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.
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!)
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.
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!
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.
Very quickly becoming my favourite and most anticipated content on all of RUclips! Weekly, fortnightly, bi-weekly, monthly, whatever works for you works for me!
@@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.
@@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.
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 😁
* 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
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.
'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.
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!
Adrian, your videos are so good and you are such a genuine person that getting a video of yours, no matter how long it takes, is a gift, in my eyes. I am appreciative of all of the efforts you put forth and I am quite content to wait for your high quality videos, whenever they get released. Thank you Adrian for your videos, as always. We love you! Fred
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 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.
I have used those plastic adjustment tools for adjusting the coils in diplex filters many years ago. The allen key fits into the ferrite core. They are great because they don't give any interference and they don't damage the fragile cores. Awesome channel!
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.
@@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.
@@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.
@@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.
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!
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.
14:25 my understanding from "back in the day" the PDS for SE/30 and the IIsi are exactly the same but have a different orientation (vertical vs horizontal). IIRC there was even a 2 slot PDS adapter for the IIsi available from a third party manufacturer. The stock IIsi PDS adapter from Apple was basically a pass-through (that changed the orientation) with a place for the FPU.
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 😃
At 10:30 you mirror the socket orientation from what it should be. First you match it the right way up, and then you flip it over mirroring it, but not re-rotating it to match the corner notch.
716 Is my hometown, Buffalo, NY!!! And I totally understand about sometimes not being able to do two videos a week. For one I appreciate anything you're willing to share of your knowledge, and secondly, a man's gotta eat!
Don't sweat it my dude! I say focus on quality time with your loved ones and refill your energies. The content will be better and you will enjoy more your hobby! It is a slippery slope to be so passionate about something and end up with another work shift trying to fulfill arbitrary goals on things that were supposed to be a way to vent off frustration.
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.
Man, your content is awesome! Keep healthy and you could alternate one mmmc and one regular episode once a week, or whatever you want, or can do. Just keep em' coming when you can. We will be here! Thank you for your fantastic work!
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.
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. 🤔
Thanks again for the video! And real life takes always priority, so don’t stress yourself out over getting two videos out a week. Good things are always worth the wait.
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.
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!
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.
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.
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.
The reason you have to press on the tip of the oil pen is to even out the pressure difference between the inside of the pen and the outside air. If not, too much paint could stream out when you try to write with it.
Our techs used plastic boxes with small drawers and put a label on the drawer front, The Dip chips were stored in numerical order above the bench. System also works in bookcases or storage cabinetsm where for a storage cabinet the door would have a sign for rangge of chip numbers enclosed.
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 RUclipsr. I can barely find time to brush my teeth and I'm not even recording videos lol.
The silver and gold metallic Sharpies work great on ICs and the markings are highly visible. Also, ferrite core chokes and transformers are adjusted with plastic tools to not affect the tune while adjusting, not because of a shock hazard.
You could get sockets with diagnonal alignment of the pins there! I had a problem trying to find one of those for an Atari ST Blitter years ago, still got one spare - checked it now and yes it has diagonal pin alignment. But the Blitter has a different pin count to what you need I think. You could make a small adapter PCB too. Regards the damaged socket there - they look like something I just did on a video going up soon, cut a DIP socket into 2 strips (ie. remove the bars from inbetween the two sides, take those 2 strips and use them to replace the 2 strips on each side of existing connectors.
Do you recall what brand the socket is? I was looking at Digikey and there seemed no quick way to figure out which are using the normal pinout and which are diagonal.
@@adriansdigitalbasement I am not sure they are still manufactured! Exxos (he has a forum of the same name) created an adapter for use with the one in the ST for that reason. I had a quick look on eBay but they all seem to be the standard alignment, as you had found. So I think unless someone out there (maybe one of your viewers may have one yet?!??) I guess the only option would be to design an adapter PCB =/
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!
@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!
On the accelerator: You may be better off getting an adapter PCB stack-up made for a modern clip. Not sure if there's the vertical room in the old mac for that.
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.
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)
I think you can use surface mount pllc sockets and kind of freely bend the pins. Maybe a 3d printed backplate to secure the pins in position before you press on it.
Thank you for the tenacity to do two a week. I barely had enough to do one. A tip, take time on the weekend to make a crapton of them, edit them up, upload videos as private and set them to release on a particular day. Try to get a queue going so when things get busy you don't have to worry as much.
@Adrian , Not sure if this has been suggested, but what about hacking a standard IC socket in place of the damaged socket connection on the accelerator card? I can envision maybe doing some tracing and rewiring to be compatible with a PLCC socket you place over the stock Classic's CPU. The vital step is to trace and retrace your connections to prevent problems.
The 54 series is the military equivalent of the 74 series. They are usually still manufactured/available with long term sourcing guarantees, cost a small fortune for what they are, and are still frequently used in new military designs.
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
The extra video will be missed, but my life will be going more back to "normal" anyway, so I won't be home watching youtube nearly as much anyway. Thanks for all your hard work!
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
Awesome stuff on the mini mail call! I hope(as all of us do) you get the special Killy Socket you need to get that Mac accelerator card working again. That would be a awesome video on how much more performance you get out of that Mac classic. The Sharpie Red paint pens are also a nice addition indeeed for your IC Chips indeed.
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.
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.
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.
You could 3D print an adapter with channels for pins and wires to connect the killy socket to the standard PLCC socket. It would be annoying to draw all the wires through but it would work.
A resistor across the AC line is pretty common, they're used to discharge X/Y rated EMI suppression caps. You can get a case of the tingles if you touch the blade after unplugging stuff otherwise!
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.
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.
Use a "bolt bin" or if you want to get fancy a set of tool drawers with antistatic foam inlays to set the good chips in just label the outside 1,2,3 ect. and use an excell sheet to keep track of what's in each drawer
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.
For that PLCC slot, you should desolder the broken clips; find a PLCC socket with longer leads (so they make a wire wrap socket?) and line them up and solder them.
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.
Could you de-solder the connectors on the accelerator board and somehow jerry-rig wires to the more standard adapter and then just plug the socket into the board. It won't be a snug fit so the new mother/daughter board likely wouldn't fit back into the original case but at least you could run it.
Hi! Great content! I surfed around and found a PLCC socket with the pin traces on the bottom exposed, it looks like you should be able to bend the inner pins so they get staggered enough to fit the socket on the expansion card.. I cannot paste the link to the exact search i made, but if you look for sockets made by Augat you might find what i found... Hope it helps..
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:)
Regarding the offset PLCC socket.... The Atari ST has exactly the same problem, it has space to put a 68pin blitter chip but the motherboard is laid out for 'offset' pin type arrangement. On the Exxos atari site, exxos calls this the 'funky PLCC socket', and designed an adapter. I think it might be possible to solder the adapter to a regular socket and then solder some pins on. Then on the accelerator card, removing the broken pin sockets and replace with single strips of (i assume) 0.1inch sockets.
![I.N "HALLUCINATION" | [Stray Kids : SKZ-PLAYER]](http://i.ytimg.com/vi/n5B5q1Hwt_U/mqdefault.jpg)
Please, Adrian, do not apologise for not producing two videos per week. Your fan club is quite loyal.
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.
Definitely.
And we also have Noel and Ben and...
Agreed 100% i'd rather have 1 video a week, instead of him end up burned out, and then no videos at all.
1 Video with a happy Mr. Black are far better then two with a non happy one . Please dont push it too hard.
I realize it is kind of off topic but do anybody know a good site to stream new movies online ?
Wow that accelerator is gorgeous
It could be the foundation of a “Blessed Mac” series. 😁👍
Will it fit the cursed Mac??? 😝
Action Retro yeah sure does! Has yours arrived yet from Germany? ;)
@@ToTheGAMES It has!! And it's a doozy lol
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!)
They tend to work more quickly if you store them tip-down too! Nice gift!
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.
For Atari parts check best-electronics-ca.com/ if a similar socket was used in Ataris there is a good chance its there
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!
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.
Very quickly becoming my favourite and most anticipated content on all of RUclips! Weekly, fortnightly, bi-weekly, monthly, whatever works for you works for me!
You, Tech Tangents, and Perifractic are all so close to 100k!
perifractic is a joke
@@Walczyk why? I like them. Can you not handle the puns? :)
@@ToTheGAMES his commander x16 design looked like an xbox 360 rip off and he has no skills with a soldering iron
@@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.
@@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.
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.
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 😁
Adapters are still available.
* 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
I like the idea, I think a custom PCB could work.
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.
That 68030 probably was underclocked due to cooling issues. Space may be a big issue with a PCB?
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.
All your vid's are true gems for the retro community Adrian ... quantity doesn't matter!
Don't worry about the schedule Adrian. Take care of yourself first and then the channel.
Don't apologize! Just keep making great content 👍
'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.
What’s hiding under the 70s towel? Keeping a future video topic under wraps? 😀
why is your username all fancy like that? : )
Future content yes :-)
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!
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!
Adrian, your videos are so good and you are such a genuine person that getting a video of yours, no matter how long it takes, is a gift, in my eyes. I am appreciative of all of the efforts you put forth and I am quite content to wait for your high quality videos, whenever they get released. Thank you Adrian for your videos, as always. We love you! Fred
You have such a calming voice, love theese vidoes when Im stressed out. Thanks!
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
I thought it was a way for you to advertise some :)
@@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.
@@CrazyHamSales No worries ^^
I have used those plastic adjustment tools for adjusting the coils in diplex filters many years ago. The allen key fits into the ferrite core.
They are great because they don't give any interference and they don't damage the fragile cores. Awesome channel!
Jou could create a small sandwich board with KiCad and let it make bij JLBPCB or PCBWay.
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.
@@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.
@@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.
@@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.
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!
Don't worry about the video scheduling, Adrian. We enjoy the content and what's most important is that you're not burnt out or not enjoying it.
This is one of my favorite RUclips channels keep up the good work! I am looking forward to 100K subscribers.
I'd suggest beeping out the pins and making an adapter from PLCC to the adapter board.
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.
14:25 my understanding from "back in the day" the PDS for SE/30 and the IIsi are exactly the same but have a different orientation (vertical vs horizontal). IIRC there was even a 2 slot PDS adapter for the IIsi available from a third party manufacturer. The stock IIsi PDS adapter from Apple was basically a pass-through (that changed the orientation) with a place for the FPU.
28:20 - Goes into the '100-Ohm' resistor drawer :)
I wonder if storing the paint pens tip down would help?
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 😃
At 10:30 you mirror the socket orientation from what it should be. First you match it the right way up, and then you flip it over mirroring it, but not re-rotating it to match the corner notch.
716 Is my hometown, Buffalo, NY!!! And I totally understand about sometimes not being able to do two videos a week. For one I appreciate anything you're willing to share of your knowledge, and secondly, a man's gotta eat!
Don't sweat it my dude! I say focus on quality time with your loved ones and refill your energies. The content will be better and you will enjoy more your hobby! It is a slippery slope to be so passionate about something and end up with another work shift trying to fulfill arbitrary goals on things that were supposed to be a way to vent off frustration.
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.
I bet you backup that spreadsheet pretty often. ;D
Man, your content is awesome! Keep healthy and you could alternate one mmmc and one regular episode once a week, or whatever you want, or can do. Just keep em' coming when you can. We will be here! Thank you for your fantastic work!
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.
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.
🤔
Thanks again for the video! And real life takes always priority, so don’t stress yourself out over getting two videos out a week. Good things are always worth the wait.
Exxos plcc funky might work as an adapter for the accelerator card, not sure if they are still available one could ask.
the mail unboxing videos are awesome
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.
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!
Nice to get my old Mac fix, never had one but a friend had a Mac Classic when they first came to the UK. remember it well. would love to get one.
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.
Yes! Been waiting for this. Bored as heck at work!
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.
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.
Hobby shouldn't became full-time torture! Keep you sanity ;)
The reason you have to press on the tip of the oil pen is to even out the pressure difference between the inside of the pen and the outside air. If not, too much paint could stream out when you try to write with it.
Our techs used plastic boxes with small drawers and put a label on the drawer front, The Dip chips were stored in numerical order above the bench. System also works in bookcases or storage cabinetsm where for a storage cabinet the door would have a sign for rangge of chip numbers enclosed.
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 RUclipsr. I can barely find time to brush my teeth and I'm not even recording videos lol.
He only has 100K subs, he's still too small to reliably be a full time content creator.
@@shadowtheimpure 100k subs is still a lot of subs
@@AmericanTerminator A lot? Yes. Full time money? No.
it looks like there seems to be enough height to make a little adapter PCB in between the accelerator board and a regular PLCC socket (maybe SMD?)
Thanks for your time and hard work, so it's definite have enough time for rest.
The silver and gold metallic Sharpies work great on ICs and the markings are highly visible. Also, ferrite core chokes and transformers are adjusted with plastic tools to not affect the tune while adjusting, not because of a shock hazard.
I’ve got some paint pens and they seem to work much better if stored tip side down. I keep them in an old jam jar to keep them oriented.
You could get sockets with diagnonal alignment of the pins there! I had a problem trying to find one of those for an Atari ST Blitter years ago, still got one spare - checked it now and yes it has diagonal pin alignment. But the Blitter has a different pin count to what you need I think. You could make a small adapter PCB too. Regards the damaged socket there - they look like something I just did on a video going up soon, cut a DIP socket into 2 strips (ie. remove the bars from inbetween the two sides, take those 2 strips and use them to replace the 2 strips on each side of existing connectors.
Do you recall what brand the socket is? I was looking at Digikey and there seemed no quick way to figure out which are using the normal pinout and which are diagonal.
@@adriansdigitalbasement I am not sure they are still manufactured! Exxos (he has a forum of the same name) created an adapter for use with the one in the ST for that reason. I had a quick look on eBay but they all seem to be the standard alignment, as you had found. So I think unless someone out there (maybe one of your viewers may have one yet?!??) I guess the only option would be to design an adapter PCB =/
thank you we still appreciate you!!
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!
@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!
On the accelerator: You may be better off getting an adapter PCB stack-up made for a modern clip. Not sure if there's the vertical room in the old mac for that.
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.
I've found that linear regulators can test as "resistors" in those transistor testers.
Yay! Another MMM Mail Call. I may have put an extra M in there for some reason. Always enjoy your videos!
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)
I think you can use surface mount pllc sockets and kind of freely bend the pins. Maybe a 3d printed backplate to secure the pins in position before you press on it.
Thank you for the tenacity to do two a week. I barely had enough to do one.
A tip, take time on the weekend to make a crapton of them, edit them up, upload videos as private and set them to release on a particular day. Try to get a queue going so when things get busy you don't have to worry as much.
@Adrian ,
Not sure if this has been suggested, but what about hacking a standard IC socket in place of the damaged socket connection on the accelerator card? I can envision maybe doing some tracing and rewiring to be compatible with a PLCC socket you place over the stock Classic's CPU. The vital step is to trace and retrace your connections to prevent problems.
The 54 series is the military equivalent of the 74 series. They are usually still manufactured/available with long term sourcing guarantees, cost a small fortune for what they are, and are still frequently used in new military designs.
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
The extra video will be missed, but my life will be going more back to "normal" anyway, so I won't be home watching youtube nearly as much anyway. Thanks for all your hard work!
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
Awesome stuff on the mini mail call! I hope(as all of us do) you get the special Killy Socket you need to get that Mac accelerator card working again. That would be a awesome video on how much more performance you get out of that Mac classic. The Sharpie Red paint pens are also a nice addition indeeed for your IC Chips indeed.
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.
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
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.
Please do what you need to do, man! We are here for one a week or two a week.
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.
You could 3D print an adapter with channels for pins and wires to connect the killy socket to the standard PLCC socket. It would be annoying to draw all the wires through but it would work.
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
A resistor across the AC line is pretty common, they're used to discharge X/Y rated EMI suppression caps. You can get a case of the tingles if you touch the blade after unplugging stuff otherwise!
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.
I bet CPU Galaxy knows what to do with that expansion board!
That channel is gonna be huge soon too.
@@DanPellegrino486 yeah, his collection is insane. Really like his knowledge too. Well studied guy.
So, the Killy Clip was this board's Achilles' Heel? Aptly named adapter.
27:40 - 74 vs 54 - 54 series are milspec, otherwise they're identical
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.
I've found you need to store paint markers vertically with the point down!
Use a "bolt bin" or if you want to get fancy a set of tool drawers with antistatic foam inlays to set the good chips in just label the outside 1,2,3 ect. and use an excell sheet to keep track of what's in each drawer
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.
Cool St John's bridge shirt, Adrian!
You can store and organize ICs by pressing them into sheets of styrofoam and use the pens/markers to write on sheets.
Chips as old as you? We'd have to go back to tubes for me...
Those are called "TV Tweakers" in the Biz
For that PLCC slot, you should desolder the broken clips; find a PLCC socket with longer leads (so they make a wire wrap socket?) and line them up and solder them.
I remember one computer store we'd frequent had a Mac Plus beside a Mac Plus with a Gemini accelerator. It definitely made us drool a bit. :D
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.
Could you de-solder the connectors on the accelerator board and somehow jerry-rig wires to the more standard adapter and then just plug the socket into the board. It won't be a snug fit so the new mother/daughter board likely wouldn't fit back into the original case but at least you could run it.
Hi!
Great content! I surfed around and found a PLCC socket with the pin traces on the bottom exposed, it looks like you should be able to bend the inner pins so they get staggered enough to fit the socket on the expansion card..
I cannot paste the link to the exact search i made, but if you look for sockets made by Augat you might find what i found... Hope it helps..
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:)
Regarding the offset PLCC socket.... The Atari ST has exactly the same problem, it has space to put a 68pin blitter chip but the motherboard is laid out for 'offset' pin type arrangement. On the Exxos atari site, exxos calls this the 'funky PLCC socket', and designed an adapter. I think it might be possible to solder the adapter to a regular socket and then solder some pins on. Then on the accelerator card, removing the broken pin sockets and replace with single strips of (i assume) 0.1inch sockets.
Where can I buy an accelerator for my Macintosh Classic? I'm salivating at the possibilities.