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The Z field indicates a failed address line. $0005 The RAM External addressing test failed. Mac emulator codes not working code#The Z field indicates which bits failed as in code $0002. $0004 The RAM test failed while testing bank A. $0003 The RAM test failed while testing bank B, after passing the chunk tested for code $0002. This small chunk of RAM is always in Bank B. The Z field indicates which RAM Bit(s) failed. $0002 The first small chunk of RAM to be tested failed. YYYY Error Codes: $0001 The ROM checksum test failed. The ZZZZZZZZ code contains additional failure information to help track down the problem. Where XXXX is internal test manager state information (ignore this), YYYY contains codes that indicate either an exception code, or the test number for a power on test failure. The new power-on error codes have the following format: On the Macintosh SE and II, the display would appear: Where F indicates an exception occurred, and 3 indicates an illegal instruction occurred. The traditional Macintosh error codes are displayed like this: Generally, the same codes are used for 68000 exceptions as the Macintosh, however they are displayed differently. Mac emulator codes not working mac#The Sad Mac error codes have been changed to incorporate additional power for testing and to support the 32-bit world. ![]() Single Chip Identification Data Bit Location Sub Code BitsĠ064 Couldnt Read System File into Memory Class Code Sub Code 1 = ROM test failed MeaninglessĢ = Memory test - bus subtest identifies bad chipsģ = Memory test - byte write identifies bad chipsĤ = Memory test - Mod3 test identifies bad chipsĥ = Memory test - address uniqueness identifies bad chips In the case of a bad RAM chip, the sub class identifies the bad chip (this was very helpful to homegrown upgraders). The sub class code tells what the error was. The class code tells what part of the diagnostic program found the error.
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