Box of "scrap" vintage computer parts

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On today's video, we have a box filled with random PCBs. Most of them are marked as "scrap" and I have no idea about the history of any of them. Can you help me identify what these cards are and where they came from?
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4 авг 2024

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Комментарии : 261

@tim1724 Год назад

Those first few boards are Intel Multibus cards. The reason they don't look like the picture you saw in the Wikipedia article is because the cards you have are Multibus I (IEEE 796) whereas the card pictured on Wikipedia is a Multibus II (IEEE-1296) card. (The Multibus II spec was released in the late 80s, so long after those boards you have were made.) Multibus was used in a lot of industrial systems . It was also used in a lot of 80s and early 90s UNIX systems from HP, Sun, and SGI. The Sun-1 and Sun-2, for example, were 68000-based systems that used Multibus I in order to take advantage of peripheral cards that had been designed for Intel Multibus systems.

@tim1724 Год назад

aha, later in the video you show an Intel iSBC web page that lists them as "MULTIBUS I Single Board Computers"

@nickwallette6201 Год назад

The Wikipedia article also mentioned that 8089 IO processor being used in the "Intel System 86" -- so I Googled that, and found a "System 86/330A Overview Manual" (this one published in June 1982) which shows a desktop chassis with multiple cards in it, about the right size. The contents lists a CPU board, a 256K memory board, a Winchester controller board, and a floppy disk controller board. Sounds like a match to me!

@TeslaTales59 Год назад

and...wikiped... is known for its inaccuracies...

@UTubeRangerBob Год назад

I have about a dozen of these cards and 2 of the Intel low profile rack mount chassis for them (model SBC 655). I have a couple of 8080A CPU cards (80/20), a couple 8085A CPU cards (80/05), a couple of memory and I/O expansion cards, and a couple of DAC cards (by DATEL). These were used in the USGS DWWSSN seismic stations that were deployed around the world in the '80s. I will be firing these up for our next vintage computer club meet in Albuquerque.

@PsRohrbaugh Год назад

This unlocked a deep memory for me. My parents had a computer with the multibus boards for their business back in the 80s. Haven't seen those dual connectors since I was a kid.

@oldguy9051 Год назад

10:35 The 9.8304 MHz crystal is used for the serial I/O. Divide that frequency nine times by two and you get 19,200 Hz. In the vicinity we find an Intel 8251 USART which supports up to 19.2K Baud for asynchronous transfers. Doesn't sound like a coincidence, does it? ;-) The crystal isn't connected directly to it, though. It needs to be fed by a baud rate generator. Above the 8251 we discover both the MC1488 and 1489 chips so we know that we are dealing with RS-232 hardware here (next to the connector...).

@orinokonx01 Год назад

That card has serial and parallel! It's an Intel iSBC 30 board (or similar) which given enough support hardware can be made to attempt a POST with the built in routines and monitor.

@oldguy9051 Год назад

Nowadays, we understand an SBC as a truly complete system on a single board like a Raspberry Pie for example. But back then an SBC meant that there was a "complete set of components" on a single board with which you could work: CPU, "BIOS" ROM, RAM and at least a serial port to connect a terminal to it. With a bus connector like the Intel Multibus shown here you could obviously expand your SBC into a more fully fledged system. There were many different systems like this around back then.

@bzuidgeest Год назад

Yes and that is literally how the Intel manual for the board puts it.

@kaitlyn__L Год назад

@@bzuidgeest I'm assuming that's why it's in quotes!

@oldguy9051 Год назад

@@kaitlyn__L I don't have the Intel manuals the other poster mentioned. It simply is what it is (or rather "was" at the time). The quotes were meant for emphasis as "complete" is only an opinion and the (EP)ROM chip on a CPU board wasn't always called a BIOS but often a monitor, for example.

@JVHShack Год назад

For the Intel Multibus cards, one person who might be able to get them working would be David of the "Usagi Electric" RU-vid channel. He was at the most recent VCF East with his Centurion system.

@KenjiUmino Год назад

Yeah ... "just show 'em to usagi, I bet he'll know a thing or three about them" was my first thought when adrian showed those cards in the video

@FrankenLab Год назад

He was also on stage with Adrian at VCF East...

@orinokonx01 Год назад

As an owner of an Intel Multibus system that barely functions due to faulty parts, I am extremely envious of your newfound collection of Multibus cards..!! :D Edit: Adrian, if you do not want to keep those Multibus cards, I will happily pay for them and shipping costs to Australia!

@VorpalGun Год назад

If you get them, you got to make videos to show them off!

@Badgii Год назад

GPIB (IEE488) is a bus for controlling the lab devices like multimeters, power sources, etc.

@joelavcoco Год назад

And aren't the Commodore PET disk drives on a GPIB? I believe that the Osborne 1 also has GPIB for, what, a printer? Maybe I'm wrong about that.

@goranekstrom708 Год назад

That is what it became, in its early days it was an actual computer bus like SCSI but it was quickly outdated, being an 8 bit bus. The origin was HPIB but that was patented so the industry circumvented that by creating the GPIB "copy".

@kaitlyn__L Год назад

@@goranekstrom708 almost: HP were fully cooperative with it becoming an industry standard, you just can't use company names in standard names. Same reason SASI became SCSI, even though Shugart again were part of the effort.

@draggonhedd Год назад

Those sonnet crescendo cards are great, hope that makes it to someone who can use it. That NewerTech card is a mac upgrade too. Pretty universal one for mid 90s machines that use that type of CPU card.

@stamasd8500 Год назад

Yeah. That one looks like it's for a PowerMac 6500 or similar, I think.

@parrottm76262 Год назад

I love board archeology from that era. So many different products from tons of vendors, trying to create the next big thing.

@KAPTKipper Год назад

The Intel board is a Multibus board for industrial computer- iSBC-056 256k RAM board. A GPIB Board would be IEEE-488 related, like that used on the PET

@jrnovosel Год назад

It's Intel Multubus. The gold paint was probably to indicate a "golden" board to be used in testing.

@DShadowWolf Год назад

Yep. BitSavers has the spec document for IEEE-796 -- the dual-connector bit is shown in chapter 4, page 3

@bobroberts2371 Год назад

I'm thinking it is from a vintage 007 film. . . .

@monad_tcp Год назад

literally golden, what I though, it was tested and someone painted it golden to know its golden, makes sense

@poliveri0722 Год назад

Re: Top Down Camera ... I can see a hot spot reflecting off the circuit board. It might not look obvious but it's like taking a flash picture at a mirror. The camera is trying to compensate for a light source in the picture. Try putting a mirror on your table and see if the camera can see a light source.

@JamieStuff Год назад

As others have said, those are Multibus I cards. This was likely some form of industrial computer; the cards would plug into a card frame/chassis, similar to the old S-100 systems. These were referred to as SBCs, as compared to older designs that had a CPU board, a memory board, and such. The original IBM-PC motherboard would have been considered an SBC at the time it was released.

@Dukefazon Год назад

30:35 - Those PCI prototyping extender cards look SUPER COOL!

@cambridgemart2075 Год назад

25:20, the blue connector is a Hypertac connector, very expensive and qualified for avionics and military systems.

@handlandj Год назад

I KNEW IT! The gold paint looks like the systems I saw applying to a modernization job for the FAA.

@unavailablenumbers Год назад

So that AZ-COM card there is something rather special indeed; that's a PCI bus analysis and hot-plug validation board. The risers segment can be configured to mimic cPCI passive extenders for cPCI analysis as well. The missing SW2 would be the bus swap in/out as I recall; that toggle at the rear is probably for switching between 5V and 3.3V. I actually did a very similar modification. The Twin Industries 5EXTM is a 32-bit board specifically for backprobe and testing on 4-layer PCBs; they still make several versions of it to this day.

@escgoogle3865 Год назад

Yes! I place I worked for in the mid late 90's made a short run inhouse version of this type of adapter for testing pci network cards. Hotswap (with a toggle) PCI goodness.

@unavailablenumbers Год назад

@@escgoogle3865 same - mid-late 90's, but we had a bunch of these exact cards for prototyping and validation work. Simply because they were orders of magnitude cheaper than Innotec or MuTech!

@cracyc00 Год назад

That's the original version of the isbc-215 that requires a external adapter for st-406 drives rather than the generic 215g variant that supports them directly. The documentation for it is at bitsavers.

@microknigh7 Год назад

Are the initial few boards from an Intel MDS System. We used to use those back in the late 70's and through to the 90s for 8085 and 8086 development. Can't say I remember exactly what the boards and Backplane looked like. But many of the boards had a backplane and ribbon cables off the front edge similar to those you showed

@redrobin41 Год назад

26:13 - This is a Sonnet Crescendo G3, which is an upgrade processor for PowerPC 601-based Power Macs. It mentions 3 models on the card specifically: PowerMac 7100, PowerMac 8100, PowerMac 6100AV. It is known compatible with the 7100 and 8100, it is incompatible with the 6100AV and incompatible with DOS-compatible machines, however; it will work in any other 601-based PowerMac with a Processor Direct Slot, or "PDS." It has a maximum frequency of 400MHz, 64k of level 1 cache, 1mb of level 2 cache, and supports MacOS 8.5-9.0. Retail was $700. 27:18 - This is a Newer Technology MAXpowr G3 250, which is an upgrade processor for PowerPC 604(e)-based Power Macs. It is compatible with the PowerMac 7300-7600, 8500-9600, as well as some PowerComputing and Umax Macintosh clones. It replaces any stock daughtercard, and plugs into said daughtercard slot. It has a maximum frequency of 250MHz (hence the 250 name), 64k of level 1 cache, 512k of level 2 cache, and supports MacOS 8.0-9.0. Retail was $550. These are really cool and a good find!

@thomasburk3205 Год назад

I have the same 250MHz Newer Technology MAXPowr G3 card in my “Kansas” 9600, very nice card. I also have XLR8 MACh Carrier G3 card somewhere that I haven’t tried yet. I believe it is a 400MHz G3.

@phil5564 Год назад

Interesting boards, especially the Mac SE for me. I was a test engineer on two chips on that board.

@stamasd8500 Год назад

The purple Sonnet thing is a G3 upgrade for the powerMac 6100/7100/8100. Those came with PPC601 chips, up to 110MHz IIRC. I had a 8100 back in the day, and would have given an arm and a leg to have an upgrade like that. Those NuBus powerMacs were weird to upgrade; the upgrade plugged into the video card slot, and then you'd plug back the video card into the upgrade card. That's why it has 2 slots. Unfortunately I don't have that 8100 anymore.

@VorpalGun Год назад

Wrt the GPIB interface: GPIB is a bus originally made by HP. It was/is often used on test equipment like bench multimeters, oscilloscopes etc. The devices can be daisy chained.

@michaelstoliker971 Год назад

That board was used in Intel iRMX boxes. I remember these from a company that used them as system controllers for data acquisition systems. Definitely Multibus systems. I just called them Intel White Boxes, as opposed to Blue Box development systems for micro controller based systems.

@orinokonx01 Год назад

I own an Intel System 86/310 which has had a very interesting life modified as an iAPX 432 clone system from a company called High Integrity Systems. Sitting right next to me..!

@absalomdraconis Год назад

@@orinokonx01 : iAPX 432 is many things, but indeed, "uninteresting" will never be one.

@orinokonx01 Год назад

@@absalomdraconis I have been (very slowly) piecing together a RU-vid video about this system, if only so that others can learn something about it and where it came from. I've even 3D modelled about 80% of the internals. Even have a faithful recreation model of the System 432/600. One day I'll get back into that project. That's why the machine is sitting next to me!

@huhwhat2308 Год назад

This is what I was going to say.

@GGigabiteM Год назад

The Sonnet Crescendo 250/512k is a 250 MHz G3 processor upgrade that plugs into the cache slot on several different Macintosh models, and some clones. It'll work in the Power Macintosh 6100, 7100, 81xx, several Performa models in 61xx series, 6360, 6400 and 6500 (as well as their Power Macintosh counterparts), WGS 6150, 8150 and 9150, as well as Power Computing 100, 120 and some others. The Newer Technology Maxpowr Pro 250/125 is a 250 MHz G3 upgrade for the Power Macintosh 7300-7600 and the 8500-9600. Both of those upgrade boards are highly sought after and are worth hundreds of dollars a piece, if they still work. But even if they don't work, they'd still go for quite a bit to someone who can fix them.

@SidneyCritic Год назад

My brother worked for NCR around that computer era, and he had a van fully of dead boards. All their customers needed to keep running, so it was pull the dead board and relace with new. There was also a price list for a twin 8" Winchester HDD at $8K - lol -.

@mikespangler98 Год назад

The Sonnet card is for the first generation PPC Mac, the 6100 was a pizza box format machine with a Processor Direct Slot that could take an adapter to get a Nubus slot. The Newer card is for a PCI Powermac. It might be a G3 processor or maybe a 604. I'm surprised it didn't specify which.

@thomasburk3205 Год назад

It’s a 250MHz G3, I have the exact card in my 9600

@fernandlehners7787 Год назад

what an interesting episode about so much unknown hardware. Would be a challenge to get these single board computers running.. Keep on with these excellent videos

@KayakTN Год назад

Got to love people who helpfully write stuff in permanent marker.

@luke27luis Год назад

Very interesting stuff. I'd love to see some troubleshooting on that board with the short to GND!

@Xaltar_ Год назад

As others have said, Multibus I cards (the ones with the same edge connectors). I would guess they were all in house prototyping boards by the "scrap intel" stamped on the backs and the crazy amount of bodge wires. Very cool find, I would make a cool wall display out of them.

@tschak909 Год назад

First board is a 256k RAM board for MultiBus systems.

@witness1013 Год назад

If only that Intel 056A written on the board was of any help.... "The iSBC 016A/032A/064A/028A/056A Random Access Memory (RAM) Boards provide a dynamic memory storage capacity of 16k, 32k, 64k, 128k, and '256k bytes, respectively, for use with all Intel iSBC HO/86 Series Single Board Computers and Intel SO/86 Series Microcomputer Systems. These RAM boards interface directly with the bus master via the Multibus interface and differ only in memory capacity and memory array configuration. This manual provides a general introduction, prepara- tions for use, principles of operation, and service requirements for each of the configurations of the RAM board. The iSBC 016A/032A/064A/028A/056A RAM boards are designed to allow quick, easy, and inexpensive expansion of RAM storage facilities within an Intel Multibus-compatible System. On-board refresh circuitry initiates periodic RAM refresh cycles to maintain the integrity of the RAM data. An optional auxiliary bus connector may provide battery back- up power for the RAM and the refresh circuits. The RAM boards are direct replacement products for the iSBC 016/032/064 RAM Boards. Figure 1-1 shows a typical example of the iSBC 016A/032A/064A/028A/ 056A RAM Boards. "

@shadowtheimpure Год назад

That magic purple heatsink screams "Sonnet"

@mikestanley9176 Год назад

Love your t shirt. I had two relatives that worked for Tektronix.

@DerSchoermbro Год назад

The Intel stuff looks like customer returns to me. The failure description, the test card, an orange arrow pointing to one of the pins of an IC maybe indicating something of interest for a failure analysis. Looks super interesting!

@coctailrob Год назад

Winchester disk drive. That takes me back. Back in high school in the late 80s our computer room was BBC micros with a Winchester hard drive running on a BBC master as a server. It was quite a big noisy box.

@stevenwilson1690 Год назад

As others have said - it is a Multibus card. The Multibus was Intel's competitor to the Motorola Exorbus (which later became VME). It was first invented and used in their Blue Box development systems. The boards that have sockets on the bottom are likely emulator boards. The Intel Blue boxes provided emulators for the different Intel CPUs. The sockets on the bottom would be how the emulator was plugged into the board-under-development. This would let you load code and interactively debug your board and software together. The blue box would supply you with keyboard/monitor and disk storage for supporting your debug. I believe these were called "Isis" boxes - maybe for In-System-Support 0r something like that.

@memadmax69 Год назад

I sure hope you are able to put together that multibus computer, would make a nice video series. Looks like all you are really missing is the cage, backplane, and a psu.

@highpath4776 Год назад

Looks like a task for usagi

@martinwhitaker5096 Год назад

...and a bunch of ROMs...

@memadmax69 Год назад

@@martinwhitaker5096 Easy. All you need is something simple running 8086 only code.

@comwarrior69 Год назад

The SBC multibus was used in industrial process control systems, the first company i worked for back in the mid-late 90's made industrial control systems with 8086 and the 80486/overdrive cpu cards. The CPU cards are stand alone, they have everything on them (local ram, IO etc) however they have a bus so that you can plug multiple CPU cards, shared memory cards, IO cards etc etc and access them. The reason the roms are 'missing' is because these contained the operating system that was made by the company for the client. The 'bodging' might not be repair bodging as the cards would need to be configured which sometimes you wire wrapped from configuration pins and sometimes they were soldered.

@robertharris2262 Год назад

Yep, they were in the CNC machines I worked on in the mid 80s. The processor used was a Zilog Z8000. Machines were Excellon drills and routers

@brentboswell1294 Год назад

Blue boards at Intel means Beta prototype pass. Red is used for Alpha pass, and green is either a production spec prototype or a production part. Something escaped the lab there-Intel has a very strict internal system to keep track of and destroy prototypes.

@MrJohndoakes Год назад

33:30 The extender boards were a thing you saw for amateur (ham) radio repair, starting with the Yaesu FT-101 series in the 1970s; Yaesu designed their transceiver to have plug-in boards so you could test them either on the bench or plug the extenders to work on it with the rig plugged in, or just stick a new board in. This stuff is still being done by FT-101 users to this day. (The FT-101 is a Japanese shortwave ham radio which is mostly transistorized, except for the transmit output, which is amplified by tubes. It's a very analog machine.)

@alabamacajun7791 Год назад

At 10 definitely a CPU card. PIO, Interrupt controller and cache on board. Did not see a DMA controller but a number of ROM slots and yes looks like the 8087 socket. Neat Shtuff.

@michaelstoliker971 Год назад

Ha! I just used my JDR Microdevices screwdriver yesterday. Free gift when you ordered XT motherboard clones from them.

@cmfrancis1 Год назад

Pretty good source of TTL logic and high quality sockets tou have there.

@handlandj Год назад

Crazy Ken would be ecstatic for those mac parts.

@rabidbigdog Год назад

(Doug Demuro Voice) *THIS* Adrian Black impersonator is superb.

@senilyDeluxe Год назад

You can pretty easily pinpoint the short on the card that has the +5V shorted to GND marking using a milliohmmeter. I have a bench multimeter that can reach there. Handy for finding shorts.

@horusfalcon Год назад

That ink used to stamp SCRAP on those boards may be conductive! A lot of stamp pad inks back in the day had carbon black as a major component. Be sure you clean that up before firing up. The 8255 is a programmable peripheral interface. It provides three 8-bit parallel I/O ports that can be configured in a variety of ways by sending appropriate code to the chip at startup. (A very long time ago, I built an I/O board that used an 8255 to interface to real-world loads that were controlled by a SInclair ZX-81 that controlled the I/O by use of POKE and PEEK commands from Sinclair BASIC. The board was described in Mike Lord's "The Explorer's Guide to the ZX-81 and Timex-Sinclair 1000". I still have a copy of the book, having recently re-bought it used.)

@Psychlist1972 Год назад

The board at 15:10 is probably for a terminal. GPIB is used in, among other things, oscilloscopes and test equipment. Maybe most of this first pile was from some sort of manual + automated testing workstation.

@CDP1861 Год назад

8255? I know that one well. It's not a UART. It's a two or three parallel ports, depending on how you configure them as input only, output only, bidirectional or bit mode.

@gordonlawrence1448 Год назад

The 8202 is a DRAM controller from back in the day before DRAM did it's own refresh. Not a chip I have used (I used to use the 74S407 I think).

@williamsquires3070 Год назад

The board with the ZIF sockets was probably an EPROM programmer, and could program OTP 80xx-series microcontrollers like the 8049/51 based on the fact that those are 40 pin ZIF sockets; if it did only EPROMs, it’d only need a 28 pin socket. Just my $0.02, though.

@paulvetter6050 Год назад

Those first boards look like the type of vertical RAM/processor used in old PBX's.

@kaliban4758 Год назад

i was going to say those intel boards are from a mini-computer

@avrahamhollander9296 Год назад

The purple heatsinks are from Sonnet. You could send those Macintosh partd to Sean from Action Retro if you have nothing to do with them.

@FrankenLab Год назад

My thought on the board with SCRAP on it is that when I worked for DEC, sometimes things would get marked as SCRAP as a way for them to be taken off the books so that someone could take it home with them. There'd be nothing wrong with it, or maybe some minor thing to justify marking it as scrap.

@jondhuse1549 Год назад

Right - it was generally marked SCRAP so it couldn't be resold, not because it was non-functional.

@stevenbliss989 Год назад

I love your channel because I miss the days when mere mortal engineers could fully understand all the logic and software. Now it is INSANELY complicated! :(

@kilianhekhuis Год назад

5:45, screaming at the screen "SCROLL ON!!! THERE'S ANOTHER PICTURE THAT LOOKS _EXACTLY_ LIKE THE ONES YOU ARE CURRENTLY LOOKING AT!!!!!"

@MagnaRyuuDesigns Год назад

Those fist cards you showed are very similar in form to what I know as load boards, which Vector Electronics Company actually sells. (Yes Vector Electronics Company is still around) The similarity being the edge connections and the little triangular parts on the corners that flip out

@Fifury161 Год назад

21:55 - I had a box of those square shaped boards - they all got chucked when I moved house though so I never got exploring them - they did appear to have a lot of gold on them though....

@rpiflip Год назад

I don't have any INTEL multi bus boards but I do have several MC68000 and MC68020 boards and (i believe) a 5 slot backplane. I converted an old test stand from the multi bus system to a PC At/386 with a custom interface board. It took about 6-8 months to design/build and rewrite the test software. About a year after that my company was bought and the multi bus systems were tossed. I have them in a storage unit waiting to be revived. Maybe one day.

@melkiorwiseman5234 Год назад

The tiny board with 488 on it would be a GPIB (General Purpose Interface Bus or IEEE-488) interface. It's a relatively simple interface to implement, having exactly 16 data/control lines. It has an 8-bit bi-directional data bus and 8 control lines. The control lines are used to change the data bus between data mode and command mode, and also for flow control along the data bus. I'd presume that one of the two large chips is used as an output latch and one is used for input, while the two slightly smaller chips contain the control programming. There looks to be a resistor array in there, so I expect the output was open-collector with the resistors providing pull-ups to make the data lines "float" high when not being controlled. Functionally, they could probably have gotten away with just using a single 16-bit interface chip, but logically it was probably easier to implement the GPIB protocol by having separate chips for input and output. The reason I'm so knowledgeable about GPIB is because I had to "home brew" a GPIB interface to allow a kit-built computer to "talk" to an old Commodore 2031 disk drive which used the GPIB for its interface. I used two 8-bit output latches and two 8-bit gates for input, with a few "glue" logic chips around the interface chips to decode the I/O address and handle Chip Enable. The (presumably) RAM chips probably have their response time in nanoseconds printed on them as the last three digits, so 002 means a 2 nanosecond response time, which is pretty fast considering when they were made.

@wirebrushofenlightenment1545 Год назад

Been a while since I've seen RAM chips in ceramic packages!

@tvtoms 8 месяцев назад

The tag on the small board with words like "Epoxy" and "Touch up" probably refers to the epoxy insulating coating over the traces. The silk screening process could be slightly misaligned and the operator or auditor didn't catch it. So inspectors would hold the boards at a steep near 90 degree angle looking for traces shining too brightly ie: uncoated. Then touch them up with paintbrushes and epoxy. They would also look for coating where it didn't belong and use a spinning nylon tool to sort of "dremel" it off. The material would remove the coating but not the trace. For a time I worked on raw circuit board layers for an IBM commercial subcontractor, and at another plant on completed boards. I worked as an inspector, a silk screener, and an auditor. That was in the early to mid 80's.

@DarrenHughes-Hybrid Год назад

I usually use Google Search by Photo to identify boards. And with those first few Intel boards look like: Intel iAPX 432. For sure the 2nd board.

@orinokonx01 Год назад

No Intel iAPX 432 here, but close! Intel used some of these cards in their iAPX 432 computers (See Intel System 432/600 series).

@dougmcclelland6139 Год назад

yes the great iAPX 432 of which most people do not know of it's rich history or how Intel put a 32 bit IBM mainframe on a single board computer

@chefboyardee14 Год назад

I can confirm that the IWM chip from a Mac SE will work in a //c. I have a //c that I've had since my dad bought it from a classified ad in the 90s, and it never read disks. A year ago i bought an IWM (plus ROMs) someone pulled from an SE, and my //c is back in action!

@jrrscttktts Год назад

Hey, look at that. My home town of Sylmar (North East corner of the San Fernando Valley) got mentioned without any references to wild fires or earthquakes!

@unmanaged Год назад

The PCI Electronic Extender (PCIEE) is a device designed to enhance the process of testing and developing PCI Bus products. With the PCIEE , you can disconnect the power and bus signals from the top connector and safely insert or remove tested cards with the PC power turned on. This not only saves time, but also protects the components of the PC from damage that results from constant Power On - Power Off cycling.

@fumthings Год назад

pwa should mean printed wiring assembly, its another term for pcb

@andrasszabo7386 Год назад

If you read the EPROMs from the 2nd Intel board, that might give you an answer to what these are.

@charlespaschal25 Год назад

GPIB is a communications port that was used with a lot of HP equipment.

@jjock3239 2 месяца назад

I have a G3 card in my 7600/120 Mac Power PC, that looks similar to that board. However, the upgrade card I have, is made by Sonnet, who made a lot of upgrade stuff for the Power PCs. I bought the the 7600 as a used computer, and even after doing several upgrades on the machine, I just wasn't happy with the performance. So, now it sits in my basement, unloved. They also sold a G4 upgrade, but it was expensive, and I was so underwhelmed by the performance, that I never bothered with any further upgrades. For awhile, I was thinking about putting Linux on it.

@KennethScharf Год назад

Card #1 is an Intel Multibus card. Multibus was an Intel standard (like S100) that was used in their development systems. Scrap, card was probably salvaged from Intel by an employee. I used to buy scrap boards from DEC when I worked there. (cost me 10 cents on the dollar of what DEC paid for them). The 8089 could be used as a programmable DMA controller, card might have been a disk interface for Multibus? Looks like all those cards could have come out of an Intellec development system That floppy disk controller card could have been part of a two board unit, the two boards connected at the top by a jumper card or cable. That 8086 board IS the main cpu board from an Intellec system. The 8259 is the interrupt controller, 8253 is a timer, the 8251 is a serial uart chip, 8255 parallel IO (printer interface maybe). Scrapped boards might not have been defective, just too far out of revision to keep in stock or bodge up to the current circuit schematic. That defective board with the leds looks like it might have been part of a chip programmer.

@Gunstarrhero1 Год назад

you should contact usagi electric and see if he wants any and all multibus cards, or q bus cards.....

@AntoineWG 28 дней назад

The PCI riser cards look like they take turn a later 3.3V-only slot into an older 5V-only slot.

@Dan-TechAndMusic Год назад

The Asante card could potentially be used with the breakout board of a different PDS network card. I personally have a Novell card on my SE, that I use with the breakout board of a DaynaPORT SE/30 card. Pinout seems to be the same, it might be the same case for other boards. In any case, the pins should be AUI signals, so you could also rig up a DB15 port on the back for a transceiver, or internally wire up a transceiver.

@KatriceMetaluna Год назад

Those little blue connectors on those Multibus cards look like iSBX. Fun fact: ASDG made an iSBX adapter on a Z-2 card they called the Twin-X. They made drivers for RS-232 and GPIB modules but anything fancier than that you'd have to get made yourself. Also DMA wasn't supported.

@oldguy9051 Год назад

19:30 You can barely make out the white printing under the sockets: one would be for a 8086 or 8088 and the other for a 8087

@TheAussieRepairGuy Год назад

I dismantled many cards like that in my younger years, they were from a telephone exchange.

@vanhetgoor Год назад

That Intel 34 board is possible a disk interface converter, from a card edge connector to pin-header.

@tekvax01 Год назад

GPIB interface is an IEEE488 HP test equipment physical standard protocol communication board. The IEEE488 standard was ALSO used in CBM Pet 2001 and others as a printer and disk drive controller interface.

@robertharris2262 Год назад

Then stripped down as the Commodore serial bus

@DarrenHughes-Hybrid Год назад

Differences to the 2nd Az-Com board extender. It does not have the Pin Connector added to the extender.

@azmi3333 Год назад

If you look at the CPU board those connectors are probably the console and maybe printer interfaces. The UARTs and 1488/1489s were really common for RS232 level shifting back then. Edit: I watched the CPU section again and it actually looks like there may have been more 1488/89 pairs in those open sockets. I used to work on an Intel system reminiscent of this. The US Army had a bunch of them out at Ft. Hauchucha in Arizona. They ran a multiuser MS DOS. This was nearly 40 years ago and I was 16 at the time so my memory is failing.

@AwesomeGames56 Год назад

Look at Linus Tech Tips’ tour of the intel labs! These could be dev boards they would have used for initial testing. Way overboard for consumer use but would help them with debugging and development of new hardware.

@martinwhitaker5096 Год назад

If the state of these boards is anything like the state of our dev boards we chucked out at Philips after using them then good luck getting them to do anything! Our boards often ended up broken in ways that we (as the designers of the board) couldn't work out. They may even have early silicon revisions on too - whilst this sounds interesting, in reality it translates to 'doesn't work as expected'...

@martinwhitaker5096 Год назад

(to be clear I'm talking about prototype boards for Philips products - set top boxes, TVs, DVD drives etc...). Alternatively you may get lucky - perhaps these belonged to the software department so will be fairly unscathed!

@poofygoof Год назад

The ISA network card says "supports full duplex" but the original NE2000 didn't support that, although this one looks like it was backwards compatible based on a cursory doc search. I wonder if it could really saturate a full-duplex 10mbit?

@Peter_S_ Год назад

I'm completely amazed those 64kx1 DRAMS are not in sockets. Those are Multibus cards. Industrial and scientific automation from 40+ years ago. More: at 12 minutes, that floppy controller is built out of Intel 2 bit, Bit Slice logic. AMD did 4 bit wide bit slices in 1975, but Intel did 2 bit slices in 1974. The Intel D3002 and family are similar in concept to the AMD2901. The 40 pin chip on that card is an Intel D3001 Microprogram Control Unit which I think may be similar to the AM2909/AM2911. 18 minute range: GPIB = General Purpose Interface Bus interface. IEEE-488 is the standard number.

@christopherdecorte1599 Год назад

Those sonnet cards can be valuable

@sfperalta Год назад

I might be wrong (it's been a very long time), but those Intel-branded cards with the dual edge connectors look similar to the Intel MDS-80 or MDS-800 development systems. Intel sold these for firmware development with in-circuit emulators for 808x family processors and PROM burners for embedded development. I briefly used one back in the late late 1970s.

@slightlyevolved Год назад

IIRC, the Sonnet Crescendo were G3 cache slot upgrades,mostly for the likes of the PowerMac 6500.

@electronicarchaeology Год назад

Could ask Usagi Electric, he will probably know what system boards are from, they look similar to what he has shown is on his channel.

@megan_alnico Год назад

Action Retro would know all about the Mac upgrade cards.

@orinokonx01 Год назад

I own a System 86/310 that was modified by another company called High Integrity Systems. They swapped out the Intel iSBC card with their own 3 board solution which appears to actually be a clone of Intels own iAPX 432 system cards! I've been gathering as much detail as I can and even made 3D models of some of the components and cards and such. The cards Adrian has were an option for the Intel System 86/300 series, so what he has is quite a rarity indeed. All he would need is a small 4 slot Multibus I backplane and a few ROMs and things and he could at least attempt a power on with the iSBC and connect a terminal. The Winchester controllers both require external cards for data conversion etc. For example the iSBC 215 and 218 were used for hard drive and floppy drive. The 218 actually plugs into the 215 as a daughterboard and connects directly from the 50 pin IDC to a typical 34 pin Shugart floppy drive. For a hard drive to be connected to a 215, it seemingly only supports MFM drives (I built a MFM hard drive emulator Adrian showed in one of his previous videos) and the data connector goes through an Intel Data Separator board. I would suggest these cards were removed from the RA pile at Intel. The markings 'SCRAP' and paint and tags point me in that direction.

@JCCyC Год назад

Now all you have to do is bring these to RMC and you'll be... IN A CAVE! WITH A BOX OF SCRAPS!

@christopherleubner6633 Год назад

8x4 1k array for first card, 32kb total. Was mighty spendy when new back then, scrap today. Surprisingly the gold scrappers didnt pull the chips. The second one is the system bios boot card. Floppy card was for a big 8 incher, the potentiometer controls the motor speed of it.

@PsRohrbaugh Год назад

Those were the days

@danniemortensen4217 Год назад

Looks like some i Saw on usagi Electric Centurion Series Here on youtube. An old busstandard as Well. Would be cool to see at least one card up and running, controlling something again After 42 years.

@ravenbarsrepairs5594 Год назад

Seem like cards Usagi Electronics would have

@MLampner Год назад

I don't specifically recognize the two Power PC processor boards but I had a mac from this family and while I loved the machine speed on the CPU on the motherboard was quickly dated as the CPU was soldered on boards like this essentially came a long seized the bus and allowed you to upgrade the machine. If I remember correctly it also used the original CPU as some form of co-processor though my memory is hazy about all of this.

@stevencarlson5422 Год назад

would love to get ahold of the mac boards to upgrade the macs i have :) its lucky if you just got them in a bunch of scrap stuff

@profpep Год назад

First card is most likely 'Multibus 1', used in some Intel development systems. The card in the picture was Multibus 2. MC1488/1489 are RS232 buffers, so it may be that small edge connector was for a serial port. My guess is that the boards are from and early Intel Intellec MDS development system. I am with your guess as to the first non multibus board being a terminal.

@Gunstarrhero1 Год назад

sonnet is the name of the company; you should contact action retro about that and any other mac related stuff