68kMLA Classic Interface

This is a version of the 68kMLA forums for viewing on your favorite old mac. Visitors on modern platforms may prefer the main site.

Click here to select a new forum.
Apple IIe Enhanced RAM Error Help!
Posted by: Mr. Macintosh on 2013-11-15 11:40:08 Are those piggybackable with my soldered 4265s?
Posted by: volvo242gt on 2013-11-15 12:02:31 I don't think so. They're a different capacity chip... I'd try to source a Revision B //e board. RAM chips are socketed. Swap over your ROM chips and CPU, then use that instead. -J
Posted by: Mr. Macintosh on 2013-11-15 14:18:55 Wouldn't it be a lot cheaper to just replace the faulty RAM?
Posted by: volvo242gt on 2013-11-15 14:21:48 If you're good with a soldering iron, probably. However, considering how the machines are getting harder to find, it might be a good idea to have an extra board anyway. -J
Posted by: dorkbert on 2013-11-15 15:39:07 I was going to suggest picking up a 64k Aux RAM card with socketed RAM to harvest parts, but a casual glance on fleaBay seem to suggest sellers are all under the influence of illicit substance...
Posted by: Mr. Macintosh on 2013-11-15 16:13:58 Interesting question: if piggybacking really does work, why don't those will little soldering skill simply attach a ram chip on top of the broken one?
Posted by: volvo242gt on 2013-11-15 16:37:45 I was going to suggest picking up a 64k Aux RAM card with socketed RAM to harvest parts, but a casual glance on fleaBay seem to suggest sellers are all under the influence of illicit substance... I think I have one that I could donate to the cause. Re: the illicit substance, it's the "SteveJobsIsDead" substance. Everything skyrocketed when he passed away. -J
Posted by: CelGen on 2013-11-15 19:16:38 Who needs drugs when you have the effects of the Reality Distortion Field? 😉
Posted by: uniserver on 2013-11-15 19:51:24 http://www.youtube.com/watch?v=X0GmhtPxyKM like Michael Jackson, made way more in sales after he passed.
Posted by: david__schmidt on 2013-11-15 20:02:28 Interesting question: if piggybacking really does work, why don't those will little soldering skill simply attach a ram chip on top of the broken one? That would work. You'd want to do a little bit of soldering on all the pins to be sure they didn't let go over time. But if you're in there, fixin' stuff... why not do it right and put in a socket? Besides, one failed. Likely others will follow. If you fix one - you might as well fix them all.
Posted by: Mr. Macintosh on 2013-11-15 20:25:29 The only reason I would think to do this is if either that person has no soldering experience and/or wants to keep the board historically accurate but still be able to use it. As for that 64k RAM card, do those chips really work with my system? I'd be forever grateful for the help if they do!
Posted by: Mr. Macintosh on 2013-11-16 21:29:59 Hey guys, I just wanted to say that the problem has been solved. I guessed RAM 00000001 was actually F6, so I went ahead and replaced that chip with one I got at a local electronics supply shop. I'm very lucky that they had an ample stock of 4264's! I took out (somewhat jankily) the old RAM chip and installed the socketed new one. After days of cleaning every part imaginable, I finally got the "SYSTEM OK!". Thank you guys for all you're help and offers to send me parts, I really appreciate it. To celebrate, I made a little video of the first floppy I tested out: an old UP-TIME floppy disk magazine that happened to include an 8-bit jukebox! You can check it out here :
Posted by: volvo242gt on 2013-11-16 21:32:38 Yay... Congrats on getting the old beast fixed. -J
Posted by: Mr. Macintosh on 2013-11-16 21:36:27 Yeah! It feels good to not have screwed it up permanently AND fixed it to full working glory! Thanks again for all the help.
Posted by: uniserver on 2013-11-17 00:11:57 great job! cool youtube videos!
< 2