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    paulrickards (paulrickards@mastodon.social)'s status on Thursday, 28-Sep-2023 03:28:36 JSTpaulrickardspaulrickards
    in reply to

    Deep diving into buss error handling by reviewing the previous posts and the Lisa Boot ROM assembly.

    http://bitsavers.org/pdf/apple/lisa/firmware/Lisa_Boot_ROM_Asm_Listing.TEXT

    If I understand this correctly, memory $282 should hold the address that caused the bus error. In my case, I get

    282 0002 0000

    which I think is $020000 (high byte is ignored). Does that mean the problem is occurring at position 128kbytes in the RAM card? Not sure how to map that to a component/components yet.

    #AppleLisaClone #RetroComputing

    In conversationabout a year ago from mastodon.socialpermalink
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