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May seem obvious, but when I need to disassemble anything nowadays, I take a lot of pics at every stage. Makes it a lot easier to figure out where those little extra bits came from
Plus with my eyesight as it is, I can also zoom into the picture and actually see what I am taking apart...
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Pics are on my list, as will the webcam pointed at the board.
Andreas Mertens wrote: Plus with my eyesight as it is, I can also zoom into the picture and actually see what I am taking apart...
I know that feeling! 3 pairs of glasses now: walking, reading, and computer ones...
But I also have one of these: Draper 80503 22-Watt Fluorescent Magnifying Lamp: Amazon.co.uk: Lighting[^] but mine is 20 of years old now. Damn useful for soldering as well!
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
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When I ask a question, I have to refresh my browser to see if anyone has replied.
On most sites you can get an Email Notification when someone posts to your question.
any help appreciated
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Here it also works this way...
Have you provided a good mail address?
You should receive a mail each time someone answers you.
You can see a number top/right just near your user name with the number of unseen answers to your posts.
And you can do what you are doing, but...
check in your user name you settings and there the newsletters and emails configuration...
Hope this helps.
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Thank you. You were right about the email address. I had a typo in it.
Thanks a lot for your help
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You are welcome!
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Right under the textbox where you enter your question, there's a checkbox with the label "E-mail me if someone replies to this message".
I wanna be a eunuchs developer! Pass me a bread knife!
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So there's this commercial that says "Don't drink or smoke."
I drink once in a while so I had to start smoking
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It's like the London Underground where escalators have signs saying "Dogs must be carried". This is a problem for those of us who don't have dogs.
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Yeah, there used to be ads saying "always have safe sex" -- yeah, let me find a partner first.
Or "always drink responsibly" -- how does that make any sense?
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PIEBALDconsult wrote: "always have safe sex" -- yeah, let me find a partner first. Just find a safe, threesomes aren't required
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I never smoke, so I can drink whenever I want.
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The title is a question, the answer is "yes, please"
Bastard Programmer from Hell
If you can't read my code, try converting it here[^]
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OP!
No longer spotless ...
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Here in the Untied Snakes, I've seen several grocery stores that have a big sign at the entry that says "Service animals only".
I'm retired. There's a nap for that...
- Harvey
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... until the job is done. Came home from work, only wanted to take another look at my project and ended up routing the circuit board from scratch. Again its the middle of the night, but I now have a first complete version. Electrical checks and layout checks are green, but I will still have to check everything for logical errors before I can have the board manufactured. And there also still is the tiny matter of writing the firmware while waiting for the board to arrive.
Here is a picture[^]
We are the Borg. Resistance is voltage divided by the current.
The language is JavaScript. that of Mordor, which I will not utter here
This is Javascript. If you put big wheels and a racing stripe on a golf cart, it's still a f***ing golf cart.
"I don't know, extraterrestrial?"
"You mean like from space?"
"No, from Canada."
If software development were a circus, we would all be the clowns.
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Thru Hole Forever!
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The graphics chip, the CDP1861, is out of production since the early 1980s. All the other parts are still in production and available as SMD, so I could save a lot of space. Space is not much of a problem, but manually soldering is. All parts are CMOS (the 74LSXX logic ICs are actually going to be 74HCTXX), so I prefer to have sockets in case I zap one. Also, this way I can first test the board with empty sockets and then add the ICs group by group and measure the signals.
This is my plan:
- Check the entire schematic for logical errors. Twice, better three times.
- Order the board and parts
- Assemble the board, still leaving the sockets empty.
- Check the voltages and look for shorts.
- Add the logic ICs, now we should have a clean clock signal.
- Add the processor and the EPROM with a small test program to blink the LED.
- Add the RAMs and expand the test routine in the EPROM with a memory check.
- Add the graphics chip and expand the test routine to put something on the screen.
- Add the IO port and test the communication with the host computer.
- From here on it's just a matter of developing the software in the EPROM, so that the host can comfortably send graphics commands over the IO port and leave all the dirty work to the processor on this graphics card.
35 years ago I would have commited serious crimes to get my hands on something like this.
The language is JavaScript. that of Mordor, which I will not utter here
This is Javascript. If you put big wheels and a racing stripe on a golf cart, it's still a f***ing golf cart.
"I don't know, extraterrestrial?"
"You mean like from space?"
"No, from Canada."
If software development were a circus, we would all be the clowns.
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What, you're not laying it out with precision tape and copying it to photoresist yourself? Slacker...
Since the image doesn't render for me, I can't see what you're making, but it sounds like "good old days" to me. Have fun!
Will Rogers never met me.
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Photoresist? Are you joking? Draw the layout directly onto the copper with an acid proof pen. Those were the days.
The language is JavaScript. that of Mordor, which I will not utter here
This is Javascript. If you put big wheels and a racing stripe on a golf cart, it's still a f***ing golf cart.
"I don't know, extraterrestrial?"
"You mean like from space?"
"No, from Canada."
If software development were a circus, we would all be the clowns.
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We are the Borg. Resistors are futile. You will be integrated.
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
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I can only reply with a quote from Darth Vader: No disintegrations!
Edit: Darth seems to agree with the Borg and I wonder if his suit is compatible with Borg tech.
The language is JavaScript. that of Mordor, which I will not utter here
This is Javascript. If you put big wheels and a racing stripe on a golf cart, it's still a f***ing golf cart.
"I don't know, extraterrestrial?"
"You mean like from space?"
"No, from Canada."
If software development were a circus, we would all be the clowns.
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Damn, that's old school....
Looks pretty nice. What was the software used, Eagle?
Ken
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Yes, it's Eagle, courtesy of my boss who does not mind that I take his notebook home and make some stuff for my old computer.
And yes, it is old school. You have to be very lucky or find some chip collector to get the CDP1861 graphics chip. Other parts, like the CDP1802 processor or the CDP1851 IO port are still in poduction and relatively easy to get. The real retro guys would of course be offended because I did not go all the way and got some original parts from 1976 in their white ceramic packages.
The language is JavaScript. that of Mordor, which I will not utter here
This is Javascript. If you put big wheels and a racing stripe on a golf cart, it's still a f***ing golf cart.
"I don't know, extraterrestrial?"
"You mean like from space?"
"No, from Canada."
If software development were a circus, we would all be the clowns.
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I just posted this in Weird & Wonderful[^]
I wrapped the code in PRE tags, yet the code looks unformatted. Anyone else seeing this?
Amy I doing it wrong?
If it's not broken, fix it until it is
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