Pretty sure it has been made known, but the 487SX was an overpriced math-coprocessor upgrade for 486SX systems. As for the RAM, I recall hurting my fingers getting those ****'n SIMM's installed on those motherboards. Ahh, nostalgia.
just out of curiosity, how much space does the 5 1/4 disks store? I have a bunch of old ones and was wondering if I could use them for fun or just sell them...
@vwestlife speaking of those 5 1/4s did you ever have to do the disk swapping with the dual drive ones ? I have one that still does that. Still looking for one of those Commodore PETs with the cassette tapes that i used to use in middle school. Guess I'll quit now, seeing that i'm telling my age from the Commodore PET comment...lol...
I miss this style of computers. could do more changes to those old birds then with newer computers today. built to last to. im sure they start long after computers today reach that age. kinda wish i still had my 1st computer. i dont know even what i did with it. still got the keyboard how ever. space saver model m. oldest computer in my collection is a old packer bell. forget the model i only had it out twice, it has a blown HDD, last turn on hear a pop from the HDD. It post just fine otherwise
My AMD 5x86-133 machine is rockin' it with an Diamond Stealth 64, Sound Blaster 16, 8 gig HDD, and 16 MB of RAM... though I wanna upgrade it to 32 or 64MB [the mother board I use supports 64MB] and MS-DOS 6.22 with Windows 3.11 for Workgroups. I have it connected to the internet via ethernet as well and it's pretty nice considering it's age.
However I mainly use it for classic gaming, personally I prefer to play classic DOS games on actual hardware and not emulation so no DOS Box for me! :D
AMD 5x86-133 = awesomeness! Best darn 486 CPU ever. [Just my opinion anyway]. With some tweaking it'll run Quake, a bit choppy compared to an actual 586 Pentium, but it does run and is playable. :)
@linuxlove4004 Only for installing. You could fit a pentium overdrive (or maybe one of those 586-compatible upgrades too), install and then reinstall the 486. The setup doesn't actually "use" 586 features, but rather check for 2 instructions present in the pentiums but not in 486s. If it finds them it lets you install, otherwise it's like "oh, no pentium no install, kthxbye".
older simms had huge problems with the tinning at the bus connector. Try using a pc eraser on them, and if that doesnt work, tin them with solder. Chances are they still work...
I've revived many thought to be dead sticks of ram with just simple lead free solder, and desoldering braid! :)
486-based PC's were the most mysterious and entertaining PC ever invented: tons of differencies between several modles,upgradeable porcessors, dipswitches,propietary slots...no modern PC would equal them. in term of entertainment!
is that an old Acer CRT monitor? I had identical one with my Acer Veriton 5100 but it died along with the motherboard and keyboard. the only thing left from the computer is the mouse which for some reason outlasted the rest of the thing and I now use with an old Compaq Presario desktop PC.
How's the memory performance? I used to have a board with OPTi 495SX chipset, what a slug (like 8 MB/s read in main memory according to SST 4.78). The newer 895 chipset was much faster (~30 MB/s read, almost 40 with a 5x86-133), and the difference in performance was quite pronounced even with the same DX/2-66. Shame the 5x86-133 didn't like my big old AT PSU and turned off its cache.
Oh, first time I saw a slimline 5-1/4" drive. I did know combos.
@yeoldeengineer I noticed that the tenth cache socket on his motherboard is empty. Odds are that's a dirty TAG socket. Putting an 8K * 8 SRAM there (assuming he's using all 8K * 8 SRAMs of course) should help cache and memory controller efficiency quite a lot, as it will enable write-back cache mode.
wow my great grandma has this same computer..i recognized the triangle logo..im looking for this computer..hopefully ill find it because it works really well.
I would be sure to set the voltage right on that AM5x86 CPU (Vcore 3.45 Volts) as a double check in case you haven't done this yet.Some Intel 486 CPU's use 5 volts,3.3 or 2.5-2.9 (rare).Setting it at 3.3 Volts is within parameters.If the voltage is not set right the CPU will fail in about a year.
Also put a small CPU fan over that CPU heatsink.I've seen a PC with that exact CPU act erratic and unusable on an IBM machine (The CPU was too far gone and even with a fan it still acted unstable).
@m9078jk3 The 5x86 upgrade module has its own onboard voltage regulator to convert the motherboard's 5 volts down to 3.3 volts for the CPU. And it uses the low-power laptop version of the 5x86, so it doesn't need a fan.
Thats an awesome setup you got there with that computer. I have a Leading Edge WinPro 486SLC. that I'm working on. I have never seen a cpu card before... interesting
Well I guess you answered the eisa guestion for my but you might want a isa scsi card and an isa network card if your interested in networking the computer?
@theshermany I do have an ISA Ethernet card, and I don't have much use for SCSI in PCs. I do have one full-height 5¼" 1.2 gig SCSI hard drive with an ISA controller, but it wouldn't even fit into this computer!
I have a 1991 Leading Edge laptop... very old. Allows you to have an addon CPU for "mathematical calculations" (supposedly specialized for documents such as Excel and advanced calculators)
They'll run Windows 95 just fine. I used to work for a large (largest?) Leading Edge dealer in NJ (Cottage Computers) and fixed quite a few of these. I wouldn't be surprised if it was in the shop before, actually kinda surprised it wasn't purchased there.
@NJRoadfan My dad actually bought a Leading Edge 486SLC laptop from Cottage Computers, way back around 1992 or so. He used it for many years until the monochrome LCD went dead. Then the laptop still worked, but you had to hook it up to an external monitor.
Haha, Goldstar RAM... not surprising they died. I had some on a random clone PC die on me as well back in the day, and of course there was the 3DO that they didn't do the most high-class job of manufacturing.
Sweet machine. Leading Edge, ahh the memories. They had quite an ad campaign from what I recall
Who's the mother board made by? I find it interesting that it says Leading Edge 486 mini tower at startup, I'm guessing that was programmed into the BIOS at the shop where the computer was assembled.
Always good to see a computer that was just on the brink of getting thrown in the trash and you saved it! Now it will have many happy years in your house :)
its a DAEWOO ! but leading edge was not sold in korea,it was completely owned by daewoo corp in newjersey,(the big blue building @ the end of the NJTP north) ! and was the export american brand for daewoo. sometimes you can find the daewoo telecom logo under the leading edge sticker on the case, the korean domestic models of these computers came fully loaded unlike the export model
Wow, that's pretty cool! And I didn't know that about the 487 coprocessors! Does that mean you can stick an ordinary 486 in a 487 socket?
I forgot all about the AMD am5x86. I don't know why AMD called it 5x86, since it is technically unrelated to the Intel Pentium and the P5 architecture as a whole, as far as I know. In performance it only compares to a 75 MHz Pentium, due to the 33 MHz system bus.
What kind of video card and OS are you going to have on this?
@themaritimeman The 486SX was the same thing as the 486DX, but with the math coprocessor internally disabled. But instead of just containing the math coprocessor separately, the "487SX" was an entire non-crippled 486DX chip, with a special pinout so that it would disable the 486SX and take over as the computer's main processor. It was a failed marketing scheme by Intel, so most people just swapped out the 486SX itself for an upgraded CPU, and didn't even bother with the "487SX" scam.
@themaritimeman Probably not; the pinout is different. Most later 486SX boards don't even have the 487SX socket, because once Intel's scheme was exposed, nobody fell for it. Instead, Intel focused on their "Overdrive" socket, which allowed a 486 board to be upgraded to a Pentium. Ultimately, the Cyrix and AMD 5x86 chips were equally as fast as the Pentium Overdrive and much cheaper, so that too was a failure for Intel.
@Maxxarcade The bad RAM was original to the Leading Edge. And it's an exception, because otherwise, 30- and 72-pin SIMMs have been very reliable for me. I have modern SDRAM DIMMs go bad left and right on me (leaving many Windows errors in their wake), but old SIMMs just last and last.
lol back in 98 ~2000 we recycled tons of these in korea that either banks used or daewoo wanted then to "disappear" lots of good scrap inside including gold,back them a 20 ft sea container of scrap exported to the states via newark sent to NH to be recycled of all its metals would bring in $13.000 back then when gold was cheap ! now my friend recycles them right in korea as he has the master license on the recycling tech , even licensed samsung and others,now they recover all their waste
Christ... I didn't know any of these were left! I've just salvaged a "small footprint" desktop (keyboard with built-in computer) that I'll post a video of shortly; it was purchased by the school district in the late 1990s as a "test" machine (we were going to buy tons of them), but it failed to meet expectations, and has been sitting in a closet for ten years.
@bbishoppcm I also have a Gateway 486DX-33 slimline desktop PC of around the same age as this, including the infamous "AnyKey" mega-sized keyboard. I should make a video of it.
@vwestlife If you do, could you also cover how to program the macro keys? I've had a few of those in the past, but could never quite figger that one out... I guess I could always google it...
@bbishoppcm There are web pages dedicated to the AnyKey which could explain it much better than me, as I never used one back in the day, and I wouldn't use its advanced features anyway.
@vwestlife i might still have the original keyboard that came with it new in the box as i didn't use it ,i used a korean langush font keyboard instead, i will check the parts room or garage to see if its still there if it is there its yours if you want it, i still got one of these daewoo computers working in the parts room for parts info ,# & data,and stock,it sill works good for a 17 year old brain,its @ my newyorl location !
I got a Leading Edge PC in the basement.
sr71ablackbird 2 months ago
i wish u could do all that today with the upgradeing cpu cache and shit but no
BassPounderX 2 months ago
Pretty sure it has been made known, but the 487SX was an overpriced math-coprocessor upgrade for 486SX systems. As for the RAM, I recall hurting my fingers getting those ****'n SIMM's installed on those motherboards. Ahh, nostalgia.
terracon 2 months ago
Heh, I think I've seen a few of these Leading Edge PC's before.
terracon 2 months ago
just out of curiosity, how much space does the 5 1/4 disks store? I have a bunch of old ones and was wondering if I could use them for fun or just sell them...
bakonfreek 2 months ago
@bakonfreek Double-density (a.k.a. "low density") 5¼-inch disks store 360 KB, and high density 5¼-inch disks store 1.2 MB.
vwestlife 2 months ago
@vwestlife speaking of those 5 1/4s did you ever have to do the disk swapping with the dual drive ones ? I have one that still does that. Still looking for one of those Commodore PETs with the cassette tapes that i used to use in middle school. Guess I'll quit now, seeing that i'm telling my age from the Commodore PET comment...lol...
sr71ablackbird 2 months ago
@vwestlife My retro rig is a AMD K5-PR100 with Win95.
bacovia2004 3 weeks ago
Do you know, if GoldStar has something to do with Lucky Goldstar (LG)
Halterung01 2 months ago
@Halterung01 Yes, Goldstar became LG after merging with a company called "Lucky" in 1995.
vwestlife 2 months ago
you sound like the guy off ncis
ThatSingingMac 3 months ago
I bet hacking Windows XP would be really easy nowadays... and still no one's ever made a serious effort to get Windows XP running on a 486?
kargaroc386 3 months ago
I miss this style of computers. could do more changes to those old birds then with newer computers today. built to last to. im sure they start long after computers today reach that age. kinda wish i still had my 1st computer. i dont know even what i did with it. still got the keyboard how ever. space saver model m. oldest computer in my collection is a old packer bell. forget the model i only had it out twice, it has a blown HDD, last turn on hear a pop from the HDD. It post just fine otherwise
TroyFoxxin 3 months ago
Goldstar RAM? My old VCR was made by Goldstar.
jonvincent12 4 months ago
My AMD 5x86-133 machine is rockin' it with an Diamond Stealth 64, Sound Blaster 16, 8 gig HDD, and 16 MB of RAM... though I wanna upgrade it to 32 or 64MB [the mother board I use supports 64MB] and MS-DOS 6.22 with Windows 3.11 for Workgroups. I have it connected to the internet via ethernet as well and it's pretty nice considering it's age.
However I mainly use it for classic gaming, personally I prefer to play classic DOS games on actual hardware and not emulation so no DOS Box for me! :D
Chaniyth 5 months ago
AMD 5x86-133 = awesomeness! Best darn 486 CPU ever. [Just my opinion anyway]. With some tweaking it'll run Quake, a bit choppy compared to an actual 586 Pentium, but it does run and is playable. :)
Chaniyth 5 months ago
o-o I want it.
TheStuartWallace 5 months ago
nice old stuff... love it !!
Vocoder07 5 months ago
What was he using it for?
kaiserwilhelm 6 months ago
a 486 it can run xp!
fennectech 9 months ago
nope. windows xp requires a Pentium or higher.
linuxlove4004 7 months ago
@linuxlove4004 Only for installing. You could fit a pentium overdrive (or maybe one of those 586-compatible upgrades too), install and then reinstall the 486. The setup doesn't actually "use" 586 features, but rather check for 2 instructions present in the pentiums but not in 486s. If it finds them it lets you install, otherwise it's like "oh, no pentium no install, kthxbye".
cossasomi 6 months ago
zomg 4 mb ram
FallenPaladin85 9 months ago
older simms had huge problems with the tinning at the bus connector. Try using a pc eraser on them, and if that doesnt work, tin them with solder. Chances are they still work...
I've revived many thought to be dead sticks of ram with just simple lead free solder, and desoldering braid! :)
waytostoned 9 months ago
486-based PC's were the most mysterious and entertaining PC ever invented: tons of differencies between several modles,upgradeable porcessors, dipswitches,propietary slots...no modern PC would equal them. in term of entertainment!
awfulguitarplucker 9 months ago
is it better than a gameboy color? xD
MrArtus50 9 months ago
omg, this is the best gamer- PC... xD
MrArtus50 9 months ago
WoW! I remember building machines way back when using that type of hawrdware... Sometimes we used 72 pin EDO SIMMS.
ntkernel 10 months ago
is that an old Acer CRT monitor? I had identical one with my Acer Veriton 5100 but it died along with the motherboard and keyboard. the only thing left from the computer is the mouse which for some reason outlasted the rest of the thing and I now use with an old Compaq Presario desktop PC.
Nice video & computer =)
IamFat32 10 months ago
Put Windows 95 in it!!
Good video :)
Mr1p0d 11 months ago
muito louco
eu tenho um processador em perfeito estado 486
=^,^=
fox270988 1 year ago
Pretty nice construction on that one.
How's the memory performance? I used to have a board with OPTi 495SX chipset, what a slug (like 8 MB/s read in main memory according to SST 4.78). The newer 895 chipset was much faster (~30 MB/s read, almost 40 with a 5x86-133), and the difference in performance was quite pronounced even with the same DX/2-66. Shame the 5x86-133 didn't like my big old AT PSU and turned off its cache.
Oh, first time I saw a slimline 5-1/4" drive. I did know combos.
yeoldeengineer 1 year ago
@yeoldeengineer I noticed that the tenth cache socket on his motherboard is empty. Odds are that's a dirty TAG socket. Putting an 8K * 8 SRAM there (assuming he's using all 8K * 8 SRAMs of course) should help cache and memory controller efficiency quite a lot, as it will enable write-back cache mode.
Eep386 11 months ago
wow my great grandma has this same computer..i recognized the triangle logo..im looking for this computer..hopefully ill find it because it works really well.
DURAMATRIX112 1 year ago
Now 32 MB of RAM is fine for Windows 95, as long as you don't install the internet explorer desktop update.
I can't wait to see this computer running Windows 95 (or anything at that matter)
kargaroc386 1 year ago
That's one hell of a motherboard...
The only place I ever saw one of those was in a dream I had recently...
kargaroc386 1 year ago
Leading not kneading... Sorry
MSNWindows7 1 year ago
Look at my kneading edge computer on my YouTube page
MSNWindows7 1 year ago
32mb ram is more than adequate for windows 95 - heck, 95 will even run fine in 4/8mb
DeepBlueDDR 1 year ago
wtf? 1mb each? I hold over 4gb each
SpartanKitteh0659 1 year ago
I would be sure to set the voltage right on that AM5x86 CPU (Vcore 3.45 Volts) as a double check in case you haven't done this yet.Some Intel 486 CPU's use 5 volts,3.3 or 2.5-2.9 (rare).Setting it at 3.3 Volts is within parameters.If the voltage is not set right the CPU will fail in about a year.
Also put a small CPU fan over that CPU heatsink.I've seen a PC with that exact CPU act erratic and unusable on an IBM machine (The CPU was too far gone and even with a fan it still acted unstable).
m9078jk3 1 year ago
@m9078jk3 The 5x86 upgrade module has its own onboard voltage regulator to convert the motherboard's 5 volts down to 3.3 volts for the CPU. And it uses the low-power laptop version of the 5x86, so it doesn't need a fan.
vwestlife 1 year ago
wow i didnt know goldstar/LG made ram back then? thats awesome!!
DURAMATRIX112 1 year ago
my Canon Innova Book 360CD Laptop has the same BIOS
dan1986ist 1 year ago
Thats an awesome setup you got there with that computer. I have a Leading Edge WinPro 486SLC. that I'm working on. I have never seen a cpu card before... interesting
xUltraVioletDreamx 1 year ago
aw man I remember SIMM memory. They had to be installed in pairs. Seems strange all 4 modules crapped out at once.
ManiacalMichael504 1 year ago
Well I guess you answered the eisa guestion for my but you might want a isa scsi card and an isa network card if your interested in networking the computer?
theshermany 1 year ago
@theshermany I do have an ISA Ethernet card, and I don't have much use for SCSI in PCs. I do have one full-height 5¼" 1.2 gig SCSI hard drive with an ISA controller, but it wouldn't even fit into this computer!
vwestlife 1 year ago
I believe the brown slot close to the is eisa I have an eisa scsi wide card if your interested?
theshermany 1 year ago
you have many computers there! :D
skateboard3011 1 year ago
I have a 1991 Leading Edge laptop... very old. Allows you to have an addon CPU for "mathematical calculations" (supposedly specialized for documents such as Excel and advanced calculators)
Zylstra555 1 year ago
They'll run Windows 95 just fine. I used to work for a large (largest?) Leading Edge dealer in NJ (Cottage Computers) and fixed quite a few of these. I wouldn't be surprised if it was in the shop before, actually kinda surprised it wasn't purchased there.
NJRoadfan 1 year ago
@NJRoadfan My dad actually bought a Leading Edge 486SLC laptop from Cottage Computers, way back around 1992 or so. He used it for many years until the monochrome LCD went dead. Then the laptop still worked, but you had to hook it up to an external monitor.
vwestlife 1 year ago
Comment removed
NJRoadfan 1 year ago
Haha, Goldstar RAM... not surprising they died. I had some on a random clone PC die on me as well back in the day, and of course there was the 3DO that they didn't do the most high-class job of manufacturing.
Sweet machine. Leading Edge, ahh the memories. They had quite an ad campaign from what I recall
phreakindee 1 year ago
Who's the mother board made by? I find it interesting that it says Leading Edge 486 mini tower at startup, I'm guessing that was programmed into the BIOS at the shop where the computer was assembled.
Lachlant1984 1 year ago
@Lachlant1984 The motherboard was made by Daewoo.
vwestlife 1 year ago
so much for "they don't make ram like they used to"
maskedmillionaire 1 year ago
Always good to see a computer that was just on the brink of getting thrown in the trash and you saved it! Now it will have many happy years in your house :)
jmurray01 1 year ago
Neat! I've never heard of an AMD 586.
I think I'll have to do a video on my '95 Touch EN6400 Pentium 1 computer now.
It's nice when you can find an old computer and save it. I plan to go to my local recycling depot and see if there is anything worth saving.
ForgetfulCollector 1 year ago
now these are the real computers
bensonak47 1 year ago
its a DAEWOO ! but leading edge was not sold in korea,it was completely owned by daewoo corp in newjersey,(the big blue building @ the end of the NJTP north) ! and was the export american brand for daewoo. sometimes you can find the daewoo telecom logo under the leading edge sticker on the case, the korean domestic models of these computers came fully loaded unlike the export model
daewooparts 1 year ago
Wow, that's pretty cool! And I didn't know that about the 487 coprocessors! Does that mean you can stick an ordinary 486 in a 487 socket?
I forgot all about the AMD am5x86. I don't know why AMD called it 5x86, since it is technically unrelated to the Intel Pentium and the P5 architecture as a whole, as far as I know. In performance it only compares to a 75 MHz Pentium, due to the 33 MHz system bus.
What kind of video card and OS are you going to have on this?
Great video!
themaritimeman 1 year ago
@themaritimeman The 486SX was the same thing as the 486DX, but with the math coprocessor internally disabled. But instead of just containing the math coprocessor separately, the "487SX" was an entire non-crippled 486DX chip, with a special pinout so that it would disable the 486SX and take over as the computer's main processor. It was a failed marketing scheme by Intel, so most people just swapped out the 486SX itself for an upgraded CPU, and didn't even bother with the "487SX" scam.
vwestlife 1 year ago
Yeah, I know all of that. I just asked if it was possible to use an ordinary 486DX in a 487SX socket, which I guess the answer is no.
themaritimeman 1 year ago
@themaritimeman Probably not; the pinout is different. Most later 486SX boards don't even have the 487SX socket, because once Intel's scheme was exposed, nobody fell for it. Instead, Intel focused on their "Overdrive" socket, which allowed a 486 board to be upgraded to a Pentium. Ultimately, the Cyrix and AMD 5x86 chips were equally as fast as the Pentium Overdrive and much cheaper, so that too was a failure for Intel.
vwestlife 1 year ago
hey, I see you have a pic from my Picasa web album ;-)
I was hoping it was an Eisa card when I bought it
I guess I should have watched the entire vid before I made my first comment
Jivemaster2005 1 year ago
Are you sure it's an Eisa slot and not a Pisa or an Opti Local Bus slot since they are identical?
Jivemaster2005 1 year ago
32megs of RAM? That's actually quite a bit for a 486 pc.
talldude123 1 year ago
Those AMD 586's are sweet. I used to run mine at 160Mhz by setting the motherboard to 40Mhz. It was a beast of a 486.
The bad RAM looks like it may be for some other system. Maybe IBM PS/2?
I have an ALR Flyer 32DT that has a very similar setup, with the dual CPU sockets on a card. I also put a 586 in that.
Maxxarcade 1 year ago
@Maxxarcade The bad RAM was original to the Leading Edge. And it's an exception, because otherwise, 30- and 72-pin SIMMs have been very reliable for me. I have modern SDRAM DIMMs go bad left and right on me (leaving many Windows errors in their wake), but old SIMMs just last and last.
vwestlife 1 year ago
wow is that EISA?
linuxlove4004 1 year ago
ah yes it is. cool.
i wish i had something like this, it's a pain trying to copy files to a 720KB floppy on my PS/2 model 25.
linuxlove4004 1 year ago
and it's not .-.
linuxlove4004 1 year ago
lol back in 98 ~2000 we recycled tons of these in korea that either banks used or daewoo wanted then to "disappear" lots of good scrap inside including gold,back them a 20 ft sea container of scrap exported to the states via newark sent to NH to be recycled of all its metals would bring in $13.000 back then when gold was cheap ! now my friend recycles them right in korea as he has the master license on the recycling tech , even licensed samsung and others,now they recover all their waste
daewooparts 1 year ago
leading edge computers are made by daewoo in korea,just rebadged daewoo telcom computer
daewooparts 1 year ago
Christ... I didn't know any of these were left! I've just salvaged a "small footprint" desktop (keyboard with built-in computer) that I'll post a video of shortly; it was purchased by the school district in the late 1990s as a "test" machine (we were going to buy tons of them), but it failed to meet expectations, and has been sitting in a closet for ten years.
bbishoppcm 1 year ago
@bbishoppcm I also have a Gateway 486DX-33 slimline desktop PC of around the same age as this, including the infamous "AnyKey" mega-sized keyboard. I should make a video of it.
vwestlife 1 year ago
@vwestlife If you do, could you also cover how to program the macro keys? I've had a few of those in the past, but could never quite figger that one out... I guess I could always google it...
bbishoppcm 1 year ago
@bbishoppcm There are web pages dedicated to the AnyKey which could explain it much better than me, as I never used one back in the day, and I wouldn't use its advanced features anyway.
vwestlife 1 year ago
@vwestlife i might still have the original keyboard that came with it new in the box as i didn't use it ,i used a korean langush font keyboard instead, i will check the parts room or garage to see if its still there if it is there its yours if you want it, i still got one of these daewoo computers working in the parts room for parts info ,# & data,and stock,it sill works good for a 17 year old brain,its @ my newyorl location !
daewooparts 1 year ago
@vwestlife Could you make a video of it?
MixerVM 10 months ago
I remember we had "Leading Edge" PC's in high school (late 80s). All amber monochrome display. 286(?) processor.
jasonlava 1 year ago