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Mac Plus ROM issue [message #277145]

Thu, 01 January 2015 19:07

Thomas Kane
Messages: 1
Registered: January 2015

Karma: 0

Junior Member

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...Ms/ROMS
Folder/
< http://apple2.org.za/gswv/a2zine/GS.WorldView/v2000/Aug/Misc New/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!

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Re: Mac Plus ROM issue [message #277153 is a reply to message #277145]

Fri, 02 January 2015 10:51

Alex Santos
Messages: 58
Registered: December 2014

Karma: 0

Member

Thomas I am currently uploading all the ROMs I have for various Macs. I
will make the link availble as soon as the 100MB are up.

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Re: Mac Plus ROM issue [message #277162 is a reply to message #277145]

Fri, 02 January 2015 10:55

Alex Santos
Messages: 58
Registered: December 2014

Karma: 0

Member

Hi Thomas

Anyone with this link can download, hope this helps out with your vintage
needs.

Vintage Mac ROMs
< https://drive.google.com/folderview?id=0B32C6NlrH1VXYk1YLWxR NDFCakk&usp=sharing>

Mostly the same on Archive.org
< https://archive.org/details/mac_rom_archive_-_as_of_8-19-201 1>

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