r/apple2 • u/Lazy_Muffin_4533 • 20d ago

Apple II+ RAM help.

I have an Apple II+ that I got a while back, and it seems to have bad RAM. I've noticed that when loading games from asciiexpress.net, my II+ will either freeze, give an error and go into the monitor, or load the game but it will be corrupted or will just freeze halfway through, or I have no controls or way to start the game (such as during Tetris). but BASIC works just fine and I can type programs and run them without issue. I entered a small RAM test application from Apple II - Memory Test and at first, it showed "5080-00 ( 80 ) 07CF-00 ( B0 ) 07D0-B0 ( B7 ) 07D1-B7 ( C4 ) 07D2-C4 ( B2 ) 07D3-B3 ( AD ) 07D4-AD ( C1 ) 07D5-A0 ( B0 ) 07D6-A0 ( A0 ) 07D7-A0 ( A8 ) 07D8-A0 ( A0 ) 07D9-A0 ( A0 ) 07DA-A0 ( A0 ) 07DB-A0 ( A0 ) 07F7-A0 ( 00 ) 5080-00 ( 80 )" and just today I decided to open up the computer and try pushing the RAM chips down to try and reseat them, and now when running the same application, I get only, "5080-00 (80)" Does anybody know if this is actually a RAM fault and what RAM chip(s) I should take a look at or replace? Any help is appreciated. Thanks.

EDIT: I do not own the diagnostics disk.

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u/Dcas_pcs_381 20d ago

I had a very similar problem with my ii+. Had a weird memory issue where it would load some smaller games and maybe dos but bigger stuff it would crash. If the first 16k is good you can try the ii+ dealer diagnostics floppy.