Re: Strange Floppy Disk behaviour 486

Posted on 2021-05-30, 18:50

by

by CoffeeOne

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Have you done the initial EISA setup for this mainboard using the EISA utility, installed the .cfg / .ovl files for this mainboard? Maybe there is some old configuration still stored in the DALLAS NVRAM. Some mainbords demand even regular ISA cards to be configured with the EISA utility. After …

---

Re: Give me good system idea's

Posted on 2021-05-30, 15:55

by

by CoffeeOne

in Marvin \ System Specs

in Marvin \ System Specs

..... Motherboard List Socket 3 Board unknown model, 6 ISA and 1 PCI slot ....... I am really curious about the first board on your list. Really? 6 ISA and 1 PCI slot? What 486 board is that??? I don't think such a board exists.

---

Re: Digital Venturis 466 + AMD 486 DX2-66V16BGC

Posted on 2021-05-30, 15:28

by

by CoffeeOne

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Here is the picture with jumper settings for AMD DX2, but no POST with that setting. BIOS is 2.04. :D :D :D On the right side of the photo there is a 5volts Intel DX2/66 cpu. Why don't you use that one? EDIT: Ok, it might be an DX2/50 only, so for 25MHz bus. But with a good cooler, it will likely …

---

Re: Which RAM for my IBM 300GL 6282 PC?

Posted on 2021-05-29, 22:44

by

by CoffeeOne

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

No. As I wrote, likelyhood is higher that it works, when you find double sided modules (with 16 chips on each module). EDIT: Is the working module (the 32MB one) double sided? Double sided means that is has chips on both sides. If it is single sided, then you should try to find double sided 64MB …

---

Re: Digital Venturis 466 + AMD 486 DX2-66V16BGC

Posted on 2021-05-29, 17:15

by

by CoffeeOne

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

http://www.win3x.org/uh19/motherboard/show/1819 we would like a photo of the motherboard :) Here is the picture with jumper settings for AMD DX2, but no POST with that setting. BIOS is 2.04. :D :D :D On the right side of the photo there is a 5volts Intel DX2/66 cpu. Why don't you use that one? EDIT …

---

Re: Which RAM for my IBM 300GL 6282 PC?

Posted on 2021-05-29, 17:04

by

by CoffeeOne

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Get 2 double sided modules with 8 chips on each side, for 2 times 64MB = 128MB

---

Re: Intel DX4-100 write-back (&EW) won't post Edit: Probably a fake chip

Posted on 2020-08-04, 20:46

by

by CoffeeOne

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Just got a NOS DX4-100 chip but can't get it to post. Anything odd about it or did I just get a bad chip? Tried 3.0V-3.5V, nothing. System boots right up with the old DX4-100 &E chip. System a IBM Valuepoint 466DX2/Dp. Do some systems not work with the write-back cache (&EW)? The black bottom looks …

---

Re: Intel DX4-100 write-back (&EW) won't post Edit: Probably a fake chip

Posted on 2020-07-31, 16:07

by

by CoffeeOne

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Just got a NOS DX4-100 chip but can't get it to post. Anything odd about it or did I just get a bad chip? Tried 3.0V-3.5V, nothing. System boots right up with the old DX4-100 &E chip. System a IBM Valuepoint 466DX2/Dp. Do some systems not work with the write-back cache (&EW)? The black bottom looks …

---

Re: Bought these (retro) hardware today

Posted on 2020-06-20, 19:04

by

by CoffeeOne

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

LewisRaz wrote on 2020-06-20, 17:32: Sellers pic. Not clear but looks like I have myself a nice fake cache board. PC Chips M507 I never heard of socket 7 pentium fake cache boards.

---

Re: 486 Motherboard does not POST at all.

Posted on 2020-06-17, 18:14

by

by CoffeeOne

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Cut off the battery. I read that a bad battery can keep the motherboard from posting. Those barrel batteries should be replace asap anyways. When it starts to leak and it will the acid will destroy the motherboard. Best to replace with an inexpensive coin battery. I'm reticent to remove the battery …

---

Re: Bought these (retro) hardware today

Posted on 2020-05-23, 08:44

by

by CoffeeOne

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Bought a motheboard based on rather uncommon Socket 5 chipset - VLSI SuperCore. Soon to be added to my Early Pentium Chipsets survey. As soon as I figure out the power connector pinout. https://dependency-injection.com/wp-content/uploads/2020/05/DSC_7302-scaled.jpeg Nice! You will have more …

---

Re: Expanding Cache to 512KB on a Socket 3 Shuttle 419

Posted on 2020-05-22, 18:46

by

by CoffeeOne

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Disclaimer: I know this this is a total vanity project. It's not worth the time or money, but back in the day, I always wanted to make out the config, but it was often too expensive or too risky, because I wouldn't want to melt down by primary computer. But when I could do stuff like get 16MB of …

---

Re: Best DOS video card for 1995 ?

Posted on 2020-05-22, 15:31

by

by CoffeeOne

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The ViRGE did not exist in 1995. ATi Mach64 I'd say. btw, no one had 128 MB PC133 RAM in 1995. That board is way too new for a 1995 build. True! Also 128MB slows down the system, because it exceeds the cachable are of the mainboard, which is 64MB. But it's ok, if you intend to slow it down. I do …

---

Re: Best DOS video card for 1995 ?

Posted on 2020-05-22, 11:43

by

by CoffeeOne

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

derSammler wrote on 2020-05-22, 11:39: The ViRGE did not exist in 1995. ATi Mach64 I'd say. btw, no one had 128 MB PC133 RAM in 1995. That board is way too new for a 1995 build. True! Also 128MB slows down the system, because it exceeds the cachable are of the mainboard, which is 64MB. But it's ok, …

---

Re: Help troubleshooting MSI MS-6309 Lite won't boot.

Posted on 2020-05-17, 17:55

by

by CoffeeOne

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The original board looked beyond repair or at least beyond what I'm willing to do in terms of repairs (caps had taken to eating the board). The purchase was a little impulsive, should probably have done some more research. The 'new' one had been tested, but without attempting to boot whoever tested …

---

Re: Help troubleshooting MSI MS-6309 Lite won't boot.

Posted on 2020-05-17, 15:02

by

by CoffeeOne

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I'm wondering if some capacitors on the board may be on their way out and are causing issues with voltage regulation? Yes, these boards were notorious for capacitor problems, even when nearly new. I worked at the Packard Bell helpdesk and witnessed the start of the capacitor plague, with these …

---

Re: Strange problem with 486 motherboard

Posted on 2020-05-15, 23:20

by

by CoffeeOne

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have a 486 ISA board that finally doesn't have acid damage but it's giving me a hard time. It came without a BIOS chip so I programmed a Sis401-2 version and it started up... but has a problem with the video adapter. It starts with 1 long 3 short beeps indicating a bad video card but it displays …

---

Re: Strange problem with 486 motherboard

Posted on 2020-05-15, 23:05

by

by CoffeeOne

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have a 486 ISA board that finally doesn't have acid damage but it's giving me a hard time. It came without a BIOS chip so I programmed a Sis401-2 version and it started up... but has a problem with the video adapter. It starts with 1 long 3 short beeps indicating a bad video card but it displays …

---

Re: Questions about upgrading SS7 CPU

Posted on 2020-05-10, 09:40

by

by CoffeeOne

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

brian105 wrote on 2020-05-10, 03:57: How high can I raise the voltage when overclocking? I tried 2.5V and it throws VXD errors at me in Windows with a 5.0 * 100 config. The K6-2 450 AHX most likely can't be overclocked. It's kind of factory overclocked already with the 2.4V, because normally the K6 …

---

Re: Help me identify a 486 board

Posted on 2020-05-07, 20:15

by

by CoffeeOne

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have been going over basically every sis 496/497 chipset board I could find, haven't found a matching layout yet. It has quite a distinctive layout with that separate memory slot and the additional 2 IDE connectors (even though they don't have pins). There is also an additional floppy connector …

---