Levas Posted June 11, 2022 Share Posted June 11, 2022 Please identify this apple clone. Still untested, cleaning, washing, checking PSU. Quote Link to comment Share on other sites More sharing options...
TheDevil'sCompass Posted June 12, 2022 Share Posted June 12, 2022 Looks like a Euro clone of some sort. Similar to this one: P1160942.JPG (640×480) (applefritter.com) Applefritter Page: Original Apple 2 motherboard? | Applefritter Quote Link to comment Share on other sites More sharing options...
annuvin Posted June 20, 2022 Share Posted June 20, 2022 it's a unitron clone, I built one exactly like it from scratch. I still have the manuals somewhere. basically it's a complete ripoff of a II plus with a provision to use 2kb or 4kb roms (4kb roms need a jumper) this one has 2732 eproms hence the empty rom slots. Quote Link to comment Share on other sites More sharing options...
Baldrick Posted June 21, 2022 Share Posted June 21, 2022 (edited) 100% it's a Unitron (or a ripoff of a Unitron). Not Unitron from Brasil (that's a completely unrelated Unitron) but from Taiwan. I have two of them here. One that has a sexy blue solder mask and actually says "Unitron" and one that has a green solder mask like yours that does not say "Unitron". Perhaps the green one is a clone of the Unitron (it's very likely a true Unitron since it was installed in a case that bears the Unitron logo), but no matter, both my boards are identical to yours. And they're not exactly identical (they're about 98% identical) to a real II+. There is the notable addition of the 74LS02 at E2 that inverts the enable signal for 2716 (and in your case 2732) EPROMS. They're also notable for being very high quality (unlike many other II+ clones which are pretty janky).You've even got the same black power supply with the red and white label that I do on my two clones. Please note - even those black power supplies have RIFA branded noise suppression capacitors. Some have two of them. Best to replace those right away with a modern equivalent before the explode and stink up your house and put you in the doghouse with your significant other. Edited June 21, 2022 by Baldrick Quote Link to comment Share on other sites More sharing options...
Levas Posted July 6, 2022 Author Share Posted July 6, 2022 (edited) Thank you for the help. Computer is working. And yes, I know RIFA. The picture is from other device. Edited July 6, 2022 by Levas image Quote Link to comment Share on other sites More sharing options...
bradleyb Posted February 16 Share Posted February 16 On 6/19/2022 at 10:04 PM, annuvin said: it's a unitron clone, I built one exactly like it from scratch. I still have the manuals somewhere. basically it's a complete ripoff of a II plus with a provision to use 2kb or 4kb roms (4kb roms need a jumper) this one has 2732 eproms hence the empty rom slots. Did you happen to identify/source the correct power supply connector (or one close to it) when building yours? I have a similar clone but the power connection is just wires soldered on and I'd like to put a real connector on there. Quote Link to comment Share on other sites More sharing options...
bradleyb Posted February 18 Share Posted February 18 Looks like I just figured it out, it's the "V" connector series, from JST: https://www.jst-mfg.com/product/index.php?series=258 Quote Link to comment Share on other sites More sharing options...
bradleyb Posted February 18 Share Posted February 18 After a lot of trying to find a reasonable place to buy those power connectors from overseas, since digikey, mouser, et al don't have them, it turns out JST has a factory in the US, where you can order them: https://gam-gec.com Quote Link to comment Share on other sites More sharing options...
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