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.

Sad Mac code 02FF00

Posted by: mactjaap on 2017-08-15 05:25:48 Testing a Mac Plus motherboard. It bongs, but gives a Sad Mac. Code 02FF00 I was looking at the page about Sad Mac, but I don't get it right. http://www.gla.ac.uk/~gwm1h/Error_Codes/Sad_Mac_Codes.html Is there anyone who can tel me how to read this error and what it is?

Posted by: mactjaap on 2017-08-15 07:06:33 I now see that the RAM is missing. Probably this is a RAM Sad Mac.

Posted by: dochilli on 2017-08-15 07:30:20 02 = Memory Test Bus subtest error FF = G5 to G12 are missing (sum of all bits 0100 to 8000, hexadezimal). I hope I am right... Martin

Posted by: mactjaap on 2017-08-15 12:51:12 It was the missing RAM. I switches RAM from an other Plus and it works. However I would like to know how I could exactly read this 02FF00 error. If I change RAM only for halve I get 02FFFF.

Posted by: mactjaap on 2017-08-17 13:35:58 This is a nice article about missing or corrupt RAM. Fairly new to me but interesting. https://ethandicks.wordpress.com/2013/10/07/adventures-in-retrocomputing-repairing-an-original-macintosh/ I have a RAM error on my Macintosh ED too. 022000. On the Sad Mac site this seems to point to location G10. Not sure how to read this on a DOVE MacSnap card....

1