Whether the comparator can be factored out or not, I'm done buying parts. It would be more cost-effective to buy a kit at this point. It's not as though I need to "learn how computers work" or anything like that. I maintained a transistor computer in the Navy. Troubleshooting faults at the ...

As for blocking ports - take the opposite approach and block everything. then open just the ports you want.
My firewall (UFW) and router already do that by default.
I don't think many (if any) ISPs do implement port blocking in the UK....
It's a whole different ball game in the US. American ...

A threat mitigation outfit called VisionHeight has taken a sudden interest in that port for some reason. Opening a port on my PC is more of a risk to me than to anybody else, and I haven't consulted with this VisionHeight. No idea what's up with that, but scanning people's ports uninvited is a good ...

I went with SiteGround because I'd previously had problems with uptime and sluggish transfers on cheap hosts. It's a very good host, probably the best, but you pay for what you get.

I don't think a Raspberry Pi on residential broadband will have any difficulty with an old school BBS. They used to ...

I was rummaging through my vast archives of old code today, as one will, when I found that I've already written the file server and download client for the proposed online facility.
I tested the file server and downloader parts of this package with a dynamic DNS service, and found it to be working ...

It's either that or the HC866. I'm not buying any more comparators, nor making any more substitutions.

I was under the impression that when people throw recommendations for individual parts out there, they're taking into account the other parts it will have to play with.

I forgot to mention that the Arduino will also dim the TFT backlight and has its own power management features. So it won't be running full blast all the time.

I placed my Mouser order for the parts needed to facilitate a successful build. I take advantage of quantity discounts on 74xx and the like ...

While either method would somewhat reduce power dissipation, I have to question whether it would be enough to offset the power that would be consumed by the logic that is monitoring the clock state.
I presume at this stage that the Arduino Nano ESP32, a 3.3V device, will both stop and restart the ...

Now that I'm buying the WDC chip, this bit of advice comes into play:
All the 65c02's can be stopped indefinitely with Φ2 high, unlike the NMOS 6502's. WDC's can be stopped in either phase, and stopping with Φ2 low would probably be good for keeping things de-selected (or at least outputs disabled ...

DigiKey has the 74FCT521APC in DIP, if you're willing to pay $314 for 198 of them.

And, believe it or leave it, I even found an Arduino driver for my I2C stereo volume control. 8)
This library was a dud. The author wrote his own I2C driver, which hooks deep into the AVR architecture, instead of using the standard built-in Wire library like everybody else since the beginning of ...

No worries. Critique leads to a better product. Unfortunately, in the DIY world as well as in the corporate world, the eternal battle between engineer and bean counter continues apace.

Well-commented code is priceless. Maybe I'll adopt the habit someday.

I'm referring to BDD's 26C92 driver when I say that. The design process is thoroughly documented in comments throughout the code. A criticism of code comments I often hear is that they only tell you what you can infer on your own ...

The advice you get is gonna be good but ... not always suitable.
I've no doubt the advice is solid, and I do appreciate it. Thanks!
You mentioned you might want to try an 8Mhz clock.
I'll try it for long enough to see if it works, which sounds like it'll take no more than a few minutes. I'm not ...

I haven't built the computer yet. We've been discussing 688 decoders here for the past 10 days. Nobody said a word about the propagation delay being unacceptable until now.

As far as me soldering any SMT device with one eye, it probably ain't gonna happen. That's just the way it is.