A Mac Classic accelerator, some chips as old as me and some Sharpie paint pens

[@minombredepila1580]

Please, Adrian, do not apologise for not producing two videos per week. Your fan club is quite loyal.

[@kd5byb]

Glad you enjoyed the Sharpie Paint Pens! I'm the guilty party who amazon drop-shipped them to you as a better alternative to marking chips with plain old Sharpies. I do find that even after stored for awhile, they start writing again fairly quickly, maybe with one or two depressions of the tip. :) I'm a fan of them. The red and black are extra-useful for marking polarity on various things. ENJOY! (and no worries about one versus two videos - it's your channel, do what makes you happy!)

[@jmiller101480]

They tend to work more quickly if you store them tip-down too! Nice gift!

[@CrazyHamSales]

You are welcome for the goodies Adrian, i figured the adjustment tools and chips would be something you could use! I totally forgot that my return address was from my business account, surprised me when you said CrazyHamSales on the video... LOL

[@ToTheGAMES]

I thought it was a way for you to advertise some :)

[@CrazyHamSales]

@@ToTheGAMES It honestly wasn't my intent, when i logged into USPS to create the label its just a force of habit to click the login for my business instead of my personal login, and i stick so many labels on boxes and packages every day it wouldn't stand out to me on the return address being different then i thought it should be. Either way glad he got it, couldn't stand to toss that stuff out when i knew someone could use it.

[@ToTheGAMES]

@@CrazyHamSales No worries ^^

[@HeffeJeffe78]

My date code is 78 as well.

[@alphahr]

74ls00, 74ls193, 74154, 555 is perfect for 16 LED Knight Rider circuit

[@pintokitkat]

Couldn't you knock up a little pcb using pcbway or jlcpcb that would adapt your socket to the pin layout of the Gemini card? It might stand up a bit higher, but for $5 it might be worth a shot.

[@francoisrevol7926]

I guess you'll have to find someone to design a Killy Clip replacement. Should be doable actually, with an SMD socket, a PCB, and some pins. Possibly the pins will need to be SMD as well if they are at the same place as the pads from the socket… Would need measurements at least… and to make sure of the pin orderingthe on the accelerator… maybe try to identify the ground pins at least?

[@francoisrevol7926]

just checked out from a photo of a similar accelerator card, seems the pins overlap the PLCC pads so we'd need SMD pins as well. cf. twitter.

[@Megabobster]

Wouldn't modifying the accelerator board to accept a modern socket be the best solution?

[@ciaduck]

Probably not something you want to do, but I wonder if you can redo the socket side on the Gemini to fit the clip you've got. It doesn't look like it would be easy though.

[@steffiesing5449]

when i look at the solder side of those staggered connectors then they are inline , why not desolder those and put some straight ones there

[@adriansdigitalbasement]

I had to take a second look, but they are indeed staggered and not inline -- so sadly the regular PLCC sockets are not compatible.

[@megaglowz8540]

We definitely prefer a non-burnt-out Adrian to 2 videos every week. Looking forward to any video schedule you manage. Thanks for all the wonderful info-packed shows you do.

[@oldguy9051]

Definitely. And we also have Noel and Ben and...

[@CommodoreFan64]

Agreed 100% i'd rather have 1 video a week, instead of him end up burned out, and then no videos at all.

[@tomcrumpy4581]

1 Video with a happy Mr. Black are far better then two with a non happy one . Please dont push it too hard.

[@abdullahchris9176]

I realize it is kind of off topic but do anybody know a good site to stream new movies online ?

[@CygnusTM]

What’s hiding under the 70s towel? Keeping a future video topic under wraps? 😀

[@bamdadkhan]

why is your username all fancy like that? : )

[@adriansdigitalbasement]

Future content yes :-)

[@marciomaiajr]

What?!? Do you have a day job? How do you manage to find time to record two videos per week? Thats insane, I thought you were a full time KZbinr. I can barely find time to brush my teeth and I'm not even recording videos lol.

[@shadowtheimpure]

He only has 100K subs, he's still too small to reliably be a full time content creator.

[@AmericanTerminator]

@@shadowtheimpure 100k subs is still a lot of subs

[@shadowtheimpure]

@@AmericanTerminator A lot? Yes. Full time money? No.

[@nynyny7]

There actually are PLCC sockets with staggered pins. They were notoriously used by Atari in the ST. They're hard to find, though. But for sure it would be easier than getting a Killy PLCC clip.

[@troelshansen6650]

For Atari parts check best-electronics-ca.com/ if a similar socket was used in Ataris there is a good chance its there

[@theannoyedmrfloyd3998]

Do what you can when you want. You're not beholden to anyone for videos. Always remember to have fun and make backup copies of any footage you record. 😉 Those ICs you got are very useful for repairing classic arcade game boards!

[@CrazyHamSales]

Really? Arcade games use those? I had no idea, they had just been in my drawer of odds and ends components for something like the last 10 years and they were probably in the last guys collection as long as that. I just figured logic chips, right up Adrian's alley.

[@marcelhh2101]

Jou could create a small sandwich board with KiCad and let it make bij JLBPCB or PCBWay.

[@pANZERNOOb]

I was thinking of suggesting that as well, the original pin sockets on the accelerator card are probably trashed anyway, why not remove them and fit an adapter pcb in the space where the old sockets were.

[@d2factotum]

@@pANZERNOOb The problem is, how is he to know what the pinout would be? Given the Killy clip has offset pins it's not obvious which pin on it connects to which pin on the 68000 CPU.

[@pANZERNOOb]

@@d2factotum Fair enough, though I'm sure that someone can look at the PCB layout for the accelerator and work out what pins go where, you don't even really need to work out all of them if you can figure out the basic ones like power, clock, and reset so that you know exactly how the pins are offset for the rest of the connector.

[@kasamikona]

@@d2factotum When they're staggered like that, there's only really one sensible way for them to connect to the single row on the chip. I'd be more concerned with the "evenly lined up" new socket's pinout, but these are standard so should be very easy to find pinouts. Failing that, if you have one in hand you can buzz it out.

[@ActionRetro]

Wow that accelerator is gorgeous

[@sittingstill3578]

It could be the foundation of a “Blessed Mac” series. 😁👍

[@AngeloTelesforo]

Will it fit the cursed Mac??? 😝

[@ToTheGAMES]

Action Retro yeah sure does! Has yours arrived yet from Germany? ;)

[@ActionRetro]

@@ToTheGAMES It has!! And it's a doozy lol

[@kooziesan]

Don't apologize! Just keep making great content 👍

[@tombarber8929]

You, Tech Tangents, and Perifractic are all so close to 100k!

[@Walczyk]

perifractic is a joke

[@ToTheGAMES]

@@Walczyk why? I like them. Can you not handle the puns? :)

[@Walczyk]

@@ToTheGAMES his commander x16 design looked like an xbox 360 rip off and he has no skills with a soldering iron

[@tombarber8929]

@@Walczyk It doesn't look too much like a 360 to me besides the fact it's smallish and white. Also you don't need skills with an iron to be knowledgable/entertaining, LGR for example I'm pretty sure has absolutely 0 skills with an iron, but I still enjoy his channel.

[@Walczyk]

@@tombarber8929i absolutely love lgr, i really am irrational with my disilike for perifractic i think. i have this suspicion that he didn't actually design the commander x16 case, he had someone do it for him. it's bizarrely generic and has zero retro appeal.

[@paveloleynikov4715]

Hobby shouldn't became full-time torture! Keep you sanity ;)

[@MrWaalkman]

Chips as old as you? We'd have to go back to tubes for me...

[@SCSISama]

Hey Adrian, the Atari ST line uses the staggered plcc sockets for therir cpus, mmus, glues and blitters. On some forums they call these funky sockets.

[@MrCerial]

www.exxoshost.co.uk/atari/last/blitter/index.htm Here you can get the Adapter, I'm just now having my Atari-ST motherboard here in front of me with exactly the same socket 😁

[@JohnGotts]

Adapters are still available.

[@skonkfactory]

I'd suggest beeping out the pins and making an adapter from PLCC to the adapter board.

[@amirpourghoureiyan1637]

probably could solder paper clips to the adapters he has in order to make it reach the pins, could even solder it in place of the header so the mac board's unchanged.

[@smunaut]

* You could make a PCB to adapt one pin layout to the one you need. * Resistor could be the bleed resistor for the high voltage DC capacitor for instance

[@Dukefazon]

I like the idea, I think a custom PCB could work.

[@CheshireNoir]

ExxosUK has developed one for the Atari ST that used a similar "odd" pinout. Documented here as the "Funky PLCC 68 adapter". www.exxoshost.co.uk/atari/last/blitter/index.htm He even sells them, and I believe you'd be able to use it directly. the 68000 is a 68pin PLCC according to Wikipedia.

[@matthewbriggs9137]

That 68030 probably was underclocked due to cooling issues. Space may be a big issue with a PCB?

[@ikke1981]

Don't worry about the schedule Adrian. Take care of yourself first and then the channel.

[@AngeloTelesforo]

35:01 I just dip the tip on solvent when I’m gonna use it again. I always have paint solvent nearby cause I have a model building hobby.

[@MattLarose]

Always happy to wait a little longer for my ADB fix, Mr. Black. Perhaps skipping a week on the mini mail call videos, so you have them done by saturday but release on wednesday might work better for your schedule? In any case, Keep on keeping on!

[@ConnerBurns]

Even if you went back to only doing sporadic light bulb teardown, I'd be tuning in each time. Thanks for the awesome content Adrian!

[@therealtaintkicker]

Instead of paint pens, try using a grease pencil (aka china marker). You can get different colors, work well on plastic, and you don't have to shake them.

[@thesillyhatday]

I bet CPU Galaxy knows what to do with that expansion board!

[@DanPellegrino486]

That channel is gonna be huge soon too.

[@ToTheGAMES]

@@DanPellegrino486 yeah, his collection is insane. Really like his knowledge too. Well studied guy.

[@joachimoswald4853]

Hello Adrian, I appreciate every single video. Thank's a lot. Regarding non fitting CPU socket: It may fit an MMU / Glue Socket from the Atari ST line - these has as I remember similar / same pinout shape.

[@darkwinter6028]

FWIW, the 68000 is in a Quad Flat Pack package (or QFP for short). The socket is indeed a PLCC. You might try looking for a debugging clip for a QFP. The ones I’ve seen have been kinda expensive, though. Another possibility might be to make an adapter out of some custom PCBs with castellated edge pads, pin headers; and then relocate the QFP 68000 off the motherboard. It’ll require a bit of soldering finesse; though. 🤔

[@ScrotumPole]

Nice lighting very moody, please don't apologise for your video production, work comes first. I am sure we all understand. xxx

[@akaJughead]

I wonder if storing the paint pens tip down would help?

[@Renville80]

The 54xx series of chips are the industrial version of the 74xx logic chips, meaning they can stand up to more extreme environments than the standard chips. They are pin for pin compatible. There are three temperature ranges for ICs: -55 to 125 C, -40 to 85C, and 0 to 70C. Aerospace, industrial, and commercial respectively. Oh, and that blue DIP is a resistor pack.

[@bradandrews7823]

'The Crazy Ham", Scott, was generous to me too, several years ago when I drove to Minnesota to buy a pile of old Motorola police radios from him (way too heavy to ship) and wound up with the truck bed full of treasure. His basement was like so many of ours, full to the brim and then some with old bits and pieces. It's hard to discard something that is still working or capable of working with just a little effort! It's always gives a satisfying feeling when one can give some of it away to a good home.

[@charlesjmouse]

Do look after yourself old chap. On the subject of an adaptor for that accelerator I guess you have three options: Easy - Find the correct PLCC socket - yeh, right! I'm sorry to say those clips are almost certainly proprietary and so are rare as unicorn poo. Proper - Design an adaptor PCB to interface a SMT (for clearance) socket to some turn-pin headers to fit the board - accelerator pin-out? Bodge - Remove the CPU adaptor headers from the accelerator board. Solder some single core wires to the shoulders of the main board CPU - very fiddly! A little hot glue at that point to support the wires and prevent shorts is a good idea! Place accelerator over the main board and wrangle the ends of the wires through the holes left from removing the headers and solder in place... ...the last option is likely the one I'd go for as I'm often too impatient to wait on PCB's unless I really have to make one. Obviously not for the faint of heart and you'll have a devil of a job diagnosing any issues. It would be easier to remove the motherboard CPU first but I'd advise against that as a lot of these accelerators don't just 'replace' the motherboard CPU, it's more a case of initially booting off the motherboard CPU and handing off to the accelerator.

[@AngeloTelesforo]

I organize my fodder this way: I have some small drawers setups (I 3D printed some, but you can find that at dollar stores) with numbers on the drawers. Then I have an excel spreadsheet where I just put item / type / description (optional) / drawer number. Then I use a pivot table with the filter selected to _item_ or _type_ to locate the correct drawer(s) when I need an item. This way I don’t need to create categorized drawers. They are just a mess, but I have what’s inside in the spreadsheet.

[@mapesdhs597]

I bet you backup that spreadsheet pretty often. ;D

[@jdrago1968]

This is one of my favorite KZbin channels keep up the good work! I am looking forward to 100K subscribers.

[@Peter_S_]

I'm not sure what the SC414075 code breaks down to but I believe the S in SC denotes a "step" and the 414075 is the 50MHz capable mask set for the 68030. Wild speculation would say these parts may be engineering samples and exist as the stage prior to full production prototypes. Back in those days, faster 68K chips and 56K DSPs were a very hot commodity and lots of pre-production parts made it into low volume products. The XC stands for production prototype and when chips were being introduced for volume production, all the sample chips they sent me came with XC or XSP part numbers. I worked with a lot of Motorola DSPs and 68K chips back then and I recall seeing only a couple SC parts, and only on high end 68K accelerators.

[@SidebandSamurai]

Though what you said about the metal adjustment tools might be true. The real reason you need plastic adjustment tools is metal will throw off your adjustment, making it a pain in the a** to get it just right.

[@Stjaernljus]

Exxos plcc funky might work as an adapter for the accelerator card, not sure if they are still available one could ask.

[@SteveCaruso]

Hey Adrian, sorry to hear you couldn’t get the accelerator hooked up but I’m glad you had a good time checking it out anyway! I feel a little better about not being able to get the Killy clip off my board knowing that it’s probably glued down... but if anyone has any ideas on how to release it I can give it another try! Also interesting to know that it might not have been connected to power correctly. I just assumed it was right since it came that way in the Classic, but who knows. Maybe it’ll spring back to life once it gets some proper power!

[@shadows9001]

Yes! Been waiting for this. Bored as heck at work!

[@CandyGramForMongo_]

Break out the CAD and design a PCB to replace the adapter.

[@ZiggyTheHamster]

On the topic of organizing - PartsBox.io plus IC tubes is the way to go. Jameco sells tubes very cheaply.

[@LuxorVan]

If you could figure out the pinout on the card you could combine a surface mount plcc connector and a small custom pcb with pins for plugging into the card.

[@chadsmith8476]

Those are called "TV Tweakers" in the Biz

[@MichaelEhling]

Those prices Killy your wallet.

[@twocvbloke]

It's always a nuisance when people manufacture things using non-standard parts that are hard to find or utterly obsolete, but then, I guess they never expected someone in 2021 to be using their accelerator boards either...

[@adriansdigitalbasement]

Yeah indeed -- I can't really fault them. Those Killy clips were used somewhat frequently back then to attach boards on top of chips.... so it was the norm. They are just lost to time :-)

[@Schattiz]

You have such a calming voice, love theese vidoes when Im stressed out. Thanks!

[@dhpbear2]

28:20 - Goes into the '100-Ohm' resistor drawer :)

[@SomeMorganSomewhere]

27:40 - 74 vs 54 - 54 series are milspec, otherwise they're identical

[@eebaker699]

Correct. Also used widely in the automotive industry. Basically the 54xx chips have a wider temperature range. I think if it's Raytheon branded it would be in military use.

[@Natures_Intentions]

the mail unboxing videos are awesome

[@alanedwards8834]

Very quickly becoming my favourite and most anticipated content on all of KZbin! Weekly, fortnightly, bi-weekly, monthly, whatever works for you works for me!

[@bobsbarnworkshop]

Back in my college days late 70’s I built a digital roulette wheel with a 7490, 555 and a 74154 driving red led’s. I don’t have any docs but it was one of my first circuit designs! So hearing you have some jogged my memory!

[@Drewsalems_Lot]

This vid had 9k views in under 8 hours! I love your work Adrian, your style and your humour. Makes me think of school 35yrs ago with Apple IIe's (and playing Pooyan in colour). Wishing you the 100k nudge over 😃

[@falken_gt4]

Just last night I was looking for the 50MHz 68882 FPU for my Blizzard Amiga 1200 68030 50MHz board. It allows for up to 128Mb 60ns 72pin SIMM

[@kayneahnung3661]

I do have a working Pak68/3 complete with FRAK, that is basically the same thing for Atari ST :-) same CPU, same FPU, same frequency, but I do have an additonal 2-Slot ISA-Connector attached to it (yes in an Atari 520ST+) :-D

[@Mickeyjuice]

Might sound silly, but I use Wine Glass Writers on my stuff. They're bright and are soft-tipped like regular sharpies. Can be scratched off, but takes some effort (or alcohol)

[@aqualung2000]

I definitely don't claim this to be the best way but I organize my chips by class. So I'll put all regular 74LS go in one drawer. 74HC in another. 74ALS in another, 74HCT in another, etc. (My 74AC drawer is quite empty!) Non-logic chips like a TL7660 I would just throw in with the 74HC stuff as standard CMOS (most of my collection is TTL anyway so I have space.) And then of course custom Motorola/MOS chips get a "custom ICs" drawer, etc.

[@hannescamitz8575]

Those were the days when as a kid you were dreaming of 68030/40 or the 68060 80MHz, but you like your kidneys more than computation power. As an old Amiga guy, I dreamt of the 1260 back in the days, but it costed about 900-1200EUR in the 90`s. But as my A1200 freezing after a while when using it, it just rests in the basement. 😭

[@TomStorey96]

Look for a PLCC socket with a 1.27mm pitch. These will have staggered pins as opposed to a square 2.54mm grid. Maybe that will work.

[@tw11tube]

You are right: 54-series logic chips are identical to 74-series logic chip, but specified for the extended military temperature range (-55°C - 125°C / -67°F - 257°F) instead of the commercial temperature range (0°C - 70°C / 32°F - 158°F). Some data sheets list the 54-type chips as less powerfull (less output current) than the 74-type chips, but I suspect that inside the narrow commercial temperature range, 54-type chips are able to deliver the same power as 74-type chips, you just have to derate them at high or need to consider higher impedance at extremely low termperature.

[@TheXJ12]

What did you say '154 were ? BCD to decimal decoders and drivers ? I think they are "4-to-16 line decoder/demultiplexer, inverting outputs", identical to '138 but with 4 bits instead of 3. I fried the one on my Apple //e ages ago as they select expansion slot DEVx pin 41

[@wishusknight3009]

He can remove the PLCC adapter from the other motherboard by putting it in the freezer for a few minutes and gently applying pressure. Others find gentle heat works too. My SE/30 has an 040/33 with 128k cache. And it also has the vertical Radius Pivot accelerated color graphics card for an external monitor that I have for it. The accelerator uses the 16mhz motherboard ram, but the CPU's external cache runs at cpu clock. So it isn't hobbled to badly by it. And when using the FX rom the motherboard ram is zero waitstate. It nearly keeps up with an 840/AV.

[@JohnGotts]

As I've mentioned before, in the late 90's to early 2000's it wasn't uncommon to spend $3,000-$5,000 on decent computer stuff. At that time companies were beginning to produce the absolute crap they make today, but I have a Sony laptop from that era that cost $3,200 ($5,000 in today's money) that still works fine today. You had to make a choice between your $4,000 Thinkpad (more than I could afford) that would still work fine in 2021 or your $500 eMachine or $750 Packard Bell that's probably been in a landfill since 2005. They stopped making good stuff, and people dispose of computers/tablets/phones in a few years. Most of the retro stuff you're featuring on this channel is from a different era, and cost thousands of dollars because it still works well today. On the flip side, LGR often features the absolute crap, because it's good for a laugh.

[@RudysRetroIntel]

74 is comsumer chips 54 is military versions. They are each exact specs and each is tested. I have lots of chips too and use these cabinets with little drawers. Each on is labeled for easy finds. Hope this helps. Oh, also military chips work in lower and higher temperatures. For home computers they are more than fine but don't pay more for them:)

[@AgentOrange96]

A lot of times IC's will be shipped in special plastic tubes. I'm sure finding some wouldn't be too hard for organization. I have a tube with some AMD ROM chips that says "Advanced Micro Devices Inc" with the AMD logo on it that I really like! xD And speaking of, that AMD 54XX logic chip is indeed a military grade spec. Otherwise, it's the same as 74XX. At least from what I read up just a couple weeks ago or so. That would apply to all manufacturers, so SN54XX would be a thing too.

[@SidneyCritic]

If you can adapt to the headers on the card, just get an adaptor PCB made. If you can't, maybe remove the headers and make an adaptor, or remote mount the card with wires. Paint pens are always a pain, but Sharpie metallic colours, ie, silver gold, work like a normal Sharpie.

[@professor-josh]

The people who made these accelerators were spaceflight fans: Mercury, Gemini, Enterprise, Voyager, Magellan. I guess Apollo was taken, lol.

[@jjdigitalvideosolutionsllc5343]

Commodore made a prototype dual-030 card called Gemini. Are there any other cards for Amiga/Atari/Mac that use multiple 030s? The only other multi processor boards that comes to mind are the CyberStorm PPC/060 and Blizzard PPC/060 cards.

[@dieSpinnt]

Waaaaaaaaaaiiiit Adrian, Waaaaaaaaaaaiiiit!!!! :) This 5V AVR-based transistor tester can't test triacs or thyristors, has problems with Darlington-transistors and Power-MOSFETs. So please don't be too fast throwing parts away. Look at the part-numbers first and test unsure candidates the good old way. And there are power resistors in TO-2xx transistor packages out there, too. Oh, and thanks for the great video!:)

[@Calphool222]

I organize my chips by using three or four "small parts" bins like you get for keeping screws and whatnot organized in a garage. Leave the family out of the part number, so 74LS04 becomes 74*04. Then just put all the different families together in one bin. A lot of times you can use them interchangeably anyway (LS and HCT for example are mostly compatible), and if you try to divide them by family it uses way too many boxes too quickly.

[@PatrickDunn13078]

Adrian we had two of these type of cards, I can’t remember the brand but we had one in a Mac SE (not se/30) and in a Mac Plus. Made a big difference in getting stuff done until a couple of years later when we went to the LC III and Quadra 605 in the office. Then after that we went Power Computing and Radius 81/110 which I still have, last I knew it worked when I fired it up about 4 years ago. Love watching stuff that I use to work with all the time. When we got the first card for the Mac Plus 128 I had to go to sears to get a long torx bit screwdriver just so we could open the case.

[@simonmichaeluk]

Dear Adrian, Check your your business email on KZbin. i have sent you information on the PLCC sockets with offset pin layout. It's an adapter board that possibly could be used to replace the socket on the accelerator card and push on top of the CPU on board. with careful planning This item may have exactly the same distance as the old method. The email i sent you has the subject line of "PLCC Offset pin sockets", This information should help you identify my email. Best regards Simon

[@johnboynb]

I had a Classic in 1990, and I was offered an accelerator for free. it simply increased the clock speed from 8 mhz to 16 mhz. The person that helped me install it broke something and I ended up paying $ 400 to fix it anyway. It worked, but it eventually became unstable.

[@BertGrink]

Tired of Mail videos? Perish the thought!!! 54-series TTL ICs are "industrial" temperature range, i.e. somewhat extended both in the high and the low temp. range; mil-spec are even more extended.

[@jameslewis2635]

Admittedly I don't know much about the electronics involved, but if the layout of the pins on the accelerator board match that of the back of the PLCC socket you have, why not de-solder the existing connector and replace it with the standard PLCC socket? Otherwise you could possibly experiment with extending and bending the pins on the PLCC socket to match the layout of the KILLY clip in the picture.

[@StrapMerf]

Idea for replacing the killy clip, make 2x PCB, 1 PCB has the standard CPU clip soldered on, going to a a set of pin headers around the outside of the clip, 2nd PCB clips(or solders) on top of the first(via the pin headers) and has another row of pin headers to fit the accelerator.... The floppy connector need a small ribbon cable to join the board. Then a hand full of plastic standoffs to hold it up the increased height. The card would sit a bit higher. But hopefully wouldn't foul anything......

[@spokehedz]

I bet that a very thin PCB could be made that would 'adapt' between the pin placement of the two sockets. I could imagine that the pin signals would be very, very close, and it might have to be done on a thinner-than-standard-PCB-material is made out of... hmmm... I would be willing to take a look at it, if I could get some high-res images...

[@jean-lucpicard8186]

Don’t worry about fewer videos, I know all about time constraints as a college student. For the chip issue I would recommend a bin wall like Voidstar Labs built a while back for storing his stuff, just maybe a bit less fancy. Label each with a part number, and put them in. That also means you don’t need a database of chips, which is a big time-saver. If you do want to database them, I would happily try to make the system for you, so you could just enter the chips’ info and a quantity, and it would do the rest. We’ve got a similar system at our house for the groceries in the freezer(s). Unfortunately I’m in Upstate NY, otherwise I would offer to stop by and help you sort through all of them.

[@davefarquhar8230]

I dealt with some Mac accelerator boards in the late 90s (PPC era). They were expensive too. Companies often had budgetary tricks they could play, so they couldn't replace a machine, but could spend outrageous amounts upgrading it. On paper they saved money even if they didn't really save anything. That was what the dealer I got parts from told me.

[@666lordofdestruction]

Hey Adrian, do you think you could put some temporary bodge wires between the accelerator card and the Mac mobo? I mean, it won’t be elegant, but it might be enough to fire it up to test it.

[@FordGT40MkIV]

On your accelerator board, what you need is an interposer, but with the limited height available it gets more interesting. The basic idea is a PCB that connects to both the existing CPU (likely via the PLCC socket you bought) and the accelerator board at the Killy clip receptacle location. The PCB will perform the mapping of all the signals between the two. Given the available space, you may need to remove the Killy clip receptacle from the accelerator board and install 'zero height' socket pins in its place. The two hurdles will be 1) figuring out the mapping; and 2) dealing with the inevitable co-location problem of pins on both sides needing to use the same hole location. You might be able to use ribbon cables to move the interposer out from between the two boards, making it more physically possible, but the signal quality would likely suffer significantly. I hope this is possible and that you have the time to give it a try. Good luck!

[@KyleJ61782]

So if you look on Digikey, they have 68 pin PLCC test clips that use staggered pins: www.digikey.com/en/products/detail/pomona-electronics/5401/737286 Of course the issue here is that it seems like the clip is way taller than the Killy clip would have been, so perhaps it would make the board too tall. But if it isn't too tall, perhaps adding some modified standoffs to ensure board stability?

[@sbfarmer8]

I installed one of these in 82 or 83 I dont recall a driver. and 040 was possible. its also my recollection that the se30 was not faster the ram was not cheap either,. I knew a guy that spent $16,000 on ][fx ram

[@IanSlothieRolfe]

54 logic chips are the military extended temperature range versions of the 74 chips. They are largely compatible, although a very few do have slightly different pinouts!

[@gezalucz6128]

Looking at the Killy adapter, probably you can design a PCB with through-holes that fit the other adapter you bought plus holes for the staggered row. One set of pins will be pass-through, the others you solder in and clip off. The clipped-off ones are connected with a trace to the staggered rows into which you solder pins prior to adding the plastic adapter. Depending on how thick your PCB is and how small you make the solder joints, this could be as thin as 2-3mm

[@bobsbarnworkshop]

Get a plastic drawer cabinet, and place the 74 series chips in groups of number ranges in each drawer, that way you can at least know which drawer to look in... should narrow it down a lot! Do the same with 40 series chips!

[@artstrutzenberg7197]

Out of curiosity, how often are 74XX dips used in this day and age? Also when I was in school, the digital tech lab would sort their parts out using a series of small part storage units (Same units that would be used for bolts/screws etc? did a quick amazon search and spotted Akro-Mills 24 drawer cabinet? perhaps a series of those + blue painters tape to label/ID each drawer [makes it easier to repurpose/relabel a drawer]

[@lexluthermiester]

@Adrian's Digital Basement Those Sharpie pens have another very useful characteristic: They can be used as a solder mask to cover up repaired traces as the paint is an insulator once dried. Have fun!

[@questionablecommands9423]

I remember that there's some easy to use OCR tooling out there. If you have any development or shell scripting experience and you can come up with a way to systematically photograph your ICs, it should be pretty quick to build a DB of all your chips.

[@skuyvenhoven]

Hmm, nice pile of old chips... maybe some parts to build an Apple Computer 1? Love the videos, keep it up, don't worry if you can only post one video per week, your efforts are greatly appreciated.

[@JoeCdaYT]

I would say it would not be to hard to use a service like PCBway to make a new board using the current PLCC sockets and adapt to the old Killy pinout. If I remember it right the pins were stagered so that when it was on the chip you could know easily which pin you were connected to for diagnostics. If I had a layout of the Killy connections on the PCB I could make an adapter for your purposes. The only issue is that my work makes it hard for me to sit down long enough to do it. Sometimes out till 10PM before I get home. Great vids Adrian, keep up the good work.

[@tw11tube]

Mains voltage over a resistor makes perfect sense if that resistor is a bleeder resistor that is used to discharge the RF interference filter caps between live and neutral. The resistor will have a quite high value, typically 220kOhm or 470kOhm, but they are usually present to prevent you getting zapped from the filter caps after you unplugged the device with mains turned off.

[@zoranmarinkovic4706]

These zig zag sockets used in Atari ST, try to find on Exxos or someone Atari driven... I think that Exxos have adapter for zig zag instead of socket

[@ryanbusch4015]

Adrian, hit me up for a list of old new stock 74 logic chips i have on hand if you want. also have a crap load of older transistors and a few Roms and a few 8080s if that's useful. not much older ram :( i need some 4116 for a commodore pet 4016 im working on.

[@alisharifian535]

I have a suggestion:desoldier kely headers from board and soldier the 68000 socket to 68030 board using some wires.

[@Peter_S_]

54 = Military spec 74xxx