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If you'd be interested in selling either - i'd be keen to reverse engineer the nubus/pds adapter board.

27.000MHz oscillator - it's the input clock for the Zoran ZR36050 JPEG Encoder chip. There's only two valid input values for the input clock on that chip, 21.000 MHz or 27.000 MHz.

Yes, check the 26LS chips as well - not just the trace continuity but perhaps there's a failure somewhere. Did you check all the GND and VCC connections?

Well people in the US could continue buying from pe-connectors, its just that we need distributors for the international purchasers. Perhaps it might also be worthwhile reaching out to show pe-connectors the market they're impacitng directly...?

Not really - some of us migrated entirely away from other forums when TD came into being :)

You can use the 'test' function in Sprint Layout, and the .lay6 file from the SE Reloaded GitHub here https://github.com/kr239/Macintosh-SE-Reloaded to find out where each pin connects to, and to use as a guide to see if you're missing any connections.

One issue you'll find in the SE is that if the SCC isn't playing nice, System 6 works fine. System 7 borks out as it checks the SCC for proper operation. Check the SCC is working correctly and you don't have any trace damage to any of the pins.

For any of the 100nf axials - ANY should do - i bought from eBay before and had 0 issues. For the electrolytic axials...these ARE admittedly getting harder to find as only really CDE make them.

Well i was using Tom Barber as an intermediary for purchasing the connectors in bulk, and @max1zzz has used PE-Connectors stuff before as well - they're made by them, as far as i can tell - good quality - but perhaps someone like @Branchus and @MacEffects might consider reselling stuff from them...

https://github.com/hegars/1M-30pinsimm That's the place for the SIMM Gerbers. OK - two boards, 4 sockets, £20 + postage seem fair?

IC's all on one side? :)

I do have some of the 30-pin SIMM sockets if you need some - £5 for each and postage would cover it :)

Might be worth offering these to bitsavers who can scan them all in and host them?

I do love seeing people build these boards up - i get the warm fuzzies from seeing machines being saved that would have been trashed! The boards really do look good in red, too.

Oooh lovely! I tried disassembling the SE FDHD and early 800k ROM with both IDA and got absolutely nowhere 😂

@cy384 how are you disassembling these ROM's - IDA Pro?

Sure! One sec - what post number are you wanting to break out?

I bought the exact same PSU as this to do to the spare IIci PSU you gave me the last time i was down your way - just haven't got round to it yet. Did you use standard PC Motherboard brass standoffs to affix the seasonic PCB to the case?

I love, love, LOVE the 2 door bricks. Always wanted one to do a T5R conversion on it but hard to find here!

Just to clarify - the SWIM chip is not a ROM or a PLD type device, it's a custom ASIC - not programmed in any way - it just works. Just needs to be soldered to the adapter PCB to be used. The ROM's of course would need to be burned and soldered to the adapters to get the FDHD ROM's working with...