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I guess it depends, I have inquired the possibility before and it was not doable in the US. I have seen hotel policies that state that you cannot get postal deliveries. I suppose they don't want any responsibility for late/missed deliveries, or to become a package storage facility. I should not...

Guests can never receive personal packages at hotels, need to find a local friend for that.

Yes it will work. The thick chips can only go on the bottom as there's no room to put them on the top. Mixing package types is perfectly fine.

Ahaaa well that's neat! thanks for posting that.

Very cool! Well I have reversed the pinout of my 1MB SIMM and found that A9 is indeed connected, so this led me think that 4MB modules should be possible. I have made one, but I also messed up the connection of A9 in my routing. This does not matter for the 1MB module, but it's resulting in the...

A quick message for all those interested in the GWORLD RAM, I have a limited availability at $49 for a pair shipped. You can send me a DM to proceed!

GWORLD RAM was used in other cards, I have these two. I have made an adapter to put GWORLD RAM in my SIMMCHECK, but the 4MB SIMM is seen as a 1MB, so I have to check my design or what could cause the extra address line from being used. I think Apple created proprietary RAM at a time where 30-pin...

I am now making the GWORLD RAM. At the moment the 1MB SIMMs do work and I will have them available very soon. Looking at the documentation is is also possible to get 4MB versions, but as of now I can only get them to be recognised as 1MB so I may need more work.

It's not just eBay indeed, but all online platforms that have to comply. I think eBay is taking a no risk approach though, because you should not need to open a German VAT if you sell below €10k/year, but eBay does bar you if you don't provide them with the number regardless. As for the LUCID...

Howdy, there's a lot of red tape now enforced by eBay to sell in Germany, even if you're within the EU. First you need to register a VAT number in Germany, and then register to the LUCID Verpackungsgesetz and pay for a yearly fee based on the estimate of shipping material trash that will end up...

SE/30 RAM sockets have very bad plastic retention clip and SIMMs can sit loose in them. My SIMMs are slightly thinner (1.20mm) than normal (1.27mm) which does not help on making good contact. They do work in the SE/30.

Schematics would not be very complicated but it would be a lot of work to do the PCB layout, using flash chips of this density require 3.3v, so you'd also need 5V to 3.3V level shifters on the data and address bus.

Getting back to you since you reached out from eBay, it is indeed fairly unusual to have a board without ROM, maybe you have a very early one? Your best chance would be to find a battery bombed motherboard and transfer the ROM from it. I'm not sure there would be a lot of incentives to create a...

Oh that's interesting, yes I don't have the Royal Tech VRM in my machine, still have to move forward with tracing the problem in my design...

That's a sweet little adapter!

I have 3 different models here, they are all interchangeable but they have different power ratings. Note that 040 machines likely needed the higher power output, it also depends of the hard drive and PDS expansion you plan to use, in order not to overload the supply. The -5V rail is generated...

The RAM is actually 16k of cache (MT is cache and IDT is for TAG)

Got these two from a scrapper, so yay for cloning!!!

List can also add RAM for PowerBook 100, 140/145/170, and 160/180 My designs are available on Tindie and on eBay :)

No one is talking about running wires all over the board. The original portable power supply was not very well designed from the start, with instabilities that could send VBat straight to the +5V rail (especially with bad capacitors) and weak current handling which makes it impossible to run it...