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Re: FIC 486-PIO3 mobo - why's it so slow?

Posted on 2011-03-12, 11:48

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

is there any chance you could do a "file comparison" on your working BIOS, with the BIOS available on the internet please? Also, looking at your collection of flash utilities, which one would you recommend I use for the FIC 486-PIO3 mobo? I have no clue, which utility to use in this case. As …

Re: Fastest PCI graphics card in a 486

Posted on 2011-03-11, 21:00

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

This is not my picture, so I don't know. I will grub my junk container, maybe the stick is still there... Edit: Found it !

Re: FIC 486-PIO3 mobo - why's it so slow?

Posted on 2011-03-11, 20:29

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

As promised, here are my collected flash utilities

Re: Fastest PCI graphics card in a 486

Posted on 2011-03-11, 13:59

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

To me they look not like fake. I could never test it. Once I had a M919 without the stick... i sold the board. Later I got a cache stick, but I no longer had a board... so I discarded the stick 😢

Re: Fastest PCI graphics card in a 486

Posted on 2011-03-11, 13:41

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

That is how they look... on the backside of the lower one it reads 'Elpina'.

Re: FIC 486-PIO3 mobo - why's it so slow?

Posted on 2011-03-10, 23:21

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes I have this mobo. I will post a zip-archive of the tools tomorrow.

Re: FIC 486-PIO3 mobo - why's it so slow?

Posted on 2011-03-10, 23:01

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I collected several versions of Award and AMI Flashtools. The oldest are from ~1994. Often it is necessary to try some versions until you find one that is able to flash the ROM of a particular board.

Re: FIC 486-PIO3 mobo - why's it so slow?

Posted on 2011-03-10, 22:37

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I never used those option switched... I flashed dozens of 486 mainboards and never had any problems. Either the ROM is programmed in the right way or the flash tool isn't doing anything at all.

Re: FIC 486-PIO3 mobo - why's it so slow?

Posted on 2011-03-10, 22:23

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I think you have to enter the name of the new bios file . Is the Jumper set correctly ? Flash BIOS type select Intel 28F00BX-T1 J1 1 + 2 Flash BIOS type select SST 29EE010 J1 2 + 3

Re: FIC 486-PIO3 mobo - why's it so slow?

Posted on 2011-03-10, 12:54

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I remember that I experienced some speed issues with the bios version you are using. There is a more recent one dated 04/01/96... The chipset generally seems not to perform well at bus speeds higher than 33 MHz though.

Re: Mau1wurf1977's first 486 PC - Lot's of pics - Tell me what I can do with it

Posted on 2011-03-09, 21:44

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

DonutKing wrote: anyway, it really seems to be that your board only supports 5V CPU's; but its not really a big deal as there are ways around that 😀 You can clearly see the voltage regulator onboard. It is possible, that the thing supports automatic voltage detection as most of the Asus 486 mb's do …

Re: Mau1wurf1977's first 486 PC - Lot's of pics - Tell me what I can do with it

Posted on 2011-03-09, 13:03

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Mau1wurf1977 wrote: And another curious jumper: W (with?) 1435 W/O (without?) 1435 Maybe you can disable the PCI bus because 1435 is the name of the VLB->PCI bus bridge device ? Try upgrading video memory to 2 MB . The Mach32 can do 1024*768 @ 65k colors with 2 MB.

Re: UMC chipset PCI 486 mobo. AMD P90 CPU options?

Posted on 2011-01-26, 18:23

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Some 386 and 486 board manuals mention the cacheable range. From what I have read so far, i would say there is a rule: 32kb 8MB 64kb 16MB 128kB 32MB 256kb 64MB 512kb 128MB 1024kB 256MB These values are for write-through operation. In write-back mode the cacheable range is reduced by half. I don't …

Re: UMC chipset PCI 486 mobo. AMD P90 CPU options?

Posted on 2011-01-06, 22:56

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I get 106.7 in 3DBench 1.0c, and 2134/1260 in Doom timedemo demo3. Quake won't complete its timedemo demo1 test because of instability. Marvelous result! I think that this board should be better than HOT-433 because of its 2/3 FSB-PCI divider. I can chose only between 1:1 and 1:2 on HOT-433 (PCI …

Re: 486 mobo + 586 chip

Posted on 2010-12-01, 15:35

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Try the P24D jumper setup for iDX4-WB

Re: 486 mobo + 586 chip

Posted on 2010-11-30, 19:22

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

retro games 100 wrote: The only problem with this idea is that I cannot see a documented option to set the AMD 5x86 P75 chip to a lower multi of 3x. Am5x86 can not be set to lower multi than 3x I think the 2x60 setting is only possible with a DX4-120 chip.

Re: Test:486 undocumented jumper settings

Posted on 2010-11-30, 19:17

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Those jumpers are not only for voltage setup. Most of these adapters use one for L1 WB/WT setting, one for multi selection (3x or 2x/4x), and one for switching between 3,3 V and 3,45 V

Re: Test:486 undocumented jumper settings

Posted on 2010-11-30, 15:12

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The board autimatically detects if a 3,3V or 5V CPU is installed. I'm not very familiar with such things, but to give 5V to a 3.3V CPU requires shorting some pins at the voltage regulator. I think JP4 and JP5 were intended for manual voltage setting. 'Unfortunately they were replaced with a …

Re: Test:486 undocumented jumper settings

Posted on 2010-11-30, 14:51

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

3.6V is insufficient. From my experiences I can say that some Am5x86 need at least 4V to run at 180 MHz. Many of them won't do this speed even if voltage is increased to 5V !

Re: Test:486 undocumented jumper settings

Posted on 2010-11-30, 13:51

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Are you trying to run the thing at 4x 48 MHz ? First you should make sure, that the board runs with this 48 MHz / 3x multiplier at 144 MHz without problems. Use an ISA graphics card, they are less sensitive to clocking experiments.

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