes all the other FPGA things related to the MiSTer setup and not just that of the Core, what percentage difference that makes I’ve no idea.

Hello, Excuse my poor english. I've been attempting to get component video to work through the I/O board, but for the life of me I can't get anything to display whatsoever (black screen). I'm attempting to connect to my consumer grade Sony Trinitron 42 inch CRT with a VGA to Component adapter from MisterAddons. Video output through HDMI works comp...

The clock is set when you load the ROM, based on the region specifications already discussed. It isn't changed on a reset. The only thing you're doing is changing the in-memory region declared to the game, so the game's region-programmed behavior will change, but proper video output and timing will not be set. Well, that sounds much like a bug to ...

Thank you Sorg

The problem, of course, is that it takes HELLA longer to 'rewire' FPGA logic than it does to follow an execution path - thus, while this approach would indeed allow for more complex design with smaller logic blocks, it will have a dramatic and inverse effect on net performance, which is why nobody does it. Remember us when you're wealthy and famou...

Basically no limit to flashing the FPGA. 'Altera does not specify the number of times you can reprogram or reconfigure FPGA devices because these devices are SRAM-based. An SRAM-based device can be reconfigured as often as a design requires; there is no specific limit.' Source: https://www.intel.com/content/www/us/en/programmable/support/support-r...

just watched this, its really interesting in relation to lag or the lack of it on Mister. Input lag is the major killer feature where no matter what trick is used software emulation cannot and probably never will beat FPGA. 90% of the time four frames of latency might not really matter, but even if we can't easily perceive four frames of latency v...

- You tried to sell your beautiful 2009 Dual-Xeon Mac Pro, fully working and expanded with the latest OS installed for about 100$, and people emailed you it was "too expensive" and they wanted to pay like 50$ for it at most. I mean, a single chip of ECC RAM ( and I have 8 of them ) is worth more... - You search on Ebay for a nice used C-...

Really oh ok, well thank you for the information it's appreciated. Not really knowing what the genuine models are I could only go off the eBay listing. 🙄 Correction: There was indeed a genuine pad issue marked 1650 -50 MADE IN MALAYSIA , my bad. 3buttonmark2back.jpg But that's still a standard MD "croissant" 3-button pad, not a 6-button ...

lmao i kinda love this post actually, it's cute edit: btw, I mean, I have no idea what OP is saying, what they mean, but it's bizarre and confusing and it makes me laugh. Yea that's how I see it, doesn't seem like there is any real venom behind it. Only thing is I don't see what issues OP is on about, maybe I got lucky but the updates have been fl...

im now wondering if a custom 1920x1080 modeline, with adjusted blanking and synchro times, would correct this? It's worth a try but the whole point of vsync_adjust=2 is that it follows the pixel clocks and refresh rates of the original machines to give the lowest possible latency, that would likely still upset the display even if you put in a cust...

Do you use a soundbar? I see audio delays (not with MISTER specifically) where if there is no audio (which there isnt on mister menu) the moment audio starts it kinda "wakes up" the soundbar. So you will miss a tiny bit. no, no soundbar with my setup. its hdmi in to the TV, and digital out to an amp/speakers sounds like a issue local to ...