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| + WoC` (~WoC@072-176-016-132.res.spectrum.com) | 05:34 | |
| - WoC` (QUIT: Quit: Leaving) (~WoC@072-176-016-132.res.spectrum.com) | 06:11 | |
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| + S0rin (~S0rin@user/s0rin) | 11:20 | |
| + Doomn00b (~Doomn00b@83-233-136-208.cust.bredband2.com) | 12:31 | |
| Doomn00b | Hey all! :) | 12:32 |
|---|---|---|
| Doomn00b | I've come to you for a special reason... I was looking at the schematics for the ZZ9000 g-card and I noticed that I couldn't find the original Kicad-files? I would like to change them a bit, and upgrade them to Kicad 6+, but I can't find the files on the Gitlabs. | 12:33 |
| Doomn00b | Where exactly, are the Kicad-files located, on the gitlab? | 12:33 |
| minute | Doomn00b: the zz9000 is not (yet) open hardware, so there are no kicad files available for it | 12:56 |
| minute | Doomn00b: what would you like to change? | 12:56 |
| Doomn00b | Oooh... I could have sworn it says it's open source though? MNT kindly does give us the schematics in PDF-form, so I just assumed... | 12:57 |
| Doomn00b | Nothing much, just changing around a bit how the schematic is laid out and such, to make it easier for me personally to overview it. | 12:57 |
| Doomn00b | Not to worry though, I have started recreating the schematic in Kicad 6, and will push it to Gitlabs once I have something substantial! :) | 12:58 |
| Doomn00b | Side-note: the main reason I got interested in the ZZ9000, is because I'm contributing to the TRH9000 g-card for the MSX - I wanted to have a look at how MNT solved the issue of multiple clocks. | 12:59 |
| minute | Doomn00b: the firmware is open source, the hardware not yet | 12:59 |
| Doomn00b | Ah, is there a particular reason for that btw? | 13:00 |
| minute | Doomn00b: yep, the zz was a major factor that let our small company survive over the first years, and cloning would have made that difficult i believe | 13:00 |
| Doomn00b | Oh, so it was a commercial project from day 1? I didn't know that. | 13:01 |
| minute | yes, initially i made a complete open hardware gfx card that was a mezzanine for a spartan 6 board, like 7 or 8 years ago | 13:02 |
| minute | and then people wanted to buy a product | 13:02 |
| minute | so we made the va2000 for a while and then the zz because people complained that the va2000 was too slow | 13:02 |
| Doomn00b | Oooh... gotcheh'. Well, cheers for making it as open as you did - you did a great service for the Open source retro-community. :) | 13:03 |
| minute | thanks! i also want to open zz kicad source at some point | 13:03 |
| minute | the batches are getting a bit smaller now, so the time is approaching | 13:03 |
| Doomn00b | Sweeeet.... | 13:03 |
| minute | we also did a lot of support for the cards etc, this would have been impossible as a hobby | 13:04 |
| minute | 2 people (one of them me) work at mnt full time since zz was designed | 13:04 |
| minute | our main focus now is the reform and pocket reform open hardware laptops, these come with full kicad sources from day 1 | 13:05 |
| minute | Doomn00b: cool project @ TRH9000! | 13:06 |
| Doomn00b | Daww, cheers - it wasn't my idea though, I just tagged along. :) My own personal love-project is the ULTRA-MSX!! Finally, a 32-bit MSX (like the amiga 2000) with modern quality of life. ^^ | 13:07 |
| minute | where can i read about it? | 13:08 |
| Doomn00b | You can do more than read about it - you can have a look at the whole shebang on Git! :) Just let me update the source, and I'll link ya'. | 13:11 |
| Doomn00b | Goodness... Now I'm having multiple git-errors. Well, here's the link @minute : https://github.com/Doomn00b/MSX_Ultra | 13:16 |
| minute | Doomn00b: cool, thanks! and you use freecad as well i see | 13:18 |
| Doomn00b | Of course - if one is doing an open source project, it makes total sense. ^^ | 13:33 |
| jzu | minute: are you aware of the issue where ZX9000's AHI output is distorting? Seems to be happening atleast when using Hippoplayer through AHI with ZX9000. Doesn't occur on Paula passthrough. | 16:20 |
| jzu | it's been 'confirmed' by multiple users, not sure if the word ever reached MNT :) | 16:21 |
| minute | jzu: well, i know this happens if the volume is turned up too high | 16:21 |
| jzu | I tried dialing the volume 50% but didn't really help for some reason | 16:21 |
| minute | hmmmm | 16:21 |
| jzu | it's easy to recreate if you have Hippoplayer and some mod files, set Hippo to AHI and listen a minute or two and you should notice the distortion | 16:22 |
| minute | hmm, i did quite a lot of testing with that setup | 16:22 |
| minute | i.e. listening to game mods with hippoplayer+ahi | 16:23 |
| minute | it is possible that it sounds different from paula because of the resampling to 48khz | 16:23 |
| jzu | Should the AHI be always set to 48kHz, and use the Stereo++ device? | 16:55 |
| jzu | I'm doing ZZ9000AX: 16 bit Stereo++, Mixing rate 48kHz, Master volume 500, Stereo level 100% and getting 'static crackle' like distortion every now and then | 16:58 |
| jzu | so Master volume is halfway | 16:58 |
| jzu | dropping the Stereo level to 50% along with Master volume being 500/1000 doesn't do the crackle | 16:59 |
| jzu | ah, from AHI webpage: | 17:03 |
| jzu | Many of these programs also offer the setting of volume boosting, which will raise the volume but can introduce distortion. To minimize this distortion, the user should select Master volume with clipping from the advanced page in the preference program. | 17:04 |
| jzu | I have mine set as Master volume: Without clipping | 17:04 |
| jzu | http://www.lysator.liu.se/(faq)/ahi/v4-site/ "Low volume" section. | 17:05 |
| jzu | with Master volume: With clipping I don't get any distortion now matter if I dial both Master volume and Stereo level to 100% | 17:06 |
| jzu | s/now/no/g | 17:06 |
| - Doomn00b (QUIT: Quit: Leaving) (~Doomn00b@83-233-136-208.cust.bredband2.com) | 20:23 | |
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