PAL codes needed! / Mac Rebirth Project
Grant Stockly <[email protected]> Fri, 21 Jan 2005 10:01:17 -0900
| Newsgroups | gmane.os.openbsd.mac68k |
|---|---|
| Message-ID | <[email protected]> |
I am desperately looking for schematics and PAL chip documentation for the 128k, 512k/e, and Plus. If you have any idea where I can locate these, please let me know. I am mostly looking for fuse map files for the 6 PALs on either the plus or the 512k/128k. PALs for the 128k are just as good as the PLUS. There is only one PAL different from the 128k to Plus, and I have a better version anyway. My hotwired 512k mac has 4MB ram and a scsi port, runs 23% faster than a classic and runs at the same clock speed. E-mail me if you're interested in the pictures. :) I have this schematic, http://www.digibarn.org/collections/diagrams/mac-512klogicboard/index.html And have ordered the two sets of schematics available from http://w3.trib.com/~rollo/ PAL information from http://www.mactech.com/articles/mactech/Vol.01/01.11/PAL/ I do not have any other schematic/PAL information other than above, so feel free to add to my brain. :) PLEASE!!! ;) My goal is to replace all the ICs in the mac with current versions, get it to run on a protoboard, and then replace the processor with the "code compatible" 68HC020. I found minix for the mac plus, but never tried it because the fact it ran within OS6 makes it seem like a joke. I'm interested to know what kinds of modifications I would need to make at the 68020 stage to make this custom computer run Net\OpenBSD. Something with not having an MMU on the 68000 I guess. Another goal is to have a computer that anyone who can handle .1" spaced lead soldering could build. These days kids in a robotics club get a 1GHz SBC for $250, run windows XP on the thing with visual basic. Do I need to say more? :o| 1st Stage - Condition video signal for VGA multisync monitor (relatively easy) 2nd Stage - Replace all ICs with new higher speed CMOS equivalents (16MHz, compared to 8MHz) 3rd Stage - Build computer on protoboard 4th Stage - Replace processor with 68020 5th Stage - MMU? If you've read to here, you're probably interested. ;) Send me an e-mail and I'll notify you when I have the discussion forum up. Thanks, Grant