PC Archeology: A left for Dead IBM PC 5150 with a treasure hiding inside 🕷
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- Опубліковано 1 жов 2024
- It's time for another episode of PC Archeology! This time we have a IBM PC 5150 that was picked out of the recycle bin, about to be shredded. I thought this was just going to be another run of the mill PC, but you never know what you might find inside.
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--- Instructional videos
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--- Music
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I forgot to mention in the video that there was really nothing interesting on either of the floppies I archived. Also, if you are curious, that EPROM I used in place of the ROM was a WSI 57C49C -- it's a drop in replacement but the issue with it is you can only program it on "fancy" programmers the Data IO 2900... so it's not really useful to most people since those types of programmers are impossible to find.
I've seen you reverse engineer weird memory expansion boards before, hopefully you take this Inboard on as a reverse engineering project as a reproduction is likely the only way I will ever come across an original, ever.
So, was the spider's name "Boris"? 😂
The spider is like, Happy Halloween, Adrian. But that 386 accelerator card in a 5150 is just insane.
Indeed. Wouldn't be surprised if this was used in the early 90's before upgrading to a 486. If this computer could talk or have a working hard drive...
@Toonrick12 I had the exact same setup in 1989, 5150 was from junk pile at work and 386 card was $20 from some guy name Fish from the Recycler. Machine was finicky but did run 386 speeds and apps and it overheated nicely...
LIke a Beetle with a Posche motor in it :)
@@katho8472well, Beetles always have Porsche motors since Ferdinand Porsche designed the original Beetle....
@@wernerviehhauser94🤓
The spider jump scare alone deserves a thumbs up ! Another great video from the basement.
I went back and played it frame by frame to see if the spider was walking of its own accord or getting pulled by the drive 😅
That 386 accelerator card is super cool!
Growing up, my parents had an IBM 5150 they picked up used. It had 640K of ram, CGA graphics, 1 Full Height 360K floppy drive, and a MFM 20MB Seagate Half Height Hard drive. It originally had MS DOS 3.3, a few games, and MS Works for DOS. My father and I upgraded it to a 386 33MHz and more RAM. During the upgrade, we discovered that the AT spec moved the keyboard port to right between the Keyboard and Cassette ports and increased the number of expansion slots in the same space as the XTs! So, we were limited to external I/O on the outer two slots and internal I/O card in the next two slots in, but couldn't use the rest of the slots near the center as the mounting brackets would not line up! We trimmed the case to allow access to the keyboard port and ran it that way for a number of years. It ran MS DOS and Windows 3.0. I played SimCity, SimFarm, SimAnt, and Railroad Tycoon on it as well as learning how to program in Turbo Pascal on it! Good times!
I restored my one of these keyboards. The foam degrades inside and causes all sorts of problems, both with stuck keys and non-registering keys. I had to take it apart, clean everything and replaced the foam with a sheet of neoprene. It now works flawlessly. You will need a series of clamps top and bottom and a long one at the sides to help you get the layers clipped back together. Lastly, don’t pull off the space bar. It is clipped to a metal bar underneath and you will both break the plastic clips and be unable to reattach it without disassembling the keyboard again. When you do reassemble it, feed some dental floss through the post hole around the metal bar to pull and hold it up while you click the space bar back in. Once you are sure the space bar is clicked in and seated right, you can then pull it out.
That accelerator card is really amazing, and it is so good to see that the machine holding it wasn't confined to a grave. I can only imagine how much of a lease of life it must've given it back in the day!
Seriously, this machine brings me memories of my early days with computers.
When i started learning BASIC in the early 90´s, we were using 8088 and 286 PC that were ¨pumped¨ up with max RAM with very few or no wait states. They were all in the same room, as they were the ¨rookie¨ machines. They all had double 5.25 1.2 MB disk drives and no hard disk (on purpose). In that room, you could find a very odd selection of desktop cases, from old 5150, to unnamed clone XT, to even foreign weird ones. My favorite was an upgraded Televideo that was upgraded from 8088 to a NEC V20 and was working with... 640K of RAM!
Funy enough, Epictroncis released a video today, restoring Model F XT and Model F AT Keyboards. He also had some badly desintegrated foam pads and showed some replacements you can actually buy new. Regarding the POST error, I assume that the water in the keyboard caused some corrosion that is causing some kind of short, and be it a stuck key or something like this.
The accellerator is great, I'd love to get my hands on one at some time to test around with it.
Epictronics even has a Model F repair video from a couple years ago - very helpful when I was doing work on my Model F
I'm assuming it was just cheaper to install the 386 card once the computer started to become too slow to run major programs than just buy an entire 386 PC although Im sure that in and of itself was not a cheap proposition, however its really nice to see an original 5150 up and running, especially with a faster brain and heartbeat. Great stuff as always Adrian!
If memory serves right it was quite the opposite which is why these were never popular. I mean this thing would cost as much as a 386 motherboard, with the penalties of the slow bus. But its amazing something like that even existed, because its of course an "easy" upgrade if you just wanted your spreadsheets to run faster or such.
Fantastic find. Glad you could save the IBM. I just made a video restoring Model F keyboards. There is a guy in Canada on eBay who sells new foam pads for your keyboard
was going to recommend your model F video, nice to see you here! thanks for the great content
@michaelscarport Thanks. Good luck with the restoration
@@FLECOM Thank you!
@michaelscarport woot! That is insane! Why YT? I have completely stopped using links in comments because they just get deleted. Those cork feet seem pretty good quality. This is my first KB that had missing feet
Quick Thought: Maybe write "No Terminator" on the two floppy drives in case you go to use them at some point and get mystified why they aren't working? That does seem like an easy thing to forget to check, especially with the checkmarks on them now! :B
Tip for the bad sector disk: I had very good results with completely unreadable C64 disks (like 80+ % of the sectors were unreadable when archiving them on PC with a 1541 connected to the parallel port). Cut open the disk envelope, place the disk on a paper towel, and clean it with an other paper towel moistened with Windex. Cut open a good condition sacrificial disk and insert the cleaned disk into its envelope. Completely unreadable C64 disks came up 100% readable with this method. That collection of disks was stored on an attic for 15-20 years, and they didn't like it.
you've solved a mystery for me. i used to work in a manufacturing shop that made a lot of face plates for telecommunications equipment, which were powdercoat painted. if there was even the tiniest speck of paint missing, they would have it buffed and repainted. i've always thought was silly and wasteful, considering the parts being made are going to sit in a closet and never be seen by anyone who would care about a tiny fleck of paint missing. maybe it's because they want to make sure the powdercoat prevents oxidation.
That’s common with pretty much all painted iron/steel surfaces - a little missing spot, or a bubble under the paint, would definitely corrode within 5-10 years of service. It definitely seems wasteful of paint, but of course that’s much cheaper than sheet steel so it works out.
I worked on 5150s and 5154s. I also helped with the first ps/1s when they were having problems with corona arcing. I designed and built the 1st circuit jig to test audio.
Looks like an Inboard 386, I have one but mine doesn't have the RAM extension daughter board on it. I would love to get enough RAM to run Windows 95 on the thing but without an open source
eproduction alternative to the extremely rare memory expansion, all hope is lost!
Windows 95 had a minimum requirement of 4MB if I remember correctly. I once installed Win95 on a 386sx/16MHz with 8MB RAM and it was unusably slow.
I ran Windows 95 on a Pentium 100 with 8MB... Maybe 4MB of ram back in the day... Fast enough to play CDs lol
@hardlyworgen71 I'm sure it was. Good thing as a vintage tech person, agonizing slowness is part of the fun! If I want fast, I would just use my newer computers. I mostly just want to point at it and say, "Look at this lettle feller go!"
Be kind to the spider, she probably spun that expansion card for you during the time that she was guarding that 5150 for you.
The power supply on the 5150 was pitifully underpowered. I looked it up and one site says it was 63 watts. I had to upgrade when I added a hard drive. $400 for a 20MB Seagate. Still have the 5150, original green monitor, original ps in a box somewhere, the Seagate and (I think) its interface card and cable. We hoarders preserve history.
interested to kn ow what PSU you chose to upgrade to? Am waiting on a 5150 from eBay and am nervous about using the original PSU.
Looks like the keyboard connector can be unplugged and a test cable installed to test.
That 386 card is an Intel Inboard 386/PC with the 1 MB expansion daughter board. IIRC, the Inboard sold for around $1K (!), and the memory expansion card was in the $600-$700 range for the 1 MB unit, and the fully populated 2 MB version was around $1K. So, that card you found originally sold for about $1700.
Whew! Reminds me of the 100 MB hard drive that a friend bought for his Apple IIGS computer. He said it cost him $999.
@@philipclayberg4928 I bought an entire brand-new MacBook Pro in 2011 for $1100...
@@philipclayberg4928 The original ISA LIM 4 2mb EMS memory card available for the XT sold for about $1k per mb. A 20 mb half high Seagate hard drive was $650.
Flatheads are still king in industrial, farm, and basically any dirty/severe environment. Why? Because you can clear the head with the tip of the screwdriver. Philips, torx, etc, can't be cleared of debris. If you try to put the driver in them you will only compact the debris and make matters worse.
Something for your future video on accelerators. If I remember correctly (it has been 30+ years), there are four "turbo" modes on the Inboard/386, which you can select with Ctrl-Shift-Alt-1 through 4 (with 1 putting the CPU back to 4.77 MHz, 4 going to full-speed 16 MHz). I do remember an additional BIOS thing running during boot, where it initializes and counts the 2 MB of RAM on the accelerator. Maybe that came from a utility program.
Hmm a 386 put into 4.77, so you could finally play Digger properly... Aside from the odd badly written game i never saw any use for slowing down cpus that came with the infamous "turbo" switch many clones had.
Hi Adrian. Epictronics has recently made a video reconstructing a model F keyboard. The video title is about the 5155 restoration.
He posted another Model F video just today.
9:10 - Those nut-drivers were originally designed for hex-head (slot-less) sheet metal screws back in the day.
3/16- & 1/4-inch nutdrivers were the typical ones. Then Compaq came along and started using Torx head screws, as I recall.
I saw someone in another video mention it’s 5.5mm, so most hex drivers miss it (going from 5 to 6). It wasn’t even about IBMs, it was something else and they mentioned IBM used these heads too.
5.5mm = 0.2165354331 inches, pretty close to 0.25 (1/4 inch) so I think we could both be right. I don't think they were metric threads, but it's been so many years since I had to find replacement screws for that early a PC that I don't remember for sure.
@@bobblum5973 1/4 inch is 6.35mm so 5.5mm wouldn't make sense as being interchangeable.
@@eDoc2020 Thanks for correcting that. I think I fat-fingered the touch screen on my phone's calculator. I reworked it, and 5.5mm is roughly 7/32 of an inch. I think that's what I used since I didn't have metric sockets or nutdriver handy back then. 🤔
I always loved that IBM used Cork for feet on their original PC. These are the simple details I remember from back in the day. 5150 always reminds me of Van Halen's album. The 80s were the best years to be alive.
A truth big as a church my friend.
Nostalgia is a hell of a drug
Specifically Fel-Pro rubberized cork. I used #3026 which is 3/32" and comes in a 10"x26" sheet. It's very affordable- less than $7.
I had one of those crazy computers when they first came out. That reminds me what would you call a Cray computer if they used this model name/number?
Cray-cray
There is something really nice about the old systems with two 5.25" drives. I had an Atari ST with one 3.5" floppy drive, no hard disk and only 512kb RAM, so copying disks required a couple of disk swaps...
I had a similar setup. Though my father kindly had the ram professionally upgraded to 1mb a year or so after I received the ST for Christmas. None the less I swapped floppies a lot. A fantastic floppy drive that still works to this day. I loved my ST so much. I still have it.
@@blackterminal yes, the RAM upgrade makes a big difference! After a year or two I picked up another STFM with 4mb RAM which felt infinite. It was enough to set up a 2mb self-compressing ramdisk (Maxidisk) and still have more than enough to spare. Great memories learning to program with GFA Basic, Sozobon C and the various 68k assemblers on that thing. I had to get rid of them upon getting a PC in 1998, but picked up another pair of STs and a Falcon about 10 years later after finishing undergrad.
I was a co-op student at IBM starting a few months after the 5150 was announced. I spent many hours plugging in 16KB RAM chips on the "Type A" motherboards, followed by 64KB RAM chips when the "Type B" motherboards came out. Then the XT, the "XT hard drive nightmare", the AT, IBM Cluster Program, IBM PC LAN Program, and Netware on PC for K-12 education accounts. I finished my co-op assignment a few months before the PS/2 was announced.
I've taken my fair share of computers out of the trash and gave them a new life. The first computer that was mine was given to me by my aunt who got it from her boss as it was upgraded to Windows 95 and become BSOD city. It was an Epson with a Cyrix 486 50MHz CPU. That computer and reading the Macintosh Classic manual when my mom borrowed it from her father for college is what got me into computers and I built my first PC in 1997 when I was 10. That was fun.
I mean, this is super cool but WHY would you upgrade a 5150 to a 386? How much did that card cost vs. a comparable 386?
If you're in a brown recluse area, one thing you can do is to make sure your house has a decent number of cellar spiders. They're harmless to humans but specialise in eating other spiders, so having some around will massively reduce the number of brown recluses or black widows around. They're also very polite, staying off the floor, and they prefer dark, secluded areas, so you won't interact with them very much.
But chances are that spider was just another retrocomputer enthusiast whose ancestors had been patiently keeping the computer cockroach-free for the last decade.
I suspect the foam breaking down has made it conductive. Sounded like several keys were being held down at the same time, when the keyboard was connected.
Also, at around 52:00 you're holding one of the live wires from the voltage switch dangerously close to the PSU chassis, which is a ground connection.
I wonder how hard it would be to reverse engineer that accelerator card? It's always amazed me that with how many custom projects exist now to create new cards for old machines that no one has tried to make accelerators for these old 8088 based machines.
That accelerator looks like an Intel Inboard 386 - I've been watching a bunch of old Computer Chronicles recently and "Add-On Boards (1988)" was one of them - skip to 14:27 in that episode.
According to the guy from Intel it comes with 1 meg but the addon board clipped to yours should up that to 3.
It has its own Wikipedia page. "Intel Inboard 386" There were two versions: 386/PC and 396/AT. The PC version sold for $995 while the AT was $2,495 fully loaded. Real money back then.
Slotted screws have been around for 400+ years, and Phillips came to be sometime in the early to mid 1900's IIRC . Slotted screws are cheaper to manufacture, they allow for a lower profile screwhead, and you can put more torque into them before the screwdriver starts to cam out, especially if you're using a screwdriver with a hollow-ground blade. The only real advantage of a Phillips over a slotted screw is that it is self-centering. But that one advantage alone outweighs nearly all of the slotted screw's advantages combined. There are some situations where the slotted type of screw pulls ahead, such as the wrist and pocket watch industry where the screws holding the bits of the movement together are almost microscopic and flush-fitted. Where one errant sneeze can end up costing you hundreds or thousands of dollars. One of those screws rolls off the table and hits the carpet, you'll NEVER see it again. Lol....
9:06 I have those _exact_ same nut drivers! Same gold-and-black color scheme, too! From a toolkit I used back in college to repair PCs on the side. I forget where I got it originally but I'm pretty sure I have it around somewhere! It's been a while since I've had to use it; most modern PCs don't use the nuts those things were uniquely suited to drive.
Wow that brings back memories...
As a Canadian I must insist that the square drive, or Robertson as we know it here, is superior to all other screws...🤣🤣
Thanks for the blast from the past, as a lot of your videos are to me. I am from Portland and starting about 35 years years ago(when computers were expensive) I started buying broken and used computers computers and parts. I would rehab them and resell them. I have done everything from the 5150 on up. I recognized what you had the minute I saw it. One time I bought a bunch of XT's out of a warehouse down on Produce Row in SE Portland. About 4 or 5 of them had a 386SX card like the one in your video. Several of the clone XT's had the pop up lid cases where top of.case was like the hood of a car. They were great to use for testing cards, HD's and floppy drives. Seen and done a lot of things. 286-20&25 Harris cpu's that would out run any 386SX, taking MFM drives and using an RLL controller to format them and then double or drivesppace the drive to get more capacity, installing and getting to run operating systems that were supposed not to run on a computer that Installed it on and a bunch of other things. Almost nobody used to wipe their HD"s in those days, I got the surprise of my life when some of the XT"s I mentioned were from the IRS and still had the programs and data on them,. I wiped the drives and reformatted them in a hurry, kind of spooky when you think about it. I stopped selling my rehabbed computers when the new stuff got so cheap like an Athlon dual core and motherboard for $69.00 of which I still have one running to this day. Why buy used when new was so cheap. The only thing today that consider cheap is SSD"s, can buy a 500GB one for less than $30.00.
Giant spider 😁😆🤣😂
09:05 - I still have a tool set with those e exact same nut drivers. The set came in a "hard cover" zippered black leather case and has also screw drivers, tweezers and an IC puller. After over 3 decades the elastic bands that hold the tools in place got kind of stretched out (I managed to re-tight them), otherwise the kit is in pretty good shape. And it's what I still routinely use today for servicing my PCs.
Another great episode! I remember in the UK a company called Evergreen Technologies offering complete Pentium-class computer replacement cards for 486 and older machines - the old motherboard was completely bypassed and only used the ISA slot for physical support holding the 'accelerator' in place. The power supply and all IDE cables etc attached directly to the card. I worked in PC manufacturing at the time and they approached us to stock them as an upgrade option - sadly for them we really wanted customers to purchase new machines!
Happy national day for us Greeks ,and just fixed my amstrad PCW 8256!!!
This video was great to watch. I started my career working on these and other older IBM PCs, terminals etc. I remember there were so many adapter cards our customers would want installed. Math coprocessors, upgraded video, etc. You really took me into the wayback machine Mr. Peabody. Thanks!
Hi Adrian !!
You can use this accelerator pin out to make a cable to use in the MACH20 MICROSOFT Accelerator !!
Waiting this video !!
Oh my goodness, another Intel Inboard/386 !! ... as soon as I saw it in there I knew it looked just like the one we used to have. In fact, we also had the 386SX/16, with 2 MB of RAM. We did also have the 387 math co-processor (probably because my dad needed it for AutoCAD and other engineering software). I heard that we had one of the few that actually worked properly, but I've not corroborated that, I just know that it got us a few more years of use out of that machine. I even managed to get Windows 3.1 to run on it (in Standard Mode), despite the documentation explicitly stating it wasn't supported.
And to think that Microsoft once thought that no one would ever need more than 640K of RAM in their computer. Such naivete!
Amazingly, we talked MS into making a special Windows 386 for the Inboard 386. It was based on Windows 3.0. I think I still have the coffee mug MS sent the Inboard team when it was finished. The mug said, “Windows runs on the Inboard 386, who cares” 😅
Holee shit. I have the exact same Screwdrivers sitting in my tool kit. Different sizes, too. Could never remember where they came from. Somehow they just got inherited by every toolbox and I never quite figured out what to use them for. Thought they wer for some weird lug nuts. Well, this solves a mystery after 25+ years...
Approximately in 1998 I also encountered the same combo of 5150 and 386 accelerator in it. But my friend who got these boards, was not interested in retro computers and disassembled it for parts. It was not working (missing bios ROM). Also 386 board had only 1 meg and no second board for memory expansion. in all other ways it was pretty much the same (16 MHz and intel sticker inside). even the ribbon cable to 5150 CPU socket was of the same type and color. I begged 4 BASIC ROM chips from this and keep they in my collection until now.
I enjoy your "rescue" videos. My community has a "recycle" center. All the e-waste is tossed into a open dumpster and then sent out to be crushed and shredded. I have asked if I can pick from the pile of the doomed vintage computers that show up from time to time, but the recycle center refused to allow it. It's very frustrating and a little sad when I see a pile of computers from the 80s enter the dumpster to be destroyed.
Spiders are the reason I stopped buying stuff from Australia. :) The 386 board is super cool. I have a Sota 386 board that came with a Commodore PC10 my friend gave me. Never did really test how much of a difference it made. It had a spot for the original 8088 CPU and you could switch back and forth between that and the 386.
if the ram could be upgraded to 4 MB, running windows 95 on it would be a very watchable sight to see.
spade head screws are ok, you have venomous spiders not poisionous.... yes im dislexic... venom if it bites you, poison if you eat it.....
Epictronics did a keyboard refurbish video today. It is a good video on how to take it apart, replace the foam and get it back together.
I'm worried that the clown who last touched this machine was actually allowed to screw up more useful ones. I mean, screwing in the card without seating it in the slot... that's a special kind of stupid.
Even with the RAM on the accelerators, you _HAVE_ to have that first 16K of RAM in the board, or the system will NOT POST.
0:30 Ahh, Rogue - a classic game. I remember it well.
IBM still used slotted screws on the IntelliStation POWER 285 workstations of the early 2000's
Perfect timing for Epictronics's Model F video, today.
Great video! I got a very nice IBM PC 5150, with the 64-256k motherboard and a memory board, CGA and 2x 360k floppy drives in a garage sale this summer. The guy asked 20$ for it and I bought it right away. The guy was wondering a little bit why I didn't try to negotiate, but the price was already so good!
Damn you stole it. I would have too.
Man I love that 386 accelerator board!!!You need to put in a math coprocessor in that and fully expand the RAM! I wonder if you can put an even faster CPU in that 368 socket!! Can't wait to for some Coleco Adam content! 🤣
Hmm? Isn't that the one that wipes tapes left inside when turned on?
That keyboard doesn't have contacts. It uses capacitive coupling. As long as the keys clicks it should work.
20:30 the battery looked like a SAFT branded one. Those are often pretty reliable and leakproof. I had a TI chipset 286 motherboard with such a battery, no leakage at all.
32:40 Within this Basic: what does the function row at the bottom mean with "TRON" and "TROFF"?
Tron == Trace on
Troff == Trace off
This is to debug programs
@@sebastiendumais4246 Thanks!
"I don't trust that power supply!" - wise sayings!
Hello Adrian, your videos are a real treats to me, remembering when I had my ZX81, Apple IIe and Apple IIgs. Beware of the spiders ! Cheers
I currently have an original IBM XT motherboard (technically used to be in a Portable but at some point in history it got moved to a regular generic desktop case.) At some point I acquired an "Intel Inboard" myself, which contains a socketed 386DX. I pulled out the 386 and put in a 386-to-486 upgrade. So my XT motherboard reports itself in MSD (Microsoft Diagnostics) as a "486DX" with an XT bus.
When I was a kid, I had another specific 386DX upgrade which was called a "Kingston 486 Now!", which contained a socketed 486DX-33. First I changed it out to a 486DX2-66, then I replaced that with one of those "586" upgrade chips. (Don't remember which one.) Unfortunately I lost the Kingston part a very long time ago, and I've never been able to find another. I've long been curious if I could in fact make an XT motherboard have a ""Pentium"" CPU.
So what happened to the spider? "Crisis averted" means "squish"? 🤣
Hi Adrian, they did make adapters to use half height drives in these. My dad set one up for me when I was a kid with two half height 360K diskette drives and a ST-225 20 MB Harddrive. I didn't think I'd ever fill it. A company called Hauppauge Computer Works made 386 motherboards with 5 slots that would fit in those 5150 tin cans. I can remember using them to upgrade IBM PC 5150's to 386 in the late 80s.
Another previous ST-225 owner here, although I cheated and ran it with RLL-controller for extra 10MB of capacity. Worked flawlessly and as I know that old machine+hdd was still in active use in late 1990's.
Just today @Epictronics did a model f rebuild on his channel
The RAM on that RAM board is two weeks younger than I am, neat.
Had an Inboard 386 in my XT clone back in the day. These are actually pretty rare. I haven't been able to find one at a reasonable price. Remember running Ventura on a Hercules display and being fascinated by the images. You couldn't do that on the stock 8088.
The board is a version of the Intel Inboard 386/PC
In 1989 My Grandfather had this expansion card. He passed a few years later, and I did inherit this machine. His was populated with 2MB RAM, with 2 5 1/4 , one 3.5 and a standard 20mb Seagate drive. he had hacked a toggle switch to change from 1.44 to 1.2 drive A selection.
If you're happy and you know it
Syntax error
I tried going through the footage frame by frame, and it looks like the spider was hanging out on the underside of the floppy drive. When pulled out, it tumbles over the lip, runs back underneath the case, and possibly gets pulled along by a strand of webbing as the drive is pulled away.
I'd probably freak out too, I am not a fan of spiders. I don't care if they're "friendly", I don't want them around. "But they eat other bugs!" I don't want there to be other bugs for them to eat! If there's bugs, that's a problem that needs to be properly solved, not having a bandaid slapped onto it.
Dang a couple of those Inboard 386/PCs sold for almost $1300 each on eBay. I think they're rarer than you realize!
Hope to see more videos from you soon Nathan.
Ah its always funny to see that you can "relocate" your CPU with a ribbon cable that is like 8" long. Just image now, trying to move a 6GHz CPU somewhere else on a ribbon cable! 🤠👍
The sticky black foam inside the keyboard can become conductive and cause lots of issues on higher impedance circuits. Make sure you take it off and clean up the surfaces. I would also blow it off with a compressor... Thanks!
*Keyboard:* The foam (or something) is probably making it act like one or more keys are stuck down, so it's constantly sending codes or at the least not properly initializing.
*Floppies:* You connect floppy drives, don't change the DIP switches to enable them, and wonder why you're having issues? 😁
*Intel 386 InBoard:* I recognized it, or at least what it was. They made a fair number of InBoard and OutBoard upgrades back in the day. A family member upgraded a Packard Bell with a Pentium Overdrive; switching the turbo off gave us about a 10-MHz equivalent Pentium... Rather slow!
We need an intel inboard detailed video given that there is none on youtube! There is a special microsoft windows 3.0 for the inboard and some smart guys figured they could swap some drivers fromt that to make 3.11 works on an xt.
I have never even seen a 386 to 8088 accelerator card in real life. At best a few 68000 to 8088, 286, 386sx cards and I also own a 386 sx card for a PC 9801VX
It's like a Pentium MMX in a 386.
*_A 5150? That's insane! 😉_*
Eddie Van Halen agrees!
@@KeritechElectronics *_Well played, sir. 👍🏼🍻_* RIP EVH!
@@andyroid5028 The family has its own brand of guitars, amps and accessories.
That 386 card must have costed a fortune in 1987. My first PC was 286-16 and I bought it in 1990.
I seem to recall that a stuck key would prevent the original PC from booting.....
Jan needs badly to update his website.
I had the BIOS ROMS fail on my PS/2 Model 25 a few years back. It was a good thing I had spares from another one I tore down for parts- and it was a newer BIOS revision.
Got one of thoose Intel inboard 386 , it supports max 256k on motherboard
It's nice seeing a 5150 being brought back. I remember getting one at work when they came out, I was tasked with porting some PDP-11 programs to it. It was interesting to work on a new machine like this. I ended up porting software and writing new stuff, wrote quite a bit of assembly code to make it do some cool things. Loving the channel!
But what exactly IS original, in a machine that was designed with off-the-shelf parts in 1981? Isn't in-promptu utilisation of whatever is available "original" for the PC? Isn't a computer with a 8088 as original as any other one? Wouldn't be a rose by any other name smell just as sweet?
"I switched it to no floppy drive. I wonder why the floppy drive doesn't work" :) hehehe my first thought was "you forgot to switch the thing back to on".
38:00 with shorter cables often termination was done on the controller side just to make it simpler and working.
I love such old IBM maschines. I am grow up with those decates ago and it was painfull to install or change hardware settings, because they don't had a rom resident BIOS setup, that every regular PC since the late i286 Modells have. Harddrive - ST506/ST511 Interfaces with a ibm diagnostic disk. I had used that time an 32MByte Seagate ST238R in combination with an Omti 5520 RLL Controller. A gread hard drive that time.
The system don't know virus or ransomware attacks. Nothing works if you don't start them. Well, sometimes is miss that time.
The forst maschines started into Basic loaded from ROM. Later this was replaced by GWBasic started from MS-DOS by a Disk.
A fine system was MS-DOS 3.22 and Turbo-C to get experiences in programmin "C" languages. I remember about the EMM/EMS-Ram expansion and some of the autoexec.bat lines of code to load some of the background programms into higher memory. Don't miss this stupid things.
IBM 5150...with a 386 CPU ISA expansion card. Now I have seen everything in retro computers. Also...I want one!
I don't care how old or unique a system is, if a spider comes out of it, the system will sit outside for at least a day ;)
Ummm... Why? So it can get a few more? lol ＼(^o^)／
Always amazed at your knowledge of old tech. My first experience with computers was with the Apple IIc and Apple IIe, and the first gen Macs, all with green or amber displays. My first word processor was Appleworks. I created pictures of trucks, motorcycles, etc. with nothing but char$, (character strings) in DOS. That took a lot of lines. Amazing how far tech has evolved. I'm 68, now. My only computer is an Omen 17 gaming laptop with an Intel Core i7 8750h processor and Nvidia 1660 Ti graphics IC. It isn't top tier, but plays games pretty well. Still miss those old machines, working with DOS and Basic. You actually bring back a lot of those memories. Thanks for that.
This video enticed me to pull my old 5150 out of the closet. Mine has a NEC v20 CPU, math coprocessor, 640kb, 30mb Miniscribe RLL hard drive, 1.44mb and 360k diskette drives, and a 8 bit ISA VGA graphics card, think it came from a IBM PSI but not sure.
16MHz 80386 instead of 4.77MHz 8088 sounds good in principle. But all I/O over 8-bit 4.77MHz AT-bus sounds really horrible... And I've used PC's since around 1985.
The IBM PC was the first microcomputer I felt but at Control Data Institute in 1988. Today, I use my second brand all-in-one microcomputer which is Dell. Once I got my hands on my own microcomputer, which was Cybernet in 2002, I did not want to look back as did Lot's wife. 😀
Mid 90's IBM Aptivas (re-badged Acer PC's meant for consumer use) also used flat-head screws. In college I had a job bludgeoning student PC's on to the dorm network. (10Mb 10BaseT, Netware, and Windows 95, just one year after release.) Those Aptivas were the bane of our existence; we cut our fingers trying to remove those stupid screws (our toolkits did not have a nutdriver that would remove them) and getting NetWare Client32 installed and working on them usually took about 3 hours, most of which was spent plumbing through the depths of the registry, trying to figure out how the installer screwed up.
Nice! I've got one of these old Rev A boards and I had to replace tantalums, due to multiple shorts.
That accelerator board is a nice score!
Accelerators are not that rare. If you have an obsolete PC, a Accelerator to keep a machine relevant and useful is not that uncommon. Most of these boards were designed to run 8088 code faster rather than '386 specific code. The machine would probably be more useful as an 8088 PC, so stick in an NEC V20 and 27x 4116 DRAM and find a 576k ram card and a video card.
11:05 - Heathkit as well as Dynaco and just about any other kit company back in the day (1960s.1970s) employed slotted screws while most consumer stuff used Phillips! (?)
If you stop to think, after having paid out around $1.5k for a 5150, the $495 upgrade by the InBoard Intel 386 was just protecting the original investment for private parties or small companies.