More Mailbag Monday
Forum: http://www.eevblog.com/forum/blog/eevblog-1130-mailbag-monday/'>http://www.eevblog.com/forum/blog/eevblog-1130-mailbag-monday/
SPOILERS:
A-TEK AT-601 PC ISA Bus Design Breadboarding Tool
Gigatron TTL computer update
https://gigatron.io/
VintageTek museum XY demo board
https://www.ebay.com/str/vintagetek
1970's Casio CQ-1 Calculator
Zofz PCB Gerber Viewer
https://www.zofzpcb.com/
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Stuff I recommend:
https://kit.com/EEVblog/
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Forum: http://www.eevblog.com/forum/blog/eevblog-1130-mailbag-monday/'>http://www.eevblog.com/forum/blog/eevblog-1130-mailbag-monday/
SPOILERS:
A-TEK AT-601 PC ISA Bus Design Breadboarding Tool
Gigatron TTL computer update
https://gigatron.io/
VintageTek museum XY demo board
https://www.ebay.com/str/vintagetek
1970's Casio CQ-1 Calculator
Zofz PCB Gerber Viewer
https://www.zofzpcb.com/
EEVblog Main Web Site: http://www.eevblog.com
The 2nd EEVblog Channel: http://www.youtube.com/EEVblog2
Support the EEVblog through Patreon!
http://www.patreon.com/eevblog
AliExpress Affiliate: http://s.click.aliexpress.com/e/c2LRpe8g
Buy anything through that link and Dave gets a commission at no cost to you.
Stuff I recommend:
https://kit.com/EEVblog/
Donate With Bitcoin & Other Crypto Currencies!
https://www.eevblog.com/crypto-currency/
T-Shirts: http://teespring.com/stores/eevblog
๐ Likecoin โ Coins for Likes: https://likecoin.pro/ @eevblog/dil9/hcq3
Thank you very much. Mike Ruffin from Maidstone in the old art, let's check it out. I Like what's in here because it's obsolete apparently. Hmm, let's know what is obsolete.
but something is all. It's been x-rayed all right. Wonder if that was looks x-rays by the by the pons or locally? I Don't think we give a toss. Oh there's a note.
Personal Computer design tool hands up if you had one of these designing Ty 187 The good design, The good product design it. What a good product design award. Fantastic! It's obviously some sort of logic trainer it hooks up to a PC so I wonder if it like um, like hooks up to the 88 Xti, 80 bus or whatever. Fantastic.
Oh yeah, oh not yet. No, it's got a time. Yeah, it's come time. Dedicated interface board.
Ah sweet ass, check it out. It's just basically IO like there's nothing else, nothing else doing on there. it's it's just doing some address decoder. Yeah, doesn't even have any cows or pals.
it's just girls and pals. Look at the yellow end on the bottom breadboard. there the bromine um leached out of the plastic. It was for like designing and developing PC cards.
I guess cuz why else would you you know, want to access the address and database on the PC bus? Wow Never seen this before and the logic probe interface. Aw, we don't have the logic probe but anyway, um it's an interesting bit of kit. Thank you very much. Mike Let's check it out.
There's the interface board for it. as I said like there's no gals or pals or anything. Look at this 74. Oh seven.
Fantastic. thank you very much. Some two four four four latching out the day and driving it and that's about all she wrote. You don't really need much to interface with the ISA bus.
it's all just yeah, just latches and buffers and stuff. I Do find it interesting how they've mixed and matched. There are two four fours. They just like couldn't get them all from the same batch.
Wow. This is really something the A Tech 8601 design tool for personal computer use. thank you very much. It's actually got PC bus input and output so that you could.
you know breadboard stuff and breadboard your circuit in line and then feed it back out and stuff. So it's a got a mains power supply on it flight House Southampton hmm and a switching. Basically the internal power looks like it's only for its own dedicated switching power supply which gives you plus minus five plus minus twelve. Doesn't tell you anything about power and it just gives you multiple connectors for that logic probe.
Unfortunately, my cart lost the logic probe, but it's just a digital logic probe. and then you can get access to all the interrupt pins or the knowledge pins, the oscillator data bus, address, bus, power bus fantastic and outputs sync Old Shop I Don't really know what that is designed to hook up to a scope or something. Hmm. strange.
So my guess inside this is that we're just going to have a couple of buffers on the input because I doubt that with the two four fours on the card over there are going to drive the ribbon cable and just like come out directly like breakout directly to this. They've probably got some more buffering there would be my guess. And they're switching power supplies. Let's crack it open. Made in Taiwan All the best stuff was made in Taiwan back in my teeth, let's look at this like bakelite. yet. there we go. Yeah, it got some extra buffers called it and it looks like it's just got like it's just like repurposed a A switching power supply and sure they wouldn't have done that themselves.
They like. Baaah, they definitely didn't It's our TPI electronics Co they you know, but that could have just been a switching to passable at the time. Look at that. the resistor on top of the diode.
it's pretty. how're you doing? The snot is up, the hot snot is a bit worse for wear. Hmm. Anyway, that's not the world's best.
just let's stop them flapping around in the breeze there. It's not the world's greatest power supply is it? It's all about how you're doing. But there we go. They've just like bussing those between the net was hot spots not to hold the screws down and once again some to four falls on there just to buffer everything.
and Gold Star I Haven't seen a Gold Star chip for a long time. Anyone remember Gold Star? Yes, they that's the Consumer Electronics Company. Gold Star. They did actually make their own chips back in the day.
Anyway, it's just simple release. I-153 from dying in Jesus solder. It's pretty how you doing in it Wow Unbelievable. And what's that rattling noise? Oh there we go.
It's a screw. Yeah but yeah like there's not much in it. it just basically just goes up to the sockets and then like they just didn't engineer that? Well did they? Some poor bastard had to solder all that in by hand and getting that stranded wire through each individual holes. If you could do all that and not have a little dagi short, go over to the next one.
you were having a good day. trust me, that's terrible. Muriel So thank you very much Mike for that 2-minute teardown Wow Like I didn't know I think I've ever seen something like this with the bread boards. Look that she got four of them.
That's a standard sized bread boards that's you know. Fairly decent to prototype your circuits and stuff that hook up to the ISA bus. Of course it was only the 8-bit Isa bus. You want to do the 16-bit Nah, don't know, maybe they had another model for that.
but yeah, hands up if you used one of these all you develop stuff for the ISA bus back in the day. Thanks Mike Yes it's the Gigatron again. Thank you very much. Biosecurity screened thank you very much.
Interesting Yes, they clued me up that they were sending me some extra stuff which is fantastic and I'll show you in a minute. The four-way aboard but now works. Spoiler alert Sorry, but apparently we have a keyboard tonight. It's a long note. it's a plug emic pluggy McClung and adapter that lets you hook up a retro Ps2 keyboard. still got one of those I think it translates our into s Kiko which the gigatron can read Fantastic as the gear Tron's only got like the Pc sorry the controller input and they sent me a new rom as well which has the Oise monitor the original Apple one so it simulates and emulates an Apple one and has a basic interpreter. Fantastic! It's Peridot. Let's check out Plug Emic Plug face Oh Got a soldering.
Oh, the irony of a TT or microcomputer needing one of these newfangled micros to do the serial conversion. Unbelievable. And I thought they had goofed this up for a second because it just doesn't fit in there. But if you turn it over no, the instructions are there.
mount you one to the other side first and they're conveniently cut away some of the socket there so we can whack it in. Someone was thinking so yes, this is the Four Layer Dave CAD version which you've seen in previous videos. And yes, it does work. So we'll get ourselves the new version three ROM it's Stoke it up.
First world nerd problems. Check it out. We've got some extra options. Beautiful.
This was mine. Basic tic-tac-toe bricks and tutor. Honest? no idea what that is. Anyway, our keyboard works and of course you've seen the pictures and stuff before.
Tic-tac-toe The was mine. Enter Enter Beulah Spacebar. No, how do we enter the was mine. Do I have to read the instructions? Hmm.
Yep. home or end? there you go. Tiny Basic Version 201 Fifty nine hundred bytes free and four by it's free. You can do a lot in the extra four.
Check it out if I press the page DMK Haven't read the instructions yet. just sticking around. it gives us the extra resolution of the horrible resolution as stealing more cycles away from the video or can have nice solid oh sweet as CLS ever seen a clean screen that slope? oh there's L Okay I was waiting for okay to come up. Supports uppercase.
ah fancy pantsy stuff list. Our program. let's run our program. Hello World Fantastic.
doesn't the was mine supposed to have a flashing at cursor here? Anyway, let's see if we can explore some memory contents. or oh, go backspace. Oh there we go. Yes! Ben see the memory? Beautiful.
Let's go all the way with LBJ shall we Are We dumping the lot Beautiful. And of course if we press page down it'll go quicker and watch it's flying. Oh, we can't do the last command. zero zero dot F F Wow But of course if we aren't stealing as many cycles for the video, just takes a lot longer.
Sweet ass! Thanks guys! Thank you very much! Robert What has Robert sent? Settle up Vintage Tech Tektronix is quite amusing. Ah cool. A museum. A vintage tech.
We've got some sort of generator board. Oh yes, I won't show you what it's going to generate, but you can probably guess. Fantastic we're gonna do. It's a programmed micro that generates XY data which goes into our scope. Oh let's have a look and of course I've got to use you. See it? Tektronix Triple to five. Let's do it on that you. It's a Tektronix wizard.
Whoa. Check it out and the old Tektronix logo. Bring it back thank you very much. Fantastic bit of flicker on there.
That's not the camera. that's actually just the rate that they're doing this out, but that's pretty smooth. Look at that. That's great anyway.
if you don't know the Tektronix wizard used to appear back in. you know, schematics and manuals and stuff back in the day. Neat. And of course we can move that on the screen like that.
Fantastic. Looks best on an analog scope of course. And of course, if you change the volts per division, you can see that the individual dots made up in there. Well, not dots the individual Because this is a vector-based thing.
it's an XY vector thing that you can see the individual wire segments in there and the limitations of the DAC which they're using on this thing. which there it is down here. What? So we've got a nap, milled something-or-other and it's a shame they just use normal pads here for 5 volts. Would have liked to have seen like a banana plug, one of those little lower PCB mount banana jacks.
that would have been nice so that you can just you know, plug straight in anyway. Or maybe even extend the board out and have like a 9-volt battery clip and a little 5 volt regulator on there. that would have been lice. Anyway, we just got X&Y output.
We've got resistor arrays here, which of course are they're just using a resistor DAC there to generate. That's why they've got you know, seven or eight bits or whatever it is, resolution on the thing and the L and W one's a wizard and logo. That's what they stand for. so instead of alternating between them, you can just choose whichever one you want.
That would have been nice if there was just a switch on there. so thank you very much! Bob House from the Vintage Tech Museum and they actually sell this on their eBay store. They sold hundreds of them which is not surprising. I'll link it in down below if you want one, check it out and if we change the shutter speed 10,000 times the second six thousand, Four thousand, we can see some of the refresh happening there.
No Two thousand Fifteen hundred One thousand and we'll get to the point of shooting at us 60 before. So 350, 250, 180, 125, 100 and we're back down And we shouldn't get whoa. Nothing worse than a wizard over exposing himself I Don't want my viewers in Rochester New York Thank you very much. a Jason Allsafe's key For some reason that names a bit familiar I Don't know.
Anyway, it's not a mail bag without some of these. Let's check it out. It is plural as an S on the end so we don't just get one no siree. Bob nice fibrous paper I Like that? have we? I do FX 21 for you Casio fanboys like myself FX 21 I Don't think I have the FX 21 at a very similar form factor. What? Oh wow, what a Bobby Dazzler Look at that. Ah, fantastic. A Casio landscape format. What won't is time.
Oh, it's got what You know. The alarm calculates like a bedside table kind of alarm calculator. This was. you know all the rage in the 80s.
The you know the game and watch and you know everything had a clock in it. You know they were trying to like to integrate everything. That's fantastic. Unfortunately, the Cq1 is broken.
Oh what a bummer. But look at this beauty. Oh just doesn't get any better than that. ICQ What? It's even got a stopwatch with lap counter fantastic and alarm mode beautiful.
There's a little speaker output for the alarm and of course it's just a four-banger Oh, not even a square root. Love a good root single double-a powered and a couple of our Lr44 s for the memory. Back up there cuz you know you change the main battery, you still want your RTC to be running cuz you don't have to set your damn time again. Made in Japan All the best stuffs made in Japan Wow! you can actually use an AC adapter with it too for bedside use.
Let's open this baby up and see what 1970s goodness up we're gonna have aa few Springs Oh look at that! There we go as they're going down to our shield at the bottom. Whoa. Nope. Let's go What? Okay, no it's going up to the top.
What on earth Wow It's not a real of electronic product. let's go to spring in it. Oh yeah, look it's it. Just didn't look like solid copper on the top.
But yeah. I've got a copper shielding sheet down there. Beautiful. Huh? Let's flip that out.
Oh look at that. I have vacuum fluorescent display. Beautiful! NEC 7077 Vintage. That sounds about right given that the they're telling you to I set the time January 25th 1977 port and tighten space-time continuum.
Notice how they rolled their own board here for the little inverter for the the high voltage required for the vacuum fluorescent display. They didn't put that on the main board, they decided to what roll that is a separate one. Whoops! that capacitor was too high. Just bend it over.
No workers that one there bend it over. common as mud back in the day. So single chip I calculate a solution and obviously the vacuum fluorescent driver down in there got a couple of trimmers there look at that and a bent-over up bent-over package. All the electrons are gonna fall out of that one.
Yep. Fascinating technology from the 1970s I Love it. ends up if you actually had one of these and like these were probably all the rage back in the day. you know, so advanced like to have it like a calculator, an alarm clock and a stopwatch.
Did everything everyone wanted one of these babies because the first thing you want to do in the morning when you wake up is calculate something on your four-banger No worries. Awesome work! Thanks Thank you very much k Hardesty from Las Vegas Nevada sorry it was just you know, supposed to be. Well anyway, just a little gift from your friends at Fort Meade Maryland Awesome know what? I Guess the NSA has a gift shop and museum. Oh Vince has a gift shop and a museum with working in Nygma machine to try. Couldn't resist getting you a t-shirt to go with my tinfoil hat. Thank you very much. Ah, this is gonna be cool. That's a nice one of those that's not cotton that's like a proper sweat.
Under Armour Wow Under Armour Brand awesome NSA National Security Agency Fort Meade Excellent and to go along with my NSA monitored microphone I've now got the t-shirt we know Winner chicken dinner. thank you very much Those 0fz for this way cause I'm prints 3d like postcard II print things I was expecting more three deenis now the VIP might be showing up on camera bit up but that's cool anyway. goeb of your program Fantastic! I'll link it in down below. Check it out, you.
Love those antique electronics
"Whoping 9504 bytes free, We can do a lot with the extra 4 (bytes)". "Nothing worse than the wizard over exposed himself", lol. Where can I get that big knife sir? ๐
Honestly I love the weapon of "mass destruction" used to open boxes.
For the cq 1 watch the video from akbkuku. I think a component on the little daughter-board was faulty.
I had one of those Casio bed side calculator with alarm when I was young my grandfather gave it to me. He had it in a drawer and let me have it. Donโt have any idea where it is.
I have a tek 2232 in the secret menu it has the wizard and the tek bug.
Wizard is not vector, looks like scanning picture.
I still have one TV with the "GOLDSTAR" brand
Those many different 74XX ICs on that Atec design tool are more likely the user having fried and repaired it multiple times. I have no count how many 6526's of the Commodore 64 I have fried, also conducting IO experiments. They were pretty sensitive back then.
That breadboard thingamy is marvelous. Back in those days, I could do simple stuff using the serial port's handshaking lines as GPIO. But there was no way someone on my budget could get their hands on the ISA bus… saying that, it was probably way way way off my budget to have one of those.
Funny. Its still sunday here๐คฃ๐คฃ
Now that's a knife.
I had a CQ-1 :).
I was disappointed that VintageTek does not include the source code for the ATMEL device. Without the code the item is of little use after the original novelty wears off.
Funny enough that AT601 was mad 5 minutes away from my house… that Flight House does not exist anymore as a factory, is nearby the Saint Mary's Football Stadium…>)
Wheres the start? "Welcome to everyones favourite segment!"?!?
I guess that was a reference to the ferry MC ferry face
Nice big clive intro!
Do they sell tinfoil hats at the NSA store?