Newsgroups: comp.sys.apple2 Path: news.weeg.uiowa.edu!news.uiowa.edu!hobbes.physics.uiowa.edu!math.ohio-state.edu!howland.reston.ans.net!wupost!waikato!comp.vuw.ac.nz!actrix.gen.nz!dempson From: dempson@actrix.gen.nz (David Empson) Subject: Re: Error codes Message-ID: Organization: Actrix Information Exchange References: <2qh7l2$6vq@news.ysu.edu> Date: Tue, 10 May 1994 12:40:24 GMT Lines: 54 In article , Joe Busnengo wrote: > >Where is the //GS built-in test documented and the error codes explained? > > > >I've looked through every reference I have and no luck. > It's documented in one of the IIGS tech notes. I don't have the > index on disk anymore, but I'm sure someone else can tell you exactly > which one it is. It is IIgs Technical Note #95 (TN.IIGS.095), "ROM Diagnostic Errors". One point I should mention here, since it seems to come up so often: if you have a ZIP GS installed and enabled, the IIgs will _always_ fail some of its diagnostic tests (the ones that test the processor speed and use the processor to time hardware interrupt sources). This is noted in the ZIP GS manual. The tests that fail are 0Bxxxxxx and 0Cxxxxxx. If the "counter delay" is disabled (SW1-4 ON) then the IIgs will also fail test 05xxxxxx. If you want to run the test properly, you must disable the ZIP GS, by turning the computer off, setting SW1-6 to the OFF position, then powering up again and running the self-test (by holding down both Apple and Option). Here is the key information from the technote. If the IIgs fails one of its tests, an 8-digit hexadecimal number is printed. The first two digits indicate the general class of the failure (the test number), and the remaining digits provide more information. The failure codes are: 01xxxxxx ROM failure (or RAM failure if the last two digits are 01) 02xxxxxx RAM failure or ADB tool call error 03xxxxxx Soft switches and state register 04xxxxxx RAM address failure or ADB tool call error 05xxxxxx Speed error 06xxxxxx Serial port failure 07xxxxxx Clock failure 08xxxxxx Battery RAM failure 09xxxxxx Apple Desktop Bus failure 0Axxxxxx Shadow register failure 0Bxxxxxx Interrupt failure 0Cxxxxxx Sound failure (Ensoniq or RAM access) See the technote for full details. -- David Empson dempson@actrix.gen.nz Snail mail: P.O. Box 27-103, Wellington, New Zealand