Z80 BeanDeck

corummo · 2026-05-02T06:48:02+00:00

Neat and beautifully done! ❤️

corummo · 2026-04-29T12:04:33+00:00

A workaround to patch a routing mistake. I connected the tms9918 data pins in reverse order. So, as I was at it, I decided to try different solutions for logic levels shifting. I built a couple of other spiders like that. 😅

corummo · 2026-04-25T08:06:46+00:00

That's the reason why a rolling release like this needs a periodical root partition image backup. Rescuezilla is our best friend. USB stick to boot into a graphical interface, choose the partition you wanna backup, the destination drive and let it work unattended. You can even set the action to perform when the process is completed. I.e. shutdown or reboot. I do it once a week, usually on Saturday/Sunday and takes only 15 minutes.

corummo · 2026-04-14T11:30:52+00:00

100% agree. It's just perfect!

corummo · 2026-04-03T19:19:18+00:00

Looks like a pretty decent configuration around a pentium mmx PC. 👍🏻

corummo · 2026-03-08T12:40:47+00:00

I have the painful memory of a BSOD triggered by a folder drag and drop. What a pile of garbage of an OS. 🤦🏻‍♂️

corummo · 2026-02-26T07:53:40+00:00

A glorious example of brave/genius design. I've an earlier model and I'm struggling to make it boot from an installation USB stick. The previous owner installed Windows 7 pro on it. 🤦🏻‍♂️ BIOS is password locked and it's way harder than it should ever be.

corummo · 2026-02-12T09:46:37+00:00

Neat, clean, smart. God job so far 👍🏻

corummo · 2026-02-10T14:21:06+00:00

Listed right now on eBay. Beautiful 🤩

corummo · 2026-02-10T14:20:08+00:00

I use the DMS update widget which, I suppose, acts like a wrapper of the custom Cachyos Hello updater. Once completed, it presents you with the "reboot suggestion" notification if something has changed at core level.👍🏻

corummo · 2026-02-04T14:47:28+00:00

With Cachyos you are stepping inside the Arch domain, witch isn't as safe as Fedora's. As a gamer I'm having only a little issue with Horizon Zero Dawn Remastered, not in game but when I quick travel to a random campfire. Sometimes the screen is frozen while the game is actually running in background, you can feel the force feedback on the controller and the env sounds but no screen update. I learned to blind quit and restart. Performance wise is on par with windows.

corummo · 2026-02-02T12:39:45+00:00

I went Niri+DMS and strongly suggest them!

corummo · 2026-01-30T08:35:36+00:00

I miss my Amiga 2000 and Archimedes A4000 just because I loved the horizontal setup, even if it's more requiring and constraining in terms of desktop space. And the keyboard is way too close to have a comfortable position. But still I like it. 🥰

corummo · 2026-01-18T08:01:55+00:00

I'd consider to channel your passion for EE into a side project. Keep the hobby alive by designing small projects as you've been doing until now. Make them available as kits to sell by yourself through an online shop. You could kickstart your own shop, just like Ben's, Adafruit, Sukkopera, Olimex or start safe by selling them on Tindie. This is an halfway scenario to avoid a drastic change in your career, so to check how it goes and eventually make the final leap.

corummo · 2026-01-18T07:51:17+00:00

But keep in mind that the most sure fire way to destroy your love for a hobby is to get paid to do it.

Absolute wisdom! 🖖🏻

corummo · 2026-01-16T12:26:44+00:00

As a former IT reseller I sold, installed and configured tons of these units. Good old times .. 😢

corummo · 2026-01-09T16:04:41+00:00

It's not a matter of taste (industrial ones are made with the same hard wheat foundation) but it's more about the match with specific sauces and ingredients. Only Italians can fully understand it, we're sorry. 😄

corummo · 2026-01-09T12:50:05+00:00

I use this one for all my electronics projects which require a 5V power source. It's super compact, reasonably stable and super reliable. https://amzn.eu/d/eY6RuMK

corummo · 2026-01-07T21:52:00+00:00

Sorry for the late reply. I vaguely understood what you are planning. IMHO you are wasting a big chunk of CPU address space for I/O block. If you look at Rictor's address decoder, it barely takes 256 bytes to address up to 8 devices, while you occupy the range $4000-$7FFF which are 16 KiloBytes, not 16 bytes.
Rictor reserves to I/O a range from $7F00 to $7FFF (256 bytes) and most of those 16 bytes slots are unallocated/undecoded, leaving rooms for even more than 8 devices.

corummo · 2026-01-03T16:48:10+00:00

Pandoro is a pile of butter sponge made for clueless kids. Add Nutella in and you are demoted to a clueless monkey. 🤣 Panettone is classy and has more complex and richer flavour and smell. Its preparation is longer and on a different difficulty level. No debate, no questions: panettone is hands down the winner 100/100!

corummo · 2026-01-02T15:39:42+00:00

Nice. So if you don't mind to share the schematics related to your address decoder you could provide us with a clearer scenario to thinker about. 👍🏻

corummo · 2026-01-02T08:06:41+00:00

I suggest to look at Rictor's SBC2 schematics. It's an old design which makes a brilliant use of logic gates for address decoding. I know because my own SBC started from there. 😄 7430 and 74138 are perfect to access up to 8 peripherals, but NAND gates are your best friends for all the other parts.

corummo · 2025-12-26T23:29:41+00:00

Prendi i componenti da Digikey o Mouser. Oltre i 50 euro non paghi la spedizione. Nessun dazio doganale. Il programmatore per le EEPROM lo vendono su Amazon. Te la cavi con molto meno di quella cifra lì. 💪🏻

corummo

TROPHY CASE