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"Great artists steal" — i.e., concoct your own design with inspiration from existing designs. Consider these examples.

I had issues with 7.6.1 and OS 8.1 above about 45MHz, but no issues at 49MHz with System 7.1. 7.1 is faster anyway, so I am happy to stick with that. With the Mr. Farenheit or Drake 4-chip 60ns VRAM, I could overclock to 49.5MHz, but after a while I would get the dust pixels trailing the arrow...

My book has 250-281. The only thing I don't like about the 1st edition is that there isn't much margin around the text. While I can appreciate they wanted to pack as much test as possible onto the page, it just looks odd with pretty much no margin white-space around the text. Does the...

Eric, I didn't notice missing pages in mind. What pages were missing in yours?

Really? You can PM me if you like, but it's probably best that I describe the 1st ed. book I own in a little more detail... It weighs 1.1kg, but with a box and packing added I suspect it would be about 1350kg. Shipping cost from Japan to Europe (Norway) for that weight would be roughly the...

Also be sure to check out Apple's official intro video of the TechStep, which to my surprise still has a shockingly low number of views on it...

High resolution images of the 4 cartridges I own are shown at the 3:20 timestamp in my video. Specifically, I own these: CPU Tests Vol 1, v 1.1.1 CPU Tests Vol 2, v 1.0 CPU Tests Vol 3, v 1.0 SCSI HD Tests, v 1.0 I only lack CPU Tests Vol 4, which covers the LC III, LC 520, Color Classic, and...

I think this is an amazing project. @jajan547, you are to be commended for spearheading it! For those of you who don't already know what the Apple TechStep is, please know that I made a video about it here. Since there haven't been any posts under this thread since it was started in March...

Folks, here is one amazing example of excellent content that has not gained any traction at all in our forum... https://tinkerdifferent.com/threads/apple-techstep-replacement-roms-cartridges-software-and-more.1023/ No follow-up posts whatsoever! (Okay, I just added my post there.) But his...

You said earlier that you aren't bothered by the number of categories, so does the mean you wouldn't be bothered if the number of categories was reduced?

If there was a Japanese version that might work. It's a bit more complex to do that here in Japan though. :) Even so, I'm still happy with my first edition book. Besides, for all I know, there might be a 3rd edition coming out! ;-)

Friends, I think this is a wonderful discussion. Thank you so much for continuing to share excellent observations and suggestions! I am especially intrigued by what @beeblebrox wrong about "growing the community," and I also appreciate what @Patrick wrote about this forum possibly "driving...

That is perhaps the greater problem to be solved. But I am unsure if one can say that lack of activity is due to a large number of categories though. Thoughts?

Hi, @jcs As I mentioned previously, I am not on the board who makes decides like this, but I did go back and read all posts in this thread just now. I noted 5 people, yourself included, have chimed in to voice support for reducing the number of categories. A few others chimed in to say they...

That matches my findings. My CPU temperature did not increase that much, even without a full heatsink or fan cooling, when overclocking between the said range. I found that quite interesting. You'd think it would and should increase, but it really didn't in any meaningful way. Even so, I...

Interestingly, the CPU which would only clock to 48.4MHz measured about the same temperature as the CPU which overclocked higher, and both were around 60°C in my testing, with only a couple copper RAM heatsinks on them at the time (since I could not use my wired probe at the center of the CPU...

Very true about VRAM chip variations. By the way, the 68040 you kindly shipped to me was able to overclock to a max of 48.4MHz (rock solid stable frequency) in my Mystic when using your 60ns VRAM or Drake's. A second CPU that I purchased from UT Source (also with FPU, but with fake...

I could reach 49.2MHz fairly stabile with Mr. Fahrenheit's 60ns VRAM. With the 2-chip VRAM prototype that Kay shipped to me, which is also 60ns but is a tad faster due to lower latency, I can reach 50.1MHz. (Again, on my LC575 motherboard.)

CPUs take power in spikes. This is why capacitors are very important -- to satisfy the demands of power hungry chips quickly. When you overclock, the demands on the capacitors increase, but if the little resistor inside each capacitor (known as ESR) is too large, the capacitor cannot fully...

51MHz using your new 2-chip 60ns VRAM, or with the Mr.F. or Drake 60ns 4-chip VRAM?