masteries Posted November 29, 2022 Share Posted November 29, 2022 With the fix it works very well, I included the fix externally in my unit, as Yannaros knows Happy to see colours in the Apple IIc Quote Link to comment Share on other sites More sharing options...
YannAros Posted December 7, 2022 Author Share Posted December 7, 2022 Some news about the Apple 2e version, cards from the first very small batch are being spread out at the moment and there are good and less good news: - The card is working on NTSC machines (PN 0820-068-B) - The card is also working on PAL machines with PN 0820-073-A and 0820-073-B - However, a user has no picture coming out from a PAL Apple 2e with PN 0820-188-A, I'm investigating this trying to find the root cause and a solution for it. This delays a bit the manufacturing of news cards, I let you now about the debugging progress 2 Quote Link to comment Share on other sites More sharing options...
potatohead Posted December 9, 2022 Share Posted December 9, 2022 Go go go! Thanks for the update! Quote Link to comment Share on other sites More sharing options...
potatohead Posted December 24, 2022 Share Posted December 24, 2022 Any News? Could you use help? No pressure. I can wait. Just wanting you to finish it one day. Quote Link to comment Share on other sites More sharing options...
YannAros Posted December 24, 2022 Author Share Posted December 24, 2022 Hi, I’m taking a small break for Christmas at the moment. We found another issue in DHGR mode, there is crosstalk between signals on the board leading to random black pixels displayed on columns every 7 pixels. I can get rid of those just by touching the card at a given spot: I need to identify better the signal(s) causing the issue and rework the layout and/or add some filtering. 1 Quote Link to comment Share on other sites More sharing options...
trash_44fr Posted December 26, 2022 Share Posted December 26, 2022 Keep up the good work ! You're almost there. Quote Link to comment Share on other sites More sharing options...
micheledipaola Posted December 26, 2022 Share Posted December 26, 2022 hi @YannAros, impressive work here! a couple of (noob) questions: regarding the IIc board, could it be possible to output the signal to some more up-to-date plugs / destinations? I am trying to adapt an LCD panel to a IIc / IIc+ and it has composite, vga and HDMI input... any chance to get there without other steps? I have a similar card and I managed to get an hdmi signal using a scart-to-hdmi box, but I would really like to skip that step or have it integrated somewhere... somehow possible? regarding the IIe board: I don't want to over complicate things, but I remember there was an expansion card (RAMworks?) which IIRC offered rgb out AND 1Meg RAM expansion... maybe moving in that direction could also be interesting? Quote Link to comment Share on other sites More sharing options...
micheledipaola Posted December 26, 2022 Share Posted December 26, 2022 On 12/16/2021 at 7:33 AM, YannAros said: It is not to VGA but to a SCART input. It doesn’t modify the horizontal frequency that remains 15kHz. You need a 15kHz RGB input on your monitor or an additional rgb to hdmi converter. The main goal is to get couloir output from PAL Apple IIc that are not generating a proper PAL composite signal for the chroma part. On 12/16/2021 at 4:48 PM, Baldrick said: If it outputs 15 kHz then I can use a GBS8200 to up-convert it to VGA. The trick is to get the initial high quality RGB out of the IIc. Definitely still interested. @YannAros I missed the previous posts where this was already discussed, I am sorry. I will have a look at GBS8200 cards. @Baldrick did you manage to look into it already? Quote Link to comment Share on other sites More sharing options...
YannAros Posted December 27, 2022 Author Share Posted December 27, 2022 To get HDMI out you should look at Pi RGBtoHDMI here https://github.com/hoglet67/RGBtoHDMI/wiki It will be smaller than having the A2cRGB adapter plus an RGB to HDMI converter. The main issue right now is obtaining a pi zero. Quote Link to comment Share on other sites More sharing options...
micheledipaola Posted December 31, 2022 Share Posted December 31, 2022 Thanks @YannAros, I was reading about it just yesterday. I actually have a spare Pi Zero which I am using to run RetroPie, and could be used for this... but I will need the 12bit shield, and the TTL extension if I understand correctly. They don't seem to sell them now, and I don't feel confident in building everything from scratch. I will wait and keep an eye on the shop page Quote Link to comment Share on other sites More sharing options...
YannAros Posted January 23, 2023 Author Share Posted January 23, 2023 @micheledipaola TTL extension isn't required, you can connect directly to the 12 bit shield, I'm doing it this way. The cabling spec is available here : https://github.com/hoglet67/RGBtoHDMI/wiki/Cables#apple-iic-digital-interface-1--1-bit-ttl Quote Link to comment Share on other sites More sharing options...
YannAros Posted January 23, 2023 Author Share Posted January 23, 2023 I've managed to solve the "crawling black dots" issue. A simple pull-up on the GR input got it working, the signal is quite low and accesses to the 64kB additional memory was creating noise on the GR signal. This in turn induced a CLEAR of the 74HC173 used to sample and hold pixels. 2 Quote Link to comment Share on other sites More sharing options...
potatohead Posted January 25, 2023 Share Posted January 25, 2023 Nice! Does that mean you might be in a place to produce //e boards? ( hoping, but happy to wait ) Quote Link to comment Share on other sites More sharing options...
YannAros Posted January 26, 2023 Author Share Posted January 26, 2023 I’m hoping to order a small batch soon, unfortunately there are still some chips that are not easily available. 2 Quote Link to comment Share on other sites More sharing options...
YannAros Posted February 14, 2023 Author Share Posted February 14, 2023 (edited) I've ordered new boards for Apple 2c and 2e versions including all corrections and improvments indentified with the first prototypes. I'll contact people that showed interest when I will have received and finalised parts. It might take 2 or 3 more months to be ready. Edited February 14, 2023 by YannAros Quote Link to comment Share on other sites More sharing options...
potatohead Posted February 14, 2023 Share Posted February 14, 2023 Cool! Thank you. Quote Link to comment Share on other sites More sharing options...
nick3092 Posted February 14, 2023 Share Posted February 14, 2023 10 hours ago, YannAros said: I've ordered new boards for Apple 2c and 2e versions including all corrections and improvments indentified with the first prototypes. I'll contact people that showed interest when I will have received and finalised parts. It might take 2 or 3 more months to be ready. I didn't realize you were building the //c version as well. It seemed like based on your posts since you open sourced it, you weren't really building them. You already have me down for the NTSC IIe version. If you have a spare NTSC //c version available, I'd be interested in that as well. If not, no big deal. Quote Link to comment Share on other sites More sharing options...
YannAros Posted February 15, 2023 Author Share Posted February 15, 2023 It is open source, you can do it yourself, I'm building some parts for people that do not have the skills or do not want to purchase several PCBs. Quote Link to comment Share on other sites More sharing options...
nick3092 Posted February 15, 2023 Share Posted February 15, 2023 Yeah, that's why I asked. I don't have the tools or skills for SMD work. But if you don't have the parts/boards or time to build another //c unit, then no big deal. Quote Link to comment Share on other sites More sharing options...
YannAros Posted February 15, 2023 Author Share Posted February 15, 2023 I got additional requests and the opportunity to build new parts, I'll contact you when I will have some ready Quote Link to comment Share on other sites More sharing options...
nick3092 Posted February 15, 2023 Share Posted February 15, 2023 Awesome! Thanks! Quote Link to comment Share on other sites More sharing options...
potatohead Posted February 16, 2023 Share Posted February 16, 2023 Where are the files for building your own? I do want to buy a //e board from you, and want to check out the design, maybe make another one just to learn stuff. Quote Link to comment Share on other sites More sharing options...
nick3092 Posted February 16, 2023 Share Posted February 16, 2023 29 minutes ago, potatohead said: Where are the files for building your own? I do want to buy a //e board from you, and want to check out the design, maybe make another one just to learn stuff. The IIe board has not been open sourced yet. At least no links have been given in this thread so far for it. The link to the IIc board is below from earlier in the thread. Looking at all the projects associated to him on OSHW Lab, I don't see the IIe board listed. Just the IIc board and some 2600 and Intellivision video mods. https://oshwlab.com/yannick.erb/apple-iic-to-rgb_copy Quote Link to comment Share on other sites More sharing options...
YannAros Posted February 16, 2023 Author Share Posted February 16, 2023 I’m waiting for the new prototypes to be ready and tested and I’ll open the access to the 2e board files. 1 Quote Link to comment Share on other sites More sharing options...
YannAros Posted March 20, 2023 Author Share Posted March 20, 2023 I've open sourced the 2e baord also now, you can find it here : https://oshwlab.com/yannick.erb/a2e_80col_rgb_copy_copy 2 1 Quote Link to comment Share on other sites More sharing options...
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