Mehridian Sanders Posted February 2, 2020 Share Posted February 2, 2020 New to the C64 forums. So ... Salutations! This is the original c64 board correct? I am very lucky to have gotten it in trade. It did not come with any of the accoutrements ( no cables ). The previous owner said no screen output but did not mention which port he tested. Is there a good place amongst the interwebs that can assist a layman to getting this bad boy working again? Because I am new to the C64 I dont know much about which source is the most relied upon. Thank you kindly in advance. Sent from my SM-G955U using Tapatalk Quote Link to comment Share on other sites More sharing options...
Mehridian Sanders Posted February 3, 2020 Author Share Posted February 3, 2020 And as luck would have it at Goodwill today.... for $30Sent from my SM-G955U using Tapatalk Quote Link to comment Share on other sites More sharing options...
krslam Posted February 3, 2020 Share Posted February 3, 2020 I see a mix of 82, 83, and 84 dated chips, so you've got a bit of a hybrid there. I'd recommend you check the forums at www.lemon64.com for repair guidance. 1 Quote Link to comment Share on other sites More sharing options...
+OLD CS1 Posted February 3, 2020 Share Posted February 3, 2020 If the video port does indeed have only five pins, this is a very early production mainboard. With the later-dated chips I would conclude it has either been factory refurbished or repaired by someone. Though I would expect a sticker indicating it had been refurbed and I would not expect Commodore to return a 5-pin unit to a customer. 1 Quote Link to comment Share on other sites More sharing options...
Mehridian Sanders Posted February 3, 2020 Author Share Posted February 3, 2020 Well the refurb makes sense.. based on the branded back of the unit. Here's a quick shotMy assumption is that the school bought refurbed units. The video out will need some cleaning as will the rest of the unit. However, I am pretty sure the board itself is original, and that it can be brought back to life. Sent from my SM-G955U using Tapatalk Quote Link to comment Share on other sites More sharing options...
+OLD CS1 Posted February 3, 2020 Share Posted February 3, 2020 Good golly they went to town on that thing! I looked more closely at your photo and you have a Rev A board. This is the second revision of the first commercial main-board. It seems to be the most prolific of the revisions. The history is hazy for me on this -- I have a silver badge with the 5-pins but, much to my shame, I do not know the board revision OTTOMH. Given the revision and is pervasiveness, I have read elsewhere that it is not impossible that it was actually made later than 1982 (the sticker on the cartridge port may indicate 1984) and populated with chips in '85 for final sale. As well, apparently Rev A models are known to have both the 5-pin and 8-pin video ports (the -01 model most definitely has a 5-pin,) with the former being earlier in its life and the latter still not carrying the separated luma/chroma signals. Note that Rev C boards of the 326298 artwork are also marked with the 1982 year. Convoluted AF (as the kids would say.) 1 Quote Link to comment Share on other sites More sharing options...
carlsson Posted February 3, 2020 Share Posted February 3, 2020 When the topic is about Commodore computers, all kinds of crazy combinations of chips, motherboards, cases, sockets or no sockets etc are possible. Use what you have on hand, as long as it works the customer will be none the wiser. Quote Link to comment Share on other sites More sharing options...
Mehridian Sanders Posted February 4, 2020 Author Share Posted February 4, 2020 Wow... 17 hours ago, carlsson said: When the topic is about Commodore computers, all kinds of crazy combinations of chips, motherboards, cases, sockets or no sockets etc are possible. Use what you have on hand, as long as it works the customer will be none the wiser. This I totally believe. 18 hours ago, OLD CS1 said: Good golly they went to town on that thing! I looked more closely at your photo and you have a Rev A board. This is the second revision of the first commercial main-board. It seems to be the most prolific of the revisions. The history is hazy for me on this -- I have a silver badge with the 5-pins but, much to my shame, I do not know the board revision OTTOMH. Given the revision and is pervasiveness, I have read elsewhere that it is not impossible that it was actually made later than 1982 (the sticker on the cartridge port may indicate 1984) and populated with chips in '85 for final sale. As well, apparently Rev A models are known to have both the 5-pin and 8-pin video ports (the -01 model most definitely has a 5-pin,) with the former being earlier in its life and the latter still not carrying the separated luma/chroma signals. Note that Rev C boards of the 326298 artwork are also marked with the 1982 year. Convoluted AF (as the kids would say.) Convoluted is ... apt for a description. On your board revision..... OTTOMH ... 8 MH ... hmm I look for meaning in the most inane things.... 8 Multi-power Hog. I'm spit-balling I found this today : https://github.com/Larswad/uno2iec/wiki/About-Uno2IEC,-the-Arduino-1541-emulator-Wiki-and-HowTo ... so darn simple to do. I get to do more soldering !!!! I am actually excited about this lol. Quote Link to comment Share on other sites More sharing options...
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