Search found 43 matches

by Kai Robinson
Sun Jan 16, 2022 1:32 am
Forum: OTHER 680x0
Topic: Mac Classic - will it ever run again!!
Replies: 319
Views: 25435

Re: Mac Classic - will it ever run again!!

Good news on the classic. @Kai Robinson I believe he is working on a clasic ram board replacement Tom Indeed I'm rather pleased :) Cool, I do have a Simm board that used to work, but has decided not to :( @Kai Robinson are you building a replacement by any chance? https://tinkerdifferent.com/thread...
by Kai Robinson
Mon May 17, 2021 4:49 pm
Forum: OTHER 680x0
Topic: Mac Classic - will it ever run again!!
Replies: 319
Views: 25435

Re: Mac Classic - will it ever run again!!

Ahoy! If you're after a replacement logic board for the classic...well, i have those in production for a test batch now! :)
by Kai Robinson
Sun Mar 28, 2021 11:20 pm
Forum: ELECTRONICS
Topic: Reverse Engineering the Macintosh SE PCB & Custom Chips for 1:1 reproduction
Replies: 33
Views: 18156

Re: Reverse Engineering the Macintosh SE PCB & Custom Chips for 1:1 reproduction

Ooof - a lot has happened since i last posted, for the full story, the project over at 68k MLA will fill in the gaps - but essentially, a respin was needed, after that respin - we managed to get some helpers to look over the sprint layout, as my eyes weren't picking out anything - and 5 really impor...
by Kai Robinson
Sun Mar 07, 2021 4:33 pm
Forum: ELECTRONICS
Topic: TQFP Soldering Gods Required! (PAID WORK)
Replies: 11
Views: 5175

Re: TQFP Soldering Gods Required! (PAID WORK)

The chip covered by the CE/FCC ID sticker is the first known ARM chip used in a Mac - it handles the 040 to PPC bus translation. A lot of people would kill to have the schematics for this thing... No luck finding the IC through anyone dealing with NoS or used - not even UTSource. ppc601-apple-vlsi-a...
by Kai Robinson
Sun Mar 07, 2021 4:28 pm
Forum: ELECTRONICS
Topic: TQFP Soldering Gods Required! (PAID WORK)
Replies: 11
Views: 5175

Re: TQFP Soldering Gods Required! (PAID WORK)

post the pic here for all to see :D Okay - here goes! The Daystar PowerCard 601 Itself, naked without the heatsink - just look at that crack! :o DSC_0530.JPG Closeup of the TQFP PPC601 itself DSC_0531.JPG Backside of the card DSC_0534.JPG Optional L2 Cache Card included, though DSC_0532.JPG DSC_053...
by Kai Robinson
Thu Mar 04, 2021 1:23 pm
Forum: ELECTRONICS
Topic: TQFP Soldering Gods Required! (PAID WORK)
Replies: 11
Views: 5175

Re: TQFP Soldering Gods Required! (PAID WORK)

It TQFP is fine really. You can even do them without a microscope and inspect them after with a magnifier. A hoof tip on the soldering iron, good flux, a microscope and practice make it pretty easy though. On a rare card I'd cut the old chip legs to minimise risk to the PCB removing the cracked pack...
by Kai Robinson
Wed Mar 03, 2021 9:49 pm
Forum: ELECTRONICS
Topic: TQFP Soldering Gods Required! (PAID WORK)
Replies: 11
Views: 5175

Re: TQFP Soldering Gods Required! (PAID WORK)

Well i went halves with a friend and now i own 360 PowerPC 601's - 80Mhz Original's :D

Anyone want a few? :p
by Kai Robinson
Wed Mar 03, 2021 7:20 pm
Forum: ELECTRONICS
Topic: TQFP Soldering Gods Required! (PAID WORK)
Replies: 11
Views: 5175

TQFP Soldering Gods Required! (PAID WORK)

So...i managed to pick up a very rare Mac accelerator - the Daystar PowerCard 601 for my Macintosh LC475 - unfortunately, the main die of the PPC601 is...well, it's cracked. like 1/3rd the way across. Dead. However, i'm seriously a little nutty and want to try and resurrect the card. The chip is a T...
by Kai Robinson
Tue Jan 26, 2021 9:19 pm
Forum: OTHER 680x0
Topic: Mac Classic - will it ever run again!!
Replies: 319
Views: 25435

Re: Mac Classic - will it ever run again!!

I presume you have a copy of the BOMARC Services schematics for the Classic? :)
by Kai Robinson
Tue Jan 26, 2021 9:17 pm
Forum: ELECTRONICS
Topic: Reverse Engineering the Macintosh SE PCB & Custom Chips for 1:1 reproduction
Replies: 33
Views: 18156

Re: Reverse Engineering the Macintosh SE PCB & Custom Chips for 1:1 reproduction

@Kai Robinson when placing images into posts please make sure you attach them and place in-line as opposed to linking to other sites. This way we can make sure the image still exists even if the external site disappears or has issues. I have done the images in question for you in the post above - h...

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