Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!agate!helios.ee.lbl.gov!ux3!beard From: beard@ux3 (Patrick C Beard) Newsgroups: comp.sys.mac Subject: Re: The QUESTION Message-ID: <3950@helios.ee.lbl.gov> Date: 13 Oct 89 08:37:00 GMT References: <862@gtisqr.UUCP> Sender: usenet@helios.ee.lbl.gov Reply-To: beard@ux3 (Patrick C Beard) Organization: Lawrence Berkeley Laboratory, Berkeley Lines: 80 In article <862@gtisqr.UUCP> kevin@gtisqr.UUCP (Kevin Bagley) writes: > > I've asked The QUESTION before with no response. > > Is this a frequently asked question that everybody is afraid to > answer because the net might be swamped with Follow-ups? > > It seems like somebody should know the answer. Is this Top McSecret? > > The QUESTION: "What EXACTLY does the code below the sad mac mean." > __________ > / -------- \ > | | x x | | > | | __ | | > | | / \ | | > | -------- | > | ---- | > \__________/ > > 0F000020 <- This is just an example > > If you KNOW the answer to The QUESTION... > Please POST your reply, because I have been swamped with requests > to supply this info to others. > >-- > _____ Kevin Bagley Global Technology Mukilteo WA 98275 (206)742-9111 > )__) _ _ _ UUCP:uw-beaver!uw-nsr!gtisqr!kevin > _/__) (_(_(_)_/_)_ ARPA:uw-nsr!gtisqr!kevin@beaver.cs.washington.edu > ____________/ Disclaimer: "I did not say this. I am not here." --------------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 ------------------------------------------------------------------------------- - Patrick Beard, Macintosh Programmer (beard@lbl.gov) - - Berkeley Systems, Inc. "..............Good day!" - Paul Harvey - -------------------------------------------------------------------------------