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| FINALLY! Got it to work. 512K Mac with Internal SCSI! |
Posted by: olePigeon on 2015-11-23 17:14:45
I finally got my hack to work. This will also work with a 128K. 🙂
I have some sort of SCSI upgrade I found in that huge lot I helped acquire. It sits on the ROM slots, then you put in 2 512KE or Plus ROMs.
I have been playing with this off and on for the past year or so with little success. It would always corrupt the drive after booting the first time.
I seriously have no idea why it works now. It could be related to termination. I did put a battery in. It's tapping off the mains (I simply soldered a power cable.) Perhaps it was getting corrupted because of a drop in power? No idea.
In any event, this is probably the fastest you'll ever see a 512K boot.
Check this out! :lol:
https://youtu.be/Wg4-VJoQe5w
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Posted by: Elfen on 2015-11-23 17:55:17
I used to have a couple of those with a Dove add-on memory board. Loved them!
Sounds like you had corroded pins on the SCSI/ROM chips that loosened up over time with you fiddling with it. Glad it works! Congrats.
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Posted by: olePigeon on 2015-11-23 18:33:00
Perhaps the sockets were rusty. I actually replaced the pins because a few them were broken off.
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Posted by: CC_333 on 2015-11-24 11:17:25
This is neat!
c
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