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Use it as a decoupler for the plasma relays.
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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I would say it is time to get a new board and solder anything anew... The components (like the ROM) may be in good order, but an old, trembling connection may fry all...
And in any case - do a copy of the ROM content... It may come handy if the ROM dies despite all your effort...
"The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge". Stephen Hawking, 1942- 2018
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Kornfeld Eliyahu Peter wrote: do a copy of the ROM content
In those days they actually were so nice and printed a hex dump of the ROM on the back of the schematic. Still, the first thing I did was to save the content of the ROM onto a cassette tape - using the code in the ROM. When I find the time, I will sample a WAV file from the tape and import the code to my PC. Then I can make a disassembly and extract some code which I am going to need.
First I get my new Elf running, then the old Elf gets an overhaul. 40 year old bus connectors obviously tend to be a little loose.
I have lived with several Zen masters - all of them were cats.
His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.
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Yes, we already know you are a wizard, now you are just showing off. 
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Slacker007 wrote: know you are a wizard
You mean this is not the wizards' guild here?
Nobody here reads books which no normal people can understand?
Nobody here then does stuff which normal people don't understand?
Then no computers do things which normal people don't understand?
Nobody here then comments the results in a way that normal people will not understand?
Nobody here who those normal people don't expect miracles of every day?
Slacker007 wrote: now you are just showing off
Nah. Showing off is just for those normal people. Here I hope to find someone who understands what I'm writing about. 
I have lived with several Zen masters - all of them were cats.
His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.
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Yes we do - but now your doing stuff that we non-normal people don't understand.
There is a limit you know!. (or at least there ought to be).
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Look at a computer magazine from 1980[^] and see for yourself how much wizardry has changed since then. Let me assure you that this used to be fairly common knowledge.
I had this issue back when it was new and read that article about those new shiny 16 bit processors.
I have lived with several Zen masters - all of them were cats.
His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.
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I remember in the days of the Commodore PET, when chips weren't soldered onto the motherboard but were mounted in whatever-you-call-it thingies that it made it easy to replace the chips, every 6 months or so, when something stopped working, I'd lift up the lid and make sure all the chips were fully seated, and connectors given a wiggle, and presto, the problem would be solved for another 6 months or so of thermal cycling. 
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Marc Clifton wrote: whatever-you-call-it thingies
Sockets, perhaps?
I have lived with several Zen masters - all of them were cats.
His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.
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CodeWraith wrote: the original ROM itself is irreplacable. It's so old that I could not even find the pinout or a datasheet of it, much less get one or locate a suitable device to program it
Heck, if it's that old, I might even have one in a box somewhere around here, along with the data sheet. What's the part number?
Will Rogers never met me.
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74S471[^]
All the usual suspects claim to have a datasheet, but once they have lured you to their pages, they admit that they don't have it.
Edit: Found a datasheet[^]
I have lived with several Zen masters - all of them were cats.
His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.
modified 15-May-18 5:47am.
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Sorted?
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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A E L N R Y
Software rusts. Simon Stephenson, ca 1994. So does this signature. me, 2012
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Technically correct, which is the best type of correct! 
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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Fairly?
98.4% of statistics are made up on the spot.
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Man, even with the correct wording, that sentence is so run on an obfuscated, it's no wonder software development sucks so much nowadays, what with communication like that.
And yes, while I woke up on the right side of the bed, by the time I'd read through the morning emails at work, I can definitely say there was a mood transition to "why the pluck do I work at this job? I just want it to pluck off!" The irony -- poor communication is at the heart of this mood as well.
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raddevus wrote: Code can be terribly interesting to create but terribly boring to talk about (depending upon the communicator).
And what I always find amusing is that it can take a week to create a useful and important feature, and 30 seconds or less to demonstrate it. There's no justice in that!
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raddevus wrote: Code can be terribly interesting to create but terribly boring to talk about (depending upon the communicator).
And as a second thought - that's why I hate code reviews. It really floors me how poorly people are at communicating what the code does for code they wrote!
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Marc Clifton wrote: that's why I hate code reviews.
I can't believe how much we agree on this stuff. I was just saying to someone the other day, "I love to code and talk about software design, etc. But the best way to make people's brains completely melt is to do a code review. Total boredom -- even for people interested in code."
MEGO == Code Review
MEGO - My Eyes Glaze Over
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Said EVERY girl in a room full of geeks with a functioning computer!
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