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- Опубліковано 4 вер 2024
- Marty! This is the big one, the one I've been waiting for all my life!
Teardown of the classic Data IO Unisite Universal Programmer from the 1980's, with a typical configuration selling for $35,000
It stayed in production for over 20 years.
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UPDATE: From one of the original designers!
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Great tear-down Dave I really enjoyed the review. My team developed the mother board the Toshiba Gate Array and the Ram board and we were responsible for the Pin Processor design you may not have noticed. All the Toshiba Gate arrays (one per quad pin driver) work together with a dual ported interface to the 68000 to form a variable width instruction word for the distributed associative Pin Processor. The UniSite is still likely capable of programming most parts that exists from a hardware perspective. It can run single ended or differential signals, any logic level, any current level, and any voltage level within reason and can generate any required pin waveform within reason up to several MHz using the Pin Processor. If I recall correctly the only part it didn't program is the old 1702 because of the crazy high voltage that part required. The Pin processor instruction word grows wider as more pin drivers are added and it can grow to many hundreds of bits wide. The Toshiba Gate array was pin configurable to support either 4 universal pins or 16 logic only pins for gang programmers. Designers that worked with the DIP version of the 68K will likely guess the reason for the ferrite bead soldered to the 68K CPU strobe line is due to internal ground bounce in the 68K which occurs under heavy bus loading. It was decided the cost of a board spin was too high to justify a new PCB layout, not sure if that was ever fixed. I also designed a 68020 upgrade for the UniSite but the board was never layed out. At the time we designed the UniSite I received a lot of questions about why I would put a "Workstation class" CPU into a programmer. About two years later the 68K was already low cost so I had no regrets and my manager always supported the 68K choice. The software group blew through the first 640K of ram before we could release the UniSite and I had to scramble to build them a memory expansion board which was released and running two weeks later. The 68K was one of the few CPUs available at the time that could address above 1M of RAM without paging. There were a great many design challenges creating the UniSite and we had an amazing team of mechanical, software, digital, analog and SI engineers to devise solutions and make them work. We also created a couple lower cost versions of the UniSite which programmed fewer parts: the 2900 & 3900 and also a really low cost version initially called Chip-lab. All of these version used the same programming algorithms and the same Pin Processor design. A newer version of the gate array chip was even developed that quadrupled the number of pins supported and integrated many of the analog pin driver functions into a single full custom chip. All ancient history at this point :)
thanks for sharing! Its incredible how small our world is now that UA-cam / Google has brought us together.
The great ancient ones are rising and commenting on youtube! Iä! Iä! :D
...no offense, but this was like trying to read the owners manual..!!
Very cool to see one of the original designers responding here! Do you happen to know if these are still in active use today?
The architecture you describe make it sound like they would still be damn useful in certain use cases.
Kellee Crisafulli
You and Your Team are Legend .
Thanks for sharing your early memories ...
These 'random niche super expensive custom thingies' tear-downs are my favorite.. The giant ancient hard drive comes to mind.. This was an awesome video, must have been so much work to edit, thanks!!!
No more work than any other video. Editing isn't that hard when you shoot everything in sequence.
@@EEVblog hey Dave Jones a big fan here.
My question is actually about the programmer itself.
In terms of the relays.
Just curious what the coil voltage on the relays were and how much current.
When you've got that many relays it adds up in terms of current you know.
I would think that would be 5 volts or 12 volts.
But could be even higher.
When you have that many relays.
As you know the higher the voltage the lower the current.
Oftentimes equipment I've seen I've noticed that you might think there might be a fine for a 12 volt relay
Or relays.
Maybe a piece of control gear or something.
And oftentimes if there's a higher voltage available on the system in terms of power.
Re-lace will be at the highest voltage often times.
I'm speaking from personal experience here
Also I have a torn down some stuff for for parts.
Initially I had noticed sometimes there was like 24 volts on one power supply rail.
But scratch my head why do it be 24 volts when nothing would require that high voltage at least until I saw the relay voltage.
The only thing that was using it in some devices it was only the relays using that voltage nothing else.
Also I've seen this in line powered equipment using a resistor in either a full Bridge rectifier for a single diode to operate relays.
Over 24 volt relay.
Example of this a soft start board with Ableton delay to power resistors one in the mall Takei Region 4 Prime power any other much much lower value for the soft start..
Obviously inductive load big big Transformer.
Which this device will end up becoming my bench AC power supply for almost any voltage imaginable.
Also additional voltage has the neighbors will provide.
Also before I had that.
I built something similar. From scratch.
Had a isolation Transformer a variac.
And many other Transformers.
Of course amp and voltage meters analog by the way.
Tons of binding posts.
Of course overcurrent protection.
And a key switch no kidding.
There were people in my home shop that were not exactly qualified to turn it on.
also I had another box I built that used various different things in terms of Transformers
Doorbell Transformers signaling Transformers one of them was 24 volts at a hundred Watts Plus.
Any type of Transformer with multiple windings.
All the wiring was brought out by banana plugs and or binding posts.
Every single one had an individual fuse.
Rating for the current of that winding.
even some of the Transformers were salvaged model train Transformers including Lionel Transformers American Flyer whatever I can get my hands on that the voltage would be in the right range.
By the way if the crest Warhead variable voltage of any type there are knobs that came out the front panel.
Also there were Chris Ward from battery chargers.
If it has a Transformer you probably find one in there.
by the way that thing was on wheels.
It still exists.
Same with a lot of buy custom equipment i built.
And by the way that piece of equipment weighed in excess of 50 lb possibly coaster to over 60 pounds.
"You couldn't just wander up..."
"No, you had to find THE PRIEST who OPERATED this thing."
😂😂😂
We had one at Philips electronics in Montreal. The gold sheet conducts only in the vertical direction (through the thickness of the sheet) and was a significant wear item for PLCC packages. A sheet would wear out every 5000-7000 programming cycles. Our unit was originally dual floppy; eventually went to the hard drive version, which stored all of the operating system, and device models. Ours were used to program mostly PALs, GALs, and EPROMs. Unit was about $20K Canadian, full pin cards, but with only the DIP module. PLCC module, SOIC modules, and the PQGP modules ere extra, as were the adapters for each package. Service contract was $4-5K/year, which got you all the new device models, updates to existing device models, OS updates, and hardware service (we carried spare driver cards, and just sent the bad driver boards back for repair). The memory expansion board was needed for more complex devices as time went on (more complex GALs, FPGAs, high density EPROMs). In our facility, FLASH was programmed on the ICT after they were soldered to the board due to the FLASH pins being so delicate (SOIC .020"), and because the Genrad 2287 was as fast as the Unisite. It was eventually replaced by the Data I/O 3980,which had a higher pin count, and could be used with automated IC handlers.
Incredible Electronic Engineering, "Universal" is easy to state, but far more difficult to truly achieve. Looking back can be both demoralising and satisfying, but always an achievement. One of the best architecture execution I have seen. Many thanks for sharing this Mr Jones.
For anyone wondering: "The Unisite was the flagship model of the Unifamily line, selling for over $35,000 in a typical configuration"
Woah, what's that in today's money?
Bloody hell! 35,000+. You certainly couldn't afford it.
Around $80,000
Im glad this got salvaged instead of discarded ...All for the want of a capacitor
@@greenvm Wow. That's not including support contracts and various parts/modules. Truly the high end market focused device Dave suggested.
I remember when they first came out, I used to calibrate the DATA I/O devices as I was an engineer at an Office in Nashua NH in the States I would still be there but they shut the office down and move it closer to the customers which was NC Triangle Research Park where all the East coast high tech companies lived, equivalent to Silicon Valley. This unisite and the gang programmers were state of the art along with the other company they bought which was a lazer label company that marked the devices with labels using lazers instead of the white paper labels which would wear out over time. Great company they always kept up with the times always thinking ahead. My first employer out of college, fun times there. Enjoy you video.
I did my best testing it. :) Doug G.
Hahaha. Good job, Dougie.
Have you really tested it?
Wow 😳 nice to meet you here, Doug ! You have also tested mine - lol 😝
Damn Dave, this programmer is absolutely badass! So complicated engineering here! I'm really impressed. You definitely must to fix and try it in action!
Yep, will give it a go.
EEVblog I depended on this equipment for decades.
So nice to see it and hear the summary. Great topic!
Ok, I'll get the beers in, wife is off to cribb evening so can spend all nightwatching the fix video. Some time soon Dave.
H&R is Hunter and Ready. They developed the original commercial RTOS (VRTX) and essentially created the commercial RTOS industry.
Trust you to know that Steve!
Sadly, I also know that my friend Jim Ready, a very kind soul, passed away late last year. Loved the teardown, by the way. This Data I/O box is crammed with electronics history lore. The GI Clare relays are from General Instruments/Clare, I believe. CP Clare was a huge, old-line player in relays dating back to tube/valve days, has gone through many name changes, and is now part of IXYS. The small white relays with the Bar-F-Bar logo are from Fujitsu, the high-end relay vendor in Japan. And as Mike'sElectricStuff already pointed out, the Toshiba gate arrays are not programmable--they're an early form of ASIC. They're stamped at the factory with a layer or two of final metal interconnect to define the part's function. FPGAs only appeared on the market in 1985, the very year that Data I/O designed this beast. You could certainly get PALs by then, I designed with those myself, but they were likely too simple to be used in this application. And the Boschert power supply comes from the very company that invented off-the-shelf, low-cost switching power supplies (or at least a power supply company they bought to expand their product line). (And from the video, that mains-side transformer might have released the schmoo. At least it looks like that but it could just be varnish.)
Steven Leibson wow
Steven Leibson AvE fan spotted :D
I remember using a smaller version of this programmer back in the 80s. They were the gold standard for sure. Absolutely reliable and bullet proof.
We still use one where I work (avionics repair).
DataIO will actually buy back any of the old programmers to re-furbish and sell on as they are still used and in demand but they do not manufacture them any more.
D'oh! Now you tell him.
They still offer support for them as well. I would club a baby seal to get my hands on one for a good price.
Those Toshiba parts are not programmable - they are "sea of gates" ASICs where just the final metal layer(s) are customised for the desired function, so cheaper than a full-custom ASIC.
mikeselectricstuff
Just wondering if you managed to get hold of a manual for any Eidophor stuff?
I watched your presentation vid recently. It was fantastic.
I always assumed that the big screens at places like NASA just used CRT projectors, but now I know different.
What a completely bonkers bit of vintage tech. The Eidophor puts the inefficiency of my Argon laser to shame. lol
If I remember rightly, there's a blog post out there from someone who'd reverse-engineered these gate arrays explaining exactly how the technology works
@mikeselectricstuff sounds similar to the Ferranti ULA !
There is a book on how the ULA for the Sinclair Spectrum was designed. Well worth a read!
ElectronAsh added that presentation to my "watch later" list :)
Notice the jacks "terminal" and "remote". Not only could you hook up your VT100, but the unit can sit inline to the terminal server to your VAX. You could get the programmer ready then log in to your account on the VAX and download the hex file directly to the programmer, then switch back to local operation to burn your chip. Very convenient!
They thought of everything
The H&R EPROMS on there are Hunter & Ready - probably an early version of their VRTX real time executive. We used VRTX-86 and VRTX-32 back in the mid to late 80's. H&R used to run a promotion "Find a bug, Get a bug" where they'd actually give a VW Bug to anyone that found a bug in VRTX. We found several bugs - sadly, that promotion had ended, so all we got we coffee mugs that read "I didn't get a bug, but I got a mug". It was a very solid RTOS - the bugs we found were very minor and easily worked around.
In the 80's, 90's and early 2000's we used Data I/O for everything in our R&D labs at Boeing
Thank you for the nostalgia. Data IO was just down the street from an electronics surplus company I worked for as a kid. I could practically smell that programmer when you cracked the lid open ;)
Speaking as someone who knows very little about electronics, those pin driver boards look 15 years ahead of their time. They look like an early 2000s consumer desktop board.
Great video Dave, and congrats for passing 500K subscribers!
Thanks. Only took 8 years, an overnight success.
We wore those programmers out keeping up with changes back in the day, Y2K planning and manufacturing systems across the continent and pond. Who knows AGV AVL? Thanks for the memories.
Thanks Dave for the trip down memory lane. You brought a tear to my eye.
That brings back nightmares of scrabbling around looking for blank EEPROMs, then plugging it into the DataIO and crossing your fingers it would program. Multiply that by about 12 for one of our modems. Thank god its over. I celebrated when flash arrived.
The real fun stuff was for bipolar PROMs and PALs that specifed all sorts of wierd voltages as well as rise/fall times - EPROMs and MCUs were trivial in comparison
You aint kidding. I can remember the 2732 from Mitsubishi needed 18.5V for 50ms on the prog pin. It was a pain in the neck to design a home brew programmer for them when I got some freebies.
Hey Mike did you ever see that music video i made with you in? ..i sent you an email about it ages ago asking if you minded me using parts of your original one. it's one about the iris scanner, its called "The Mirror - By Orbinc Feat 'Mikeselectricstuff'"
Yep..Ramp voltages too fast or slow and nasty things can happen. Also some chips needed current limit on PGM. Just in case ;-)
I do wonder if this system was capable to program real old eproms with multiple voltages ( +5/-5/PGM)
Yep, the EPROM programmer software I wrote was a dog to maintain all the different subtle differences in brands and devices, and that's just algorithms, not including any weird electrical requirements.
Yep, indeed it can handle the old devices with multiple voltages (e.g. TMS2708/2716)
Yelling at screen, "yes, it says QUAD PIN DRIVER on the damn board"
I live close to Redmond, Washington. Data I/O was at my first job fair in Seattle. I didn't get a job with them, they always wanted a bachelors degree.
How would they programmed this programmer?
Maybe its like metalworking - You can use a lathe to make a better lathe. The first one was some guy with a chunk of metal in a drill in a vice carving away with a wooden spoon and they steadily got better and better
:-)
You think that machine is cool, I'm sure the gear that these wonderful engineer nerds who made this is GOD LIKE, super 1337 tech, haa
Go deep enough and you'll see guys with literal mechanical switches and a lot of patience. That's how people used to bootstrap their PCs back in the days: mechanical switches and hex printouts.
Yep. Before the first programmer, they would've used dip switches and a button to literally burn individual bits into the PROM chips.
You could buy those programmers with different levels of completeness. The Unisite my old company bought back in 1992 started out with enough cards required to program 27512 EPROMS and upgraded it at least twice after that.
This PLD writer was a revolutionary design, it was awesome.
I was using it with ABEL. It was an important device that supported my career as a circuit designer.
You had an interesting tendency to swap the first and second digits while reading part numbers, all throughout the video.
The price of being able to smell when something was made
Love the colourful 80's transparent wrap electro's. So many memories.
17:26 those relays are made by Fujitsu.
Your computer background photo looks very much like the internals of a pacemaker.
38:24 "They don't make 'em like this anymore" No shit. They certainly dont!! Noone makes *_anything_* like this anymore!My mind is blown. Its just.... I have no words. I am in awe.
Id have no idea how to work this but id wanna buy it anyway just for the sheer amount of care and development that went into making it. Its a work of art!
@3:41 Those caps are beginning to bulge, so they've been over stressed. They have 30 plus years on them. Replacement of the electrolytic's and power resistors will most likely bring it back to life. The odd transistor might be blown too from the off voltages.
The interesting thing about that old caps is that they are probably perfectly fine after 30 years. Most of the time the "new" caps made in the past decade or so that notoriusly going to fail after a few years.
Not true. Electrolytic caps have a lifespan of 30-35 years. The Japanese back in the 1980's to increase their production levels raised the temperature of the soldering mechanisms to several degrees over the manufacturer's rated temp. This shortened the lifespan of those caps by 10 years.
Electrolytic capacitor replacement in Japanese made radio equipment is well known, and many kits offer complete electrolytic cap replacement exist. Absolute dodgy capacitors are all Chinese made, no name and ripoff products. absolutely no reliability with them at any specification.
Switching power supplies are extremely hard on electrolytic capacitors and will shorten the lifespan of any professionally made cap by 1/3rd to 1/2 of their normal life span.
Those .825ohm current sense resistors were made by DALE resistors in Columbus, NE, USA. DALE was bought up by Vishay sometime later but the DALE brand is still maintained.
Paid about $12k for a demo model back in 1987 for a consulting gig. Worth every penny and more. Eventually junked it.
Holly Molly... Impressive machine, and those pads are quite amazing
Presumably all those relays do is switch each pin between the pin driver and ground
Yes, they don't do anything fancy.
mikeselectricstuff Even so, the specifications for those relays required gold plated bifricated contacts.
I wonder why that functionality wasn't incorporated into the pin driver circuitry.
I programmed EEPROMS for the company that invented the heart defibrillator and here's a tear down and explanation of a machine that I used for three years (mine was a bit fancier and we had two of them) . That would give the defib it's OS and language type (english, portugese, you name it. Data/IO was just down the street, Crane Co. had a military IC fab plant in the area as well. All very high tech for the day (1984-2000)
You're not done til we see bare metal! What's that daughter board under the mainboard? What's under that? And where does the RAM board actually go?
Just to think of all the tech all these bad-boys allowed to have the logic that truly made our lives easier, and more advanced; especially considering the extended support.
Mad respect.
The conductive pads are really clever designed. Makes me thinking like a two-dimensional zebra strip.
I have to say , those bodges are some of the most skillfully done that I've seen in all of your teardown vids.
I got a Data I/O unisite programmer. My unit has all of the pins populated. Can do 80 pin DIP (need special adapter (lost it in the box where I keep all the adapters for the data IO) for that.
The ZIF adaptor I have has 80 relays (80 pins)
Whatever I stick into it, it will program
I would like to know how many people worked how many years just on the design of that device. Absolutely amazing!
A bit less than 2 years as I recall. The first three months were spent in design and research of the concepts and creating agreement on the approaches. At the peak we had four teams including Analog, Digital, Mechanical and Manufacturing. The digital Team (Mother board, Ram Board, Toshiba gate array, PLD designs Pin Processor, Pin bus, expansion bus, Pin Processor architecture) included three engineers. The analog Team (Waveform board, analog chip and Pin Driver) included four engineers. The mechanical team included 1.5 engineers (one part time). The manufacturing team included one full time and several part time engineers. We also shared two layout designers and two components engineers with the rest of the company. Each group included a manager responsible for various projects including UniSite. (a large number of people) :)
I started on a Neeedham gang EPROM programmer. Data I/O was the Cadillac of programmers. Those were the good ol' days.
Oh soooooo nicely built, I really do hope that you get this unit working, a museum grade unit in so good condition !.
Let me know if you have a working unit now Dave...
Philip from England UK
I’m fairly certain that’s a pacemaker/defibrillator on the desktop. Reed switch at the top for the magnetic disable and the 4 leads for pacing to the right. You can decide how many leads you want to run into the SCV and tunnel them out to the pocket where it connects here
Really enjoyed the bodge wires and bodge resistors, I've been doing that all day to an audio mixer
All that crazy analog waveform generation and voltage levels are to ensure the parts are programmed to not only the manufacturer's spec, but to whatever MIL spec applied as well. If you did military and/or aerospace you had one of those.
I didn't know there was additional mil spec for programming. There wasn't for the parts I programmed in military products that I recall.
Good luck on getting it up and running! You sound like a kid with a new Christmas present. Enjoy.
Built my first programmer to do 1702A UV eproms. IIRC is was a chore with both pos and neg voltages and special timing. Next gen parts used only pos voltages and was much easier but you still had high critical programming voltages -- Can you say TTY paper tape for source data. Finally DATA IO cam out and we never looked at building our own programmer again. Never really liked the conductive pad -- didn't trust it to make 100% contact, replacements were expensive. It was mostly used for GAL/PAL devices, when parts didn't work you always wondered if it was the socket/programmer or your Abel code.
Early parts had hard fuses, but later on Lattice came out with peprogrammable parts and life was much easier. I had that same DATA IO model all tricked out, also had some earlier versions over the years. Others would try and sell us their programmers but DATA IO was the only one to buy. Craig
Craig, those 1702A were tough to program. Weird -48v programming pulses IIRC. Not easy with the semis of the day.
I worked as a lead tech for Data I/O in the late 70s. We built "personality" card sets to program the 1702A. Most of the orders we got for this device by the late 70s were from the military. We built a new programmer every few years until the Unisite. We also built paper tape punches, readers, and Hollerith card readers. Our early programmers used TTL sequencers until the Model 9 which used a Motorola 6800. The next product was the System 19 which used the 6802. The two engineers who started Data I/O were amazing engineers and individuals. There were some early PMOS electrically alterable devices that used some exotic voltages in the -48V range. I had a blast working for Data I/O. I laugh when I think of Data and their impact on the electronics industry. I was so proud that I did the "first article" test of the personality card set of the +5V single voltage Intel 2716:) The device that revolutionized the microprocessor industry. PALs were popularized with PALASM, Scenario, and Data I/O products. Great company with an interesting history.
This channel is great. In-depth reviews of unusual hardware, with an enthusiastic hardware enthusiast full of random bits of relevant info.
Plus the Australian leprechaun accent is the icing on the presentation.
Just the right video to watch this evening. I‘m just back from the Embedded World expo and as it happend had a chat with Data I/O today. The good news is that they are not charging extra for algorithms in their latest series which is great. I remember lots if discussions when we designed in new micros and had to convince people to buy new algorithms.
Did i just hear a Back to the Future ringtone at 27:06 ?
You did indeed.
yep you did
There is way too many nerds on this channel! I love it!
Great Scotts!! Do you realize what this means?
Great Scott this means 1 pellet 1 trip
oh look he's using the pace maker picture as a background
I really hope you get it up and running and can let us tag a long
Conductive pad is an incredible idea, wow.
19:30 this is so BEAUTIFUL !!!
thanks for showing us
Was hoping you'd do a teardown of one of these beasts. I bought one second hand years ago and have never needed to use another device programmer :)
* The relays are for switching VCC/GND onto a limited number of pins (the Site 48 only has 28 relays too).
* Depending on the configuration, a UniSite would have set you back between $11-18k in 1988:
bitsavers.informatik.uni-stuttgart.de/test_equipment/dataIO/brochures/Data_IO_Price_List_1988.pdf
* H&R INC = Hunter & Ready, developer of the VRTX RTOS used by the UniSite.
* Good luck finding schematics for the pin driver board; I haven't encountered them in the wild.
I used to use one of these back in the 80's and I've still got some of the plug-ins.
The first commercial product I ever made was an EEPROM programmer back in 81. It connected to the commodore pet or apple 2 and had very little in it apart from some 8bit latches and tranies to handle the vpp voltages, but it could program most of the memory devices at the time.
This is like a piece of analytical equipment I have at work, it started on its own OS/terminal system and they supported it all the way through DOS up to win 2000 (theoretically win xp but we stopped upgrading it at that point)
It also came with massive books of instructions and software on everything from eprom to 7" and 3" floppy
omg, the good old days of playing with electronics in the 80's.. good times, and great learning experiences.
You touched the pins! Such a rebel. Watch out ladies, we got a bad boy right here. lol :)
Some of those old EPROMs needed a 50V programming pulse, not just a wimpy 12V or 25V. I think it was 2708 (1K by 8 bits) in particular which needed a 50V pulse in order to program a location.
Later EPROMs changed the programming requirements so that you no longer needed to pulse a relatively high voltage, but instead supplied a constant higher voltage (12V or 25V or similar) to one pin and you pulsed 5V in order to write to the currently addressed location.
That RAM looks like it's 4064 chips (1 bit by 64K) or the equivalent which is a little strange since they seem to be arranged as 128K by 8 bits, and then another 64K by 4 bits.
To think that these days, a little MiniPro which will fit in the palm of your hand will do all the programming you're likely to need, and more. It programs and tests every modern (and a lot of old) PICs, ATMELs, EPROMs and EEPROMs, as well as testing 74 series and 4000 series logic chips.
10 MHz 68000 - pretty powerful machine for the 80s.
God damn I love it when he says " Dont turn it on, take it apaaaaat!!"
apaaaaatt
You should see if it can be repaired this would be nice to see in operation, especially with a serial terminal, sad I got rid of my last one a few years ago.
It would make one hell of an LED blinker :)
I'm not sure if it was one of the Stag programmers seen at 0:41 that I had to use for a little while when on work placement at a site which made IBM terminals (had a stint on a Zehntel 1800 test rig on that line) and Star LC-10 printers (which was the line I played with the programmer on). Going back 30 years here :D
As it happens if you check their website - they do still support that model although they don't manufacture them any longer
the white relays are from fairchild semiconductor
32:04 - "Don't be vague, ask for Sprague!" There may even be some "Be right with Ohmite!" resistors in there.
Your vids get me just as excited as you lol that processor was insane
DataIO: And to do that you can just buy another adapter.
Apple: *taking notes*
Please get it back into operation, would be great if I could send my obscure EPROM programming requests directly to the EEVblog master.
From what I’m reading, the 68000P10 is a version of the 68000 rated for 10mhz rather than the usual. 8mhz.
6 layer board in the 80s ? no wonder they were pricey :o
Those conductive pads are super weird.
Yeah, but they worked great.
mrlithium69 A 2D version of the zebra stripe?
Extremely expensive but extremely useful for programming bga's and alike.
I've always heard it called Z-tape. Looking it up, 3M calls it Electrically conductive adhesive transfer tape, PM 9703
@Ashley Booth kind of. But with gold and not that one time use conductive polymer stuff.
Redmond washington? MICROSOFT?!?
i like this trip down the history hardware videos
The floppy controller WD1772-02-02 was also used in the Atari STs it was an old Chip back then. They used it because it was cheap.
Interesting tidbit. At the end of Atari the WD1772 wasn't produced anymore, so Atari licensed it updated it slightly and build variant named Ajax that could read and write SD, DD, HD and ED Disks. But the ED capability was never used.
@EEVBLOG I believe that's a Kapton tape, not mylar
Kapton is the golden one, and Mylar is the silver one, right?
@@wesleymays1931 yep
I remenber whem i worked with this machine and Pro Master too. Good time.
The power supply could be going into over-current shutdown due to a shorted rail on one of the boards. Looks like a few tantalum caps on the waveform board, I wonder if any have gone short.
This is two years after this video. I must go and see if Dave went any further with this. I want to know why that power supply failed. I know, it's just a power supply. The rest of that circuitry is mind boggling and gorgeous. I love stuff like that. What a Machine!!
At my old work theres a Hi Lo "All 07" universal progra,mmer. it uses a DOS program called "Access". Easy to use and works really well!! Like the DataIO programmer, the whole top lifts off and there are loads of adapters. I used it a few times whilst I was working there. :) After using the UV eraser on the EPROM of course.
You are invited to the Jan Cox Facebook Group today.Have a fine programming.
Omg 😱 I don’t know 🤷♂️
Keep/Repair/Scrap
So many options.
I 💕 options.
👍 nice find
Another very cool video, for as long as i can remember I always had crazy strong urges to take everything apart I wanted to know how everything worked even when I was a little girl most of the time I would put it back together and it would work only not always. I would love to know how much gold could be recovered from that machine I know now the amount of gold is tiny compared to what used to be done with modern manufacturing. Its good to know im not the only crazy that gets excited over this crap, now put back together, repair and let’s program so chips
Given the age of that power supply, since it does light up for the shortest moment there before going dead, if it's got a primary side controlller, i would guess that it is a bad startup capacitor. Of course a full recap of that power supply board would be in order anyway.
I am so, so glad that was rescued from being thrown away! It irritates to me to no end just how often stuff that is worth so much (or was worth so much), worth alot to collectors, and other rare, special items end up getting THROWN AWAY!!!! It aggravates me so much! I am SO GLAD this was RESCUED!!!
I thought that us brits had some funny slang but duck's guts is hilarious lol.
FREAKING. AWESOME.
I love this channel. I Love it!
That GI logo looks like general instruments, same company that made that infamous AY-3-8500 pong on chip.
amaising thing, tracing is increddible for 89 year!
Ahh... so nice with a classic teardown. More like this stuff please !