Відео

Probably works only in Old Zero (not 2 / W) but untill I get any operational Old zero - it's unknown.. For pi zero W not working 😢

It is one of many different Pi1541 hats available on the interwebs. This one is from ribit.se.

@@TheLEEC Thanks. :)

Hi Sean! The PLA replacement I was using was an old CPLD implementation from 2010 by fpgaarcade. It was fairly experimental. The PLAnkton on the other hand is a great choice and should serve you well.

@@TheLEEC Thank you for the information!

Hi Kuoxsr! A little clarification… Don’t even try getting anything but a rainbow screen on a Pi Zero Pi1541. The rainbow screen is expected behaviour. Pi1541 never touches the GPU on the Pi Zero, because initialising it would steal precious CPU time later in the emulation. It is very unusual for software to run without starting the GPU on the Raspberry so the confusion is very common. The only way to get visual feedback on a Zero is with an OLED screen plugged onto the hat. I suggest you start over, focus only on the Pi1541 hat and ignore/cherish the pretty rainbow.

@@TheLEEC Well, then I'm stuck, because with the hat attached, I get absolutely nothing. The screen doesn't come on at all. I may need to contact the seller and get a refund for a defective hat. I've tried testing the gpio pins I soldered on, thinking I did something wrong, but two different programs that claim to do that either exit without output or tell me my hardware isn't supported.

I see… That sucks if it turns out to be broken. Do you have a link to the hat I could check out? Maybe something is non standard on it and needs a tweak. I won’t be able to check today but I could get back to you. Also you can check this video for the issue in action: ua-cam.com/video/mO0iTIXjYAA/v-deo.html I had to make it unlisted because I got spammed with confused people that had all possible issues not related to Pi1541.

Thanks for the info, Knut!

That sounds great! Is there a place to download that right now, or is it a closed beta?

@@theparkourhobo It's not for public download, but I guess Stephen will mail it to you if you ask him via mail! ;-)

@@fuckutube65 Why is he not updating github???

Hi Crazy! :P When it comes to the Pi1 models the results can be a bit unpredictable. The overclocking needed works on some boards, but it’s not guaranteed. Cooling helps sometimes but not always, so transmission line timings are probably part of the problem. It’s worth trying though! My attempts (2 B+ boards) have been successful and stable without cooling.

Hi Bob! I’ll check and get back to you.

D3 seems to be a standard 1N4148.

@@TheLEEC Thank you so much !

No problem, Bob. Good luck!

Grazie, Giuseppe!

Currently, no. Pi1541 is developed to run bare metal on the Raspberry Pi 0 (or 3) without any operating system, so a lot of the code is hardware specific. I’m sure Steve White wouldn’t object if someone wants to contribute and port it to other platforms but I don’t think it’s on the roadmap.

​@@TheLEEC I see, didn't knew it was running bare-metal. Thanks.

Thanks, Gavin, for the feedback. Good suggestion.

HDMI output on Pi1541 is only supported on Pi3 models. Running Pi1541 on a Zero or Pi1 WILL display a rainbow screen on HDMI, because Pi1541 never initialises the GPU at all. It still runs, but never touches the GPU, so the firmware rainbow screen will be the last thing the GPU is asked to display. So, in your case, if you have prepared the card right and use the right kernel.img for Zero, I would go with the assumption that Pi1541 is actually running, but you'll need verify that by connecting to a Commodore or using an on-HAT OLED. Good luck!

Excellent! I guess that was the most likely culprit, but it would have been nice if it wasn’t. Thanks for the report and party on!

Thanks got the kind words, Luigi.

Thanks Boris! I’m glad you found it useful.

My pleasure. FYI, the 1B+ will usually work fine with these overclocking settings, but they are quite far above the reliable speeds for both the RAM and SoC and results may vary. I’ve seen a few 1B+ that struggle to keep up, but I haven’t heard of any of them being damaged from it. Good luck!

@@TheLEEC thanks. I've got some extra heatsinks

Hi, Len! Thanks for the kind words. On the Pi0 and Pi1 models Pi1541 has a reduced feature set, so the HDMI and USB control is not available and not possible. The reason for this is that anything that needs constantly unpredictable CPU cycles will make the emulation unstable. The single CPU core, already running at a high load on these Raspberry models, needs to be completely dedicated to the cycle exact emulation. So, the HDMI interface requires a Pi3 (which has 4 CPU cores that can coordinate the tasks without blocking the emulation thread).

@@TheLEEC ....Thanks for the explanation. Makes me sad that I won't be able to use those things, but I understand the reasoning ;-) ....it makes sense. I haven't got my Pi1541 Zero hat yet, but thought I'd try it out with my full-sized one while I wait. Your video was a really good guide to get the SD card set up correctly. Keep up the good work!

My pleasure! Good luck! Work is still being done to optimise the code and cram as many of the features as possible into the Zero, but the single core is a challenge. Maybe some day a new Zero version with multiple cores will come and solve that. All the best!

Haven’t used the zero epyx cart but as far as I can tell it’s a fairly standard Pi1541 Option A implementation. If you have configured settings.txt according to Option A from Steve’s guide, my two bets from your description would be a dodgy OLED display or a weak 5V supply. If you could make a video of the issue it might be possible to get a better “feel” for the symptoms.

@@TheLEEC suspect a 5v problem also. Also, I'm not sure what display I have on the cartridge and maybe uncommented the wrong lcd type. About the 5v... The pi is powered by the cartridge slot. In videos though, it seems to work

The PCBWay reference design for the zero epyx suggests ssd1306_128x64. It’s the most common one by far. They usually can’t dim though, as far as I know. That’s an odd symptom. Corrupt data (wrong type selected) shouldn’t make it dim. It should just be black or in some instances distorted.

@@TheLEEC I'll be back after some more investigations

@@TheLEEC ua-cam.com/video/nUTFlqL2qFE/v-deo.html uploaded an extremely high quality Hollywood piece for you to look at. Don't know if it shows that well though

Hi Chris. I got it just randomly from eBay a long time ago for 15ish USD. It’s a simple design so most retro shops has it, and many small-batch makers and hobbyist sell them on places like SellMyRetro or eBay.

@@TheLEEC Really appreciate it. I am going to be buying the ARM2SID as well since they sound amazing.

Good choice! The ARM2SID is excellent and worth every cent. Dual, even triple SID, SFX support, excellent emulation and extremely configurable. I don’t regret it. Good luck!

Because I’m secretly an Atari guy and hurting it gives me pleasure. Mmmmmmm! Yeeah, twist that cap!

@@TheLEEC that would be a point as after people watch videos like this. I am one of the guys that needs to repair the machines after they damaged their card .. soo tried of watching this type of method that is just plain. wrong, use proper tools/methods or simply just do not do it. it is not even hard.

;) I know, John. And I agree. They come to me on this side of the lake as well. I will put a disclaimer to clarify my ”This is not the way”-remark in the video description. Ya know, for old times sake.

@@TheLEEC YES please do that!

There... ;) God fortsättning.

Hi David, sorry for the slow answer. Thanks for the kind words. From the context of the video I assume you are using a Pi Zero or Pi1. In this case the HDMI and USB is not available and not possible. The reason for this is that they need constantly unpredictable CPU cycles and the single CPU core needs to be completely dedicated to the cycle exact emulation. So, the HDMI interface requires a Pi3 (which has 4 CPU cores). So unfortunately your options to control Pi1541 are to use the FB64 file browser on the C64 or get a full LCD equipped Pi1541 hat.

@@TheLEEC Thank you very much, yes I am using an RPI 1 Model B+ w/ 512MB RAM and yes, your reply is exactly what I needed to know. So thank you for your explanation. I'll go with the FB64 file browser. At least until I get an RPI 3b+. :-)

Also great points. Well, the choices are many. The minimal solution option A hardware can be built for peanuts (<€3) with a voltage converter board or a handful of low power mosfets. A full hat with buttons and screen is on average €30-40 shipped but can be found for less in kit form and way below €20 if sourcing the components individually off of eBay or similar. Links to the hat kit I use is available in some of the video descriptions. In the end, Pi1541 is just free software and nothing else. It’s very much aimed towards hobbyists and the hats are products created and born from the community. If you’re looking for a solution in a box with embossed print that open by air flow in 7.3 seconds, Pi1541 is not what you’re looking for.

ZIP? Who’s he? :P Well, sure, I see your point there... but that sort of defeats the purpose of doing an instructional video, doesn’t it? “Hey teacher, I need help with this algebra stuff. I’ll just pop off to the pub while you do it...”. Secondly, even if many people have a similar setup, a surprising amount of people have variants with different LCDs, rotary encoders, etc. You need to make decisions to get it running. Furthermore, the Pi firmware bits and the drive roms are not mine to redistribute and that’s why Steve White hasn’t included them in the Pi1541 package. But sure, some of the defaults in the config file could probably be updated to more common settings. Maybe Steve will work on that.

@@TheLEEC no, it does not. But nevermind.

Thanks for the kind words. I agree, the Ultimate is an excellent device. I covered it briefly in an earlier video. The cost of Pi1541 does vary a lot depending on what point you start at. Still, a new €10 Pi Zero or €35 RPi3 with a €20 hat and potentially a leftover PSU from some old phone still a far way from the €140 list price of the Ultimate. You can go very low in cost for Pi1541 and get a good experience, but going all in with all new stuff, list prices, big screen and custom case you might get close to €100. And if you’re aiming for the best possible you’re probably better off going for the Ultimate. Neither Pi1541 nor SD2IEC will get you the best.

Kalispera Costa, To EuroPC ine ena diskoli agori. Theli +5V, +12V kai -12V (negative). Check out oldcrap.org/2018/03/11/schneider-euro-pc/ for details.

Well done 😜

Hi Tony, Getting the Pi 1 running should be seen as a challenging entertainment more than a feasible solution at this point. The Pi 1 Plus model with the newer form factor has many improvements in its power rail circuitry and has a better potential for overclocking over the very original Pi 1, but even there it is a challenge and luck varies between boards. I would probably not see it as worth the effort given the 26-pin obstacle and that a supported Pi Zero can make the problem go away for less than $10. But... maybe I’d try it for the challenge with the lowest expectations. :) Good luck!

@@TheLEEC Thanks for the answer, George! (lol) I used to have that board in my closet and I thought will be a good use for it! My 3 board is with retro pi... Thanks for the advice, great video by the way!

Hehe ;) thanks. Glad you liked it.

Here are some info on how to connect the 26pin gpio (Not done by me by the way! ). It's implemented and supported in the original source code by Stephen White as well as far as I understand. Have been meaning to test this for some time now, but sadly I haven't had the time to test it myself. But will do that as soon as I can :) github.com/Andreas-B1105/Pi1541-RPI-1B-26GPIO

Good stuff. Thanks Björn!