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Interesting. The CH340 certainly isn’t a high end chip but I haven’t heard of the issues you describe in the 16 or so heard it’s been on the market

Interesting - can’t seem to find any mention of it

Yes, RS232 allows for up to a 30V swing, plus 15V to minus 15V. The SP3243 used here outputs outputs plus 5V and minus 5V but accepts +-15V on the receiver inputs. Haven't thought about the serial number, but I notice they enumerate differently each time they're plugged in.

I’m quoting the Brittanica article on “hacker” for those.

It won’t be more efficient than Ethernet but it can technically be more practical. If you hook up two modern computers with 100m of RS232 you have an instant low speed connection that requires less setup and code than Ethernet.

Thank you

Thank you 😊

Not sure what you mean? Like controlling a CNC router from 1989 missing a win11 driver? :)

Added to my reading list :)

I try, I try

Full speed for life! :D

No. It only has RS232 physical layer to the UART - so it’s “bring your own” RS485 phy :)

🥸

Actually someone is working on an adapter and software for a GAL. The HV logic and many pins makes it pretty good for more things than I initially thought

Happy hacking :)

No. A T48 is still 50-70$.

@ you’re clearly not looking at the right places. I forget them at that price all day long potentially is in import duty to where you live making the cost go up.

@ Just no. They are not available for 10$. They are $50+ Feel free to send me a link by email - it’s on my profile. What often happens is they list an adapter on the same listing so it looks like the T48 is 10 - but it’s only the adapter.

@ I have multiple that I use that were purchased at that price however if you are not living in the same place as me the link simply goes through page not found so there’s a very low chance that I could even send you a link that will function you can get a lot of things cheaper than you realise in China if you look from the factory themselves

@UKsystems A T48 - directly from XGecu - is 50-70$.

A certain 1983 movie might've inadvertently pushed that connotation :)

@ I really need to get around to watching that!! It’s been lurking on my list of movies to watch for ages.

@@tookitogo It’s good! “At least every three years”-good :)

@ Nice! I’ll try to see where I can find it while being lazy! 😂

Thanks for the feedback. Volume of the music or in general?

@@AndersNielsenAA I don’t find the music excessively loud, but it falls into one of my favorite sayings: “if it doesn’t add, it subtracts”. I prefer tech videos without music.

@@tookitogoSame here

Thank you :)

Etymology 1 From Late Middle English hackere, hakker, hakkere (“one who cuts wood, woodchopper, woodcutter; (rare) tool for cutting wood”), from hakken, hacke (“to cut (something) with a chopping action, hack; to make a chopping action”) + -er(e) (suffix forming agent nouns). Funny thing is - “hakke” still means to chop in Danish, probably rest of Scandinavia. German “hacken” too.

Ah.. Yeah yeah

Ps I am 50% Scandinavian. My maternal granddad was born and raised in Norway. My grandfather’s ancestors were from England. My daughter, whom I call virtually daily, is living in Lakenheath, UK, 7 hours ahead of us here in Idaho. USA.

In the 1980s, I used hacksaws to cut the speaker and LM386 audio amplifiers off the corner of 2400 bps modem cards. Add a 9V battery clip and and a 1/4" jack and you have a guitar amplifier with speaker.

Thank you! Trying hard to make sure we don't forget all those tricks.

:)

Can't guarantee it'll snap that perfect every time

@@AndersNielsenAA Yeah, gotta be honest with that. Snappin' them perfectly is something dependent on the tech gods.

EEPROM - not NAND Flash :) It’s a 74hc04 inverter and a 1MHz active oscillator.

@@AndersNielsenAA Thank you. :-)

I suggest you check out my "Single Breadboard Computer" video - that eventually turns into the 65uino. I do believe that's the minimum you can - reasonably - get away with.

@@AndersNielsenAA Will do. Thank you.

I've one more question. As a beginner. What would you say would be the best/easiest CPU to start with ? I'm leaning towards either the 65c02 or the Z80. ( or maybe even the G65c816P) & I just cant make up my mind lol.

@@Xpun3414 The easiest? I would say the 6502 - specifically the 6507 because it has less pins to worry about.

@@AndersNielsenAA Man. You are awesome. Thank you so much for taking the time to respond & put up with all my questions.

Indeed :) Have a look in the descriptions of some of my newer videos or the GitHub repo.

Absolutely no problem :D

Using an adapter board or bringing 12V out to a breadboard that would be possible - nobody’s written any software to try though.

This relies on the standard JEDEC layout of ROMs and RAMs so it doesn’t do all the other things a T58 does - like testing random logic ICs

Yeah, that's one of the things I had to give up by not having drivers on every pin. But it does mean this is faster (if it wasn't running on a 6502 or an Arduino Uno at least) and cheaper. Maybe bidirectional registers would solve it, but they'd also need over current protection ... some 74'XX's burn in half when they fail XD

Sounds cool about the pinball machines! I don't have any assembled units to sell you, but you skipped over why you want to skip the soldering? I'd like to hear more.

Also not great to open a drawer full of mercury dust when you get it in the mail.

Both software and hardware. $9.

​@@AndersNielsenAAGreat, thanks. If future versions could also support 1.8 to 3.3 volts, that would be great, as it would make the device suitable for programming serial EEPROMs and microcontrollers. This would significantly expand the range of potential applications.

Thanks for watching :)

Thank you! :)

Thank you!

Yes!

@@AndersNielsenAA great thanks.

In the video I also use a ZIF in a normal socket :)

@@AndersNielsenAA I'm going blind, so all I saw was a very fuzzy board drifting across the screen, over and over so I didn't finish it. I used to have a Fordham EP20? programmer on my bench, and we had numerous older progtammers fpr older chops like early PALs. I used them in a production and factory support situation. I also had to clear factor test data from the Dallas 3K=8 batterey backed RAM I loved it when the Capstore memory was devekoped, because tey were not only shipped blankm byut there was no battery to fail. It was two memory chis, a gapaciror and a comparitor. On powerup the EERoM was read into the Static RAM. On powerdown, it was written back to the EEROM Im sure your oard wil interest hobyists, but I quit watching wjen you said to put a better product in the closet. I worked in Broadcast and Telemetry equipmen manufacturing. Programming had to be performed on name brand equipment, and maintained in our Merology lab. I even used the so called programmers for cable TV boxes and security dialers that pulsed a DIP resistor pack to open sselected resistors. I have over 100 pieces of lab grade test equipment in my home shop, after retirement. I won't say anything bad about your design, because I couldn't make out any details.

The main cost cutting measure for the programmer is *mostly* relying on the JEDEC standard layout. That means it can supply some of the voltages needed but you’d need an adapter or jumper signals to a breadboard. And write a programming profile.. Aren’t the 82S’s all (otp) PROMs? Do you have a bag of those? I’d love to get my hands on some :) Firestarter has a database with all supposedly supported ROMs - not all tested for obvious reasons :)

Thanks 😊

I’ve released a video on doing half of it - it’s possible to add the transistors to the configuration jumpers as well

It’s on the literal first page after you tell you’re from the only country in the world requiring companies from other countries to register for VAT. You can probably find older revisions on eBay.co.uk - I’m unsure if “Tim’s Retro” is going to order a batch of Rev2s as well.

Maybe there’s a way - I’ll take a look

It’s a bit out of scope. It would take an active adapter board with an additional address latch.

@@AndersNielsenAA Or its possible to program 40pins with an adapter where you can set the high addresses manually and program in chunks.