m.tiernan@pro-angmar.UUCP (Michael Tiernan) (04/13/89)
> CS-ID: #7243.user/apple@pro-angmar 686 chars > Date: Wed, 12 Apr 89 03:32:17 EST > From: obsolete!wack%louie.udel.edu (Andrew Wack) > Subject: Still looking for GS self test error codes. > > A few days ago I posted that my GS died and that when I invoked the > self test I got an error code 01061600, and I asked if anyone knew > what that meant. One person replied that they thought the codes were > in the GS owners manual, but all it says is to contact your dealer > (of course). I'd really like to know what this means, since if it > is something I can replace myself (CPU, sound chip, ram, IWM [yes I > realize the last two are soldered in place and not in sockets]) I'd > rather do that and save my self some money (read: starving > college student). > > So can anybody help me? Keith? Somebody else from Apple? In Michael Fischer's "Apple IIgs Technical Reference", on page 213 it says: ".... A total of 11 different tests are conducted. ..... These tests, their test number, and the ROM location where each test is found are listed in table 7-9. # Test Name Location ----------------------------------------------- 1 ROM Checksum $FF/7CAE 2 RAM 1 - Moving inversions $FF/776C 3 Softswitches $FF/7A58 [There's more but we've passed what's important] Just before each test is run, its test number is displayed on the screen as a long integer value. The first byte is the test number and the remainder of this value is zero. .... [More not included] ... The remaining portion of the value is the error type. .... The first test the ROM checksum. This routine checks the contents of the system ROM (Banks $FE-$FF), performing an exclusive OR with each byte. It then compares this value with the specifed value for the checksum. [More bs but the second byte is the faulty checksum error]" I hope that helps... << MCT >> BCS Apple/Connection (617) 893-5681 [MCT] AppleLinkPE M Tiernan GEnie M.Tiernan obsolete!pro-angmar!m.tiernan@bloom-beacon.mit.edu obsolete!pro-angmar!m.tiernan@bu-it.bu.edu pro-angmar!m.tiernan@obsolete.uucp m.tiernan@pro-angmar.cts.com