dcc@ncsuvx.ncsu.edu (Daniel Carr) (08/13/88)
when a mac suddenly crashes in the middle of an application and a sad mac
comes up with 02902 code beneath it (no bomb/restart/resume dialog at all)
what could it be?
the mac is a 1 meg plus with an external 800k floppy, no hard drive and
system/software that runs fine on another identical mac.
once i hit the reset button, it rebooted fine...but i have a feeling that it
will happen again.
thanks for any info,
daniel carr
"I steal from the rich and give to the poor, namely me."
-Robin Hoodlum
>>>>>>>>>>>>>>>>>>>>>>>> Daniel C. Carr <<<<<<<<<<<<<<<<<<<<<<<<
>>>>>>> North Carolina State University Computing Center <<<<<<<
dcc@ncsuvx.ncsu.edu netoprdc@ncsuvm.BITNET d.c.carr, GEnietedj@hpcilzb.HP.COM (Ted Johnson) (08/16/88)
>when a mac suddenly crashes in the middle of an application and a sad mac >comes up with 02902 code beneath it (no bomb/restart/resume dialog at all) >what could it be? Me thinks you are missing a digit there, bucko. From my friend's pirate copy of "Mastering Macintosh - For Apple Eyes Only": (I'm only typing in this stuff once, so save this for future reference!!!) --------------cut here---------------------------------------- Sad Mac codes When you turn on the Macintosh or press the Reset programmer's switch, several memory and system diagnostic tests take place. If any test fails, the Sad Mac appears. The code number below it indicates the nature of the malfunction. The first two digits indicate the type of error. If it is a RAM test failure (02, 03, 04, or 05), the last 4 digits identify the suspect RAM chips. You must convert the last 4 digits, which are hexadecimal, to a 16-digit number to learn which chips are bad. If a Sad Mac appears after the disk starts spinning, the first 2 digits of the code number under the icon are 0F, and the next 4 digits indicate the type of error. If you get a Sad Mac with an 0F code, try restarting the Mac with the Option and Command keys held down to rebuild the Desktop file. You may also be able to fix a faulty startup disk by replacing its System file. The error 0F000D most likely means that you have something pressed against the Interrupt button on the progammer's switch. The error 0F0064 means that the startup disk you have inserted into the disk drive is missing the System file. Code Meaning 01____ ROM test 02____ RAM test (Bus subtest) 03____ RAM test (byte write) 04____ RAM test (mod3 test) 05____ RAM test (address uniqueness) 0F0001 Bus error 0F0002 Address error 0F0003 Illegal instruction 0F0004 Zero divide 0F0005 Check trap - CHK instruction 0F0006 Overflow trap - TRAPV instruction 0F0007 Privilege violation 0F0008 Trace trap 0F0009 Trap dispatcher error 0F000A Line 1111 trap 0F000B Other trap 0F000C Unimplemented trap executed 0F000D Interrupt button on programmers switch 0F0064 Bad System file 0F0065 Bad Finder >thanks for any info, You're welcome! -Ted
Mark_Peter_Cookson@cup.portal.com (08/16/88)
That is a bummer. 02092 is a real bummer (assuming I got the last 3 digits right or wrong doesn't matter). 02 is a RAM error, it means you have a bad RAM chip. The last three digits indicate which RAM chip is bad. I think you have to convert the last three digits into binary and then the one that is a 1 is the bad chip. You have to get someone elses opinon on it though. I have a book that could locate the bad chip, but I can't locate the book. But this might be a good time to think about a RAM upgrade.... Mark Cookson
jimc@iscuva.ISCS.COM (Jim Cathey) (08/17/88)
In article <870213@hpcilzb.HP.COM> tedj@hpcilzb.HP.COM (Ted Johnson) writes: > >>when a mac suddenly crashes in the middle of an application and a sad mac >>comes up with 02902 code beneath it (no bomb/restart/resume dialog at all) >>what could it be? >... >When you turn on the Macintosh or press the Reset programmer's switch, ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ IMPORTANT!!! >several memory and system diagnostic tests take place. If any test fails, >the Sad Mac appears. The code number below it indicates the nature of the >malfunction. The first two digits indicate the type of error... If the Sad Mac shows up in the middle of running an application the codes don't mean diddly squat. A wild jump into the ROM could get you anywhere, with anything happening. Those error codes only have meaning when displayed at Reset time, since only then is the proper software in control of the error display routine. In other words, you don't know any more than you did when you started! (Namely it's broke.) +----------------+ ! II CCCCCC ! Jim Cathey ! II SSSSCC ! ISC Systems Corp. ! II CC ! TAF-C8; Spokane, WA 99220 ! IISSSS CC ! UUCP: uunet!iscuva!jimc ! II CCCCCC ! (509) 927-5757 +----------------+ "With excitement like this, who is needing enemas?"