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Macintosh IIfx logicboard recreation

warmech

Well-known member
I've been waiting for a long time for this to come to fruition and, I have to say, you have absolutely gone above and beyond once again, sir. I just about lost my mind when I saw the repo updated the other day in GitHub, lol. My IIfx can finally live again and that makes me so very happy.

Kudos, sir - this is absolutely amazing work!
 

olePigeon

Well-known member
@Bolle Just out of curiosity: when working on the board, did anything obvious stand out as to why C1 tends to blow on the original IIfx board?
 

Bolle

Well-known member
And finally took some time to do some boring work and cleaned up the schematics.
Those will probably help anyone troubleshooting a real or reloaded board.
 

Attachments

  • Macintosh IIfx schematic.pdf
    8.3 MB · Views: 83

pezter22

Well-known member
Wowza! I have two battery bombed boards and would love to try transferring my good parts onto a recreation board. I was never able to get past the Death Chime on them. I'm guessing internal layers were damaged near RAM bank A from a combination of battery and capacitor vomit.

Incredible work.
 

68kPlus

Well-known member
This is amazing! Love this seeing this sort of work. Even my Mum was impressed and she doesn't even know how any of it works.
 

pezter22

Well-known member
I ordered the boards today from JLCPCB. I have two battery bombed boards I will be using as parts boards. Should be a fun project.
 

Callan

Well-known member
I'm not sure if they're requiring you to get 5 or not, but If so I'd be interested in one if your selling the extras. If not, if anyone has a spare iifx reloaded pcb they want to sell lmk.
 

nyef

Well-known member
I may also be interested in a board or two as well, given what happened last time I tried to use my "working" IIfx (spoilers: it wasn't anymore).
 
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