Re: Fake cache RAM... on Pentiums?

Posted on 2017-06-21, 23:51

by

by Deksor

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I've never seen bad ATC boards. Maybe they've done some but I never heared of them then. Looking at your board, I can see two UMC chips that should be the sram chips for the cache. Prehaps there's something wrong with the cache configuration

---

Re: 440LX and 100MHz FSB

Posted on 2017-06-20, 15:22

by

by Deksor

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Can't faster celerons be run in these motherboards ? I think the fastest Celeron chip with 66MHz FSB is the Celeron coppermine 766. I've myself a Celeron 733MHz and I'm pretty sure that it could run without any problems in an LX board (maybe it will need some bios Update, maybe even some patching, …

---

Re: Which of these two 486 motherboards would you choose?

Posted on 2017-06-18, 19:33

by

by Deksor

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yeah and the bottom one has a regulator close to the socket so it's probably supporting 3.3V cpus ! The top one has UMC chipsets, but it looks to be munch older and simpler (the ram is only 30pins) while the ALI one has one more VLB, 72pins RAM, etc ... I'm still looking for one of these but the …

---

Re: This motherboard hates VLB video cards

Posted on 2017-06-17, 18:27

by

by Deksor

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes problems happened on both VLB ports. The settings were correct too (and the problem happened when the CPU was an SX too). I repaired the surface mount chip and it worked back but it still had this problem. I tried to reflow another chip and now it doesn't work at all :( One thing to note is that …

---

Re: 8 bit RTC card : what are these components ?

Posted on 2017-06-15, 14:29

by

by Deksor

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I knew it ! Thanks for the specs of these caps 😀 . I'm not sure if I'll be able to find new ones in the same kind of packaging but that should be better than nothing

---

8 bit RTC card : what are these components ?

Posted on 2017-06-14, 15:32

by

by Deksor

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I've bought this RTC + floppy controller card recently. At first it made the PSU unable to start. Since this was the sign of a short circuit that I already had with the HDD of the same machine, I started to check continuity on some of the components of the card. I found out that two of these …

---

Re: This motherboard hates VLB video cards

Posted on 2017-06-13, 12:53

by

by Deksor

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Okay so I reflowed the solder joints in the area of the keyboard controller. At first it didn't change anything but then I saw that the video card was plugged incorrectly. Pushed it back into the slot and it worked flawlessly. Maybe it was just plugged incorrectly before but it seems to be more …

---

Re: This motherboard hates VLB video cards

Posted on 2017-06-12, 23:04

by

by Deksor

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I already did ^^ the original cpu was an SX25 but I quickly replaced it with a DX33 I may have found the area causing issues. Right next to the keyboard chip is another smaller chip (not the bios rom). Every time it fails to POST (except for the vlb stuff), pressing on it makes the board to POST. …

---

Re: This motherboard hates VLB video cards

Posted on 2017-06-12, 20:32

by

by Deksor

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I tried 2 VLB cards : a Western Digital one and a Cirrus logic GD5424. The second ISA card was a trident like I said and it does the same thing but if it's picky now, it wasn't before because the trident card came with the computer. One thing interesting is that even though the battery isn't plugged …

---

Re: This motherboard hates VLB video cards

Posted on 2017-06-12, 18:29

by

by Deksor

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Theses modules are from other dead computers so yeah maybe they're not healthy. However that parity error doesn't appear all the time so I don't really know. I should plug the battery back in (if it still works), I know that some boards don't like to not have any battery. The chips were never built …

---

This motherboard hates VLB video cards

Posted on 2017-06-12, 15:43

by

by Deksor

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi everyone Yesterday I bought this motherboard at a garage sale : http://i.imgur.com/x7w3SGLl.jpg It works, but if I try to put a VLB video card, it won't POST at all. The POST card I'm using to check it doesn't show up any numbers when I put a VLB card. When I put a crappy Realtek ISA card, it …

---

Re: Bought these (retro) hardware today

Posted on 2017-06-11, 22:29

by

by Deksor

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Looks like it is. I don't know if it's communicating in XT or AT mode. However there are 4 leds on the board but they didn't do anything when I powered the board :(. The POST card didn't output anything either and there was no video either. Finding informations for these might be difficult too :/ At …

---

Re: Bought these (retro) hardware today

Posted on 2017-06-11, 21:09

by

by Deksor

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Bought this in at a garage sale : IMG_20170611_225011.jpg Some odd 286 ISA board (there was also an 8088 one) IMG_20170611_224952.jpg Coming with something to connect them with other cards I guess. I didn't manage to make it work unfortunately IMG_20170611_225019.jpg What looks to be an RTC board. …

---

Re: Bought these (retro) hardware today

Posted on 2017-06-08, 19:37

by

by Deksor

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Bought this today..... It has all the cables, the powersupply, mouse, two "the arcade" joysticks, a full box of disks, original manuals and an extra external floppy drive. Really looking forward to play some games on it. s-l640e.jpg I've found one last week-end ! However mine has no yellowing at …

---

Re: Anyone know what this mobo is? (486WB-4A3B1)

Posted on 2017-06-06, 05:23

by

by Deksor

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Before doing anything, please remove that battery because they tend to fail these days, and when they do, it takes the motherboard with them because they leak everywhere, the traces start to corode themselves ...

---

Re: Pentium III (440bx) parts suggestions

Posted on 2017-05-31, 21:30

by

by Deksor

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I've found RPLD that runs under linux, but like I said, almost no informations on how to use it :( My 486DX 33 can detect the server, but once it tries to receive stuff and to boot on it, it goes completely wrong I'm currently building an NT4.0 server with a LOT of SCSI HDDs that I will put in raid …

---

Re: Pentium III (440bx) parts suggestions

Posted on 2017-05-31, 19:09

by

by Deksor

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Well you can do this with any computer you want, this is not only doable on a pi. You can do this on pretty munch any computer you want if it runs linux. Unfortunately, I stil can't figure out how to do RPL boot which is the "old way" of netbooting computers. With this, I can boot any computer with …

---

Re: custom windows 98 SE install disk

Posted on 2017-05-31, 18:02

by

by Deksor

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I'm working on making a USB bootable 98SE that transfers the OS to the Ramdrive and runs of it entirely. But will have to patch it so it works on P3 and P4 and for newer than P4 up to Z97. At the moment just working on trying to patch it without commercial tools for over 512MB usage and possibly …

---

Re: Pentium III (440bx) parts suggestions

Posted on 2017-05-31, 17:59

by

by Deksor

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I used PXE booting. My network cards have a boot rom that allow them to boot from the network. The raspberry pi has a few floppy images that I made myself with DOS 6.22 and 7.1 that can connect to the share. Next on the share I unpacked the ISO image of windows 98SE and all I need to do next is to …

---

Re: Pentium III (440bx) parts suggestions

Posted on 2017-05-31, 17:05

by

by Deksor

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I'm looking around for yamaha YM7x4 cards but they seem to all be very expensive or overseas. I guess these cards didn't have much of a run in North America? Strange because I clearly remember that being integrated on higher end boards circa late 90s - 00. Networking card is coming in the mail.. In …

---