Bloodnose Posted February 19, 2017 Share Posted February 19, 2017 Using "Master Diagnostics IIe" (Diags2E.dsk from http://apple2online.com/web_documents/diags2e.zip)performing the "Motherboard ROM test" I receive "F8 Rom Sec is BAD". I assumed this ROM was contained in the EF ROM chip, and swapping the chip with one from another board (same ROM part 342-0134-A) results in the same error. The motherboard is a 1982 unenhanced Rev B, original chips. I could not find documentation for "Master Diagnostics IIe". Might this ROM code be located in another chip? In case of a false positive report from this software, is there another utility known to test ROMs comprehensively? Apple's "Apple IIe Diagnostics, V2.1" doesn't report an error during the "ROM/ CPU Test". The system otherwise operates normally, except for the random wonky lock-up or dump to the monitor. Quote Link to comment Share on other sites More sharing options...
trash_44fr Posted February 24, 2017 Share Posted February 24, 2017 Hello Bloodnose, Using the Master Diagnostics IIe image in an emulator, I experienced exactly the same behaviour with an unenhanced //e. The ROM test is okay with an enhanced //e so your Apple is probably ok. You can try the XPS diagnostics which works great with an unenhanced //e (but not with an enhanced one). Quote Link to comment Share on other sites More sharing options...
Bloodnose Posted March 2, 2017 Author Share Posted March 2, 2017 Thank you for the emulator idea. It is a good comparison. XPS diagnostics only tests the C0 and E0 ROMs. I will keep looking for a diagnostic tool that is more comprehensive. Quote Link to comment Share on other sites More sharing options...
Bloodnose Posted March 2, 2017 Author Share Posted March 2, 2017 Thank you for the emulator idea. It is a good comparison. XPS diagnostics only tests the C0 and E0 ROMs. I will keep looking for a diagnostic tool that is more comprehensive. I found the "APPLE ][ DEALER SERVICE PROGRAMS" ftp://ftp.apple.asimov.net/pub/apple_II/images/disk_utils/diagnostics/Apple%20%5d%5b%20Dealer%20Service%20Programs.dsk which tests the F8, and it passes. 1 Quote Link to comment Share on other sites More sharing options...
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