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@max1zzz thanks so much for the layers of your IIcx Redux. I've reconstructed the traces/chips/pads for the three signals that meander down off NUCHIP in the NuBus section of the Bomarc Schematic. Trying to figure out where ARST, LO0 and HI0 go and what they are doing? Some of the circuit...

Got the NUCHIP .PDF to work!

A little last revision eye candy in the case that NUCHIP injection proves impossible: Clean slate for the Radius IIsi NuBus Adapter rework approach: Form factor is frozen and in the can! Here's proof of fitment and the card I'd be tempted to use if I had 040 Accelerator and GS Cards...

Done playing with form factors, time to get on with the technical hurdles: First approximation: I was hoping that patching the three VIA2 signals to the three reserved pins on the SE/30 PDS would be sufficient. Out of curiosity, are those pins grounded. Can't find my continuity tester ATM...

Just ordered the PGA adapter, so I can get started with manual board layout once I'm sure of the pinout! :) PGA Socket supplier has a $30 minimum purchase, so I've a bit of shopping to do.

I found a couple of interesting tidbits tonight during downtime at work: https://www.proto-advantage.com/store/product_info.php?products_id=4610006 https://www.proto-advantage.com/store/product_info.php?products_id=2620006 I think this might be the right size, less the four corner pins it...

Quick questions: Can't remember what package type NUCHIP would be called? Has anyone seen an adapter from SMT to thruhole for it? Kinda like this one for QFP: https://www.ebay.com/itm/252818521461

Installation of that big cap looks reall ugly, should I assume the board has been at least partially recapped?

De nada. ;) More pics for perusal at work in downtime tonight: @max1zzz any chance you can send me the remaining layers of the IIcx board to use as templates in AI. I won't post any more than the above. I'll ask here as well: NuBus and PDS passthru will be split into a V configuration on...

Yep, this'd be the current Rev. 5 of Project30 over there: https://68kmla.org/bb/index.php?threads/project30-iisi-nubus-adapter-in-se-30-fifth-edition.44861/post-493049 I should get a single slot up and working via the NuCHIP wedge, board production is surplus/damaged donor board limited...

As I said in the other thread ""just for teh "because I can" cred?"" I've always wanted to shoehorn a NuBus card into the SE/30. No practical purpose for it unless someone develops a NuBus Controller. The discrete component NuBus Adapter from Radius would be the obvious approach. 40MHz crystal...

Drat, tried to edit and hit delete? Anyhoo . . . An ancient pipedream got a new lease on life recently at the MLA. I was staring at my beautiful new, black SE/30 board and thinking about one of the IIcx boards @trag has in his hoard for populating his and it finally hit me! SE/30 doesn't...

Thanks a bunch! Tried the fit yesterday and the threads match. Hopefully the head spacing on the half inch end will work out.

Thanks much, ludicrous descriptions of thread specs, but ordered just to see. +-Ordered a pair for $11.55 just in case. The thread spec page is not to be believed! https://antiquelampsupply.com/pages/15-web-nipple-reference

Toolmaking knuckle dragger methodology . . . doesn't get better! :D