Hello all. I have a mac plus with a unidentified upgrade board(68030,FPU and RAM) that I recent got from someone who was moving. When I turn it on it gets the sad mac error for ROM checksum.
I pulled the rom chips and was able to dump them okay but I want to compare them to a known good dump and if they have been corrupted somehow, replace them with 27C512s. The problem is I havn't been able to find rom dumps that match the ROM revision I have. I have 342-0342-A and 342-0341-B. EVerything I can find is for the b and c revisions respectivly. I did fine files that are allegedly the same chips as mine here: http://apple2.org.za/gswv/a2zine/GS.WorldView/v2000/Aug/MiscNew/MiscA2ROMs/ROMS%20Folder/ but both files differ after 0x0100 which is suspect. I think they are a different version rather than a indication that mine are corrupted.
Does anyone have a plus with the same version ROM as me? Would you be willing to dump the chips so I can compare them to my dump?
Thanks!
I pulled the rom chips and was able to dump them okay but I want to compare them to a known good dump and if they have been corrupted somehow, replace them with 27C512s. The problem is I havn't been able to find rom dumps that match the ROM revision I have. I have 342-0342-A and 342-0341-B. EVerything I can find is for the b and c revisions respectivly. I did fine files that are allegedly the same chips as mine here: http://apple2.org.za/gswv/a2zine/GS.WorldView/v2000/Aug/MiscNew/MiscA2ROMs/ROMS%20Folder/ but both files differ after 0x0100 which is suspect. I think they are a different version rather than a indication that mine are corrupted.
Does anyone have a plus with the same version ROM as me? Would you be willing to dump the chips so I can compare them to my dump?
Thanks!