Using "Master Diagnostics IIe" (Diags2E.dsk from http://apple2online....ts/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.
F8 Rom Sec Is BAD 25%.JPG 83.87KB 2 downloads