Re: standard 486 cache/ram timing for 40/50/60 fsb?

Posted on 2012-11-29, 11:58

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

assume if you have -10 cache and -50 or -60 dram, what are standard timing setting for these fsb? for example, if 40 and 50 fsb uses same timing setting, 50*3 would be faster than 40*4. but if you must use a slower timing for 50fsb, then it should be better to stay with 40*4. It often depends on …

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Re: Pushing a 486 beyond 200MHz - achievable?

Posted on 2012-11-27, 23:30

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It is too difficult to find an AMD X5 that is stable at 200 MHz. I've stopped looking for these magic chips. The only 486 chip I've seen relatively stable at 66 Mhz x 2 was an IBM 5x86c. Maybe there is some pin modification you can do to get the X2 into 2x mode? You can also try using an AM486DX4- …

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Re: Best Fanless AGP/PCI Graphics Card

Posted on 2012-11-27, 15:28

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by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The guide found here provides a method to determine if the memory interface an a graphic card is 64, 128, or 256 bit. http://www.playtool.com/pages/vramwidth/width.html The objective is not to get suckered into those low-cost 64-bit cards. Usually such budget cards don't publish their memory bus …

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Re: fastest chipset with native isa support?

Posted on 2012-11-26, 11:38

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by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

sliderider wrote: How about an ISA adapter that plugs into a USB port? Price - in US Dollars: $149 A real bargain for $5 worth of components!

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Re: Battery replacement for old 386 PC

Posted on 2012-11-26, 11:02

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

You might want to check for continuity using a multi-meter on some of those questionable traces. I found that sometimes those blue acid-eaten traces are eaten down to the bottom of the trace (no copper remaining), while at others, there was still some copper remaining. I cleaned up my blue bulge …

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Re: Help with SiS 496/497 Tomato 4DPS 486 motherboard

Posted on 2012-11-26, 10:38

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by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The PVI-486SP3 board I have works fine with four ISSI 128kx8 pieces. If you have more than 4 pieces, you could try to single out the bad piece. What were your symptoms of fairure? I've acquired 128k8 chips from two different sources in the past. One shipment was 15 ns, the other 10 ns. The 10 ns …

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Re: Help with SiS 496/497 Tomato 4DPS 486 motherboard

Posted on 2012-11-26, 00:05

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I found that increasing the CPU voltage helped somehwat with the stability of the system at 40 MHz and 512KB of cache, however Windows would eventually crash. I routinely run an Intel DX4 at 120 MHz and the AMD X5 at 160 MHz, both wouldn't be stable without raising the CPU voltage to 3.6V. The iDX4 …

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Re: Calling on all CPU's for the Ultimate 686 Benchmark Comparison

Posted on 2012-11-25, 23:54

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by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Well, the Cascades PIII Xeon did have 100 MHz FSB as well as 1 MB and 2 MB cache options, perhaps not on 600 MHz unit though. So if there existed a 1 MB or 2 MB PIII Xeon-800 at 6x133, we could run it at 100x6 just to top up the 600 MHz benchmarks.

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Re: Calling on all CPU's for the Ultimate 686 Benchmark Comparison

Posted on 2012-11-25, 13:00

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by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

luckybob, thanks, I have added your results to the massive spreadsheet file. I have now included a list on the 1st page of this thread detailing all of which CPU configurations have been tested. 177 to date. Are there any post-486 CPU's less than 601 MHz which are missing (and of benching interest)? …

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Re: Help with SiS 496/497 Tomato 4DPS 486 motherboard

Posted on 2012-11-25, 02:47

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I am assuming you have 8 pieces of 32Kx8, not 4 pieces. Double-banked cache seems to tolerate faster settings. Do you have 4 pieces of 128Kx8 for 512KB cache to test? I found that increasing the CPU voltage helped somehwat with the stability of the system at 40 MHz and 512KB of cache, however …

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Re: Help with SiS 496/497 Tomato 4DPS 486 motherboard

Posted on 2012-11-24, 22:51

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Can anyone else with a Zida Tomato 4DPS motherboard see if the maximum cachechk memory read speed is 39.4 MB/s when the cache is set to 3-1-2 and everything else in the BIOS's chipset settings are optimised? My board is an Asus PVI-486SP3, but it might interest you that it behaves in the exact same …

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Re: Help with SiS 496/497 Tomato 4DPS 486 motherboard

Posted on 2012-11-23, 23:22

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

That is the conclusion I came up with, the SiS chipset just can't handle the 40 MHz speed on the fastest memory/cache settings [edit, when using single-banked 512K cache].

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Re: ATI RAGE 128 GL (PCI) and 128 PRO (AGP) BIOS

Posted on 2012-11-22, 09:29

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by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Were Rage 128 GL PCI cards even made for PC's? They all seem to be for Macs.

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Re: The Ultimate Multi-Boot Windows Benching Machine

Posted on 2012-11-21, 17:06

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by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

All 4 OS's now boot from the single XP boot loader. This is the disk configuration, NT4, 4 GB, NTFS (installed second; must start as FAT and convert to NTFS later) W2K, 8 GB, NTFS (installed third) WinXP, 12 GB, NTFS (installed last) Win98SE, 8 GB, FAT32 (installed first, then shifted right into …

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Re: The Ultimate Multi-Boot Windows Benching Machine

Posted on 2012-11-21, 13:58

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by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

@SquallStrife It worked! Your help was most appreciated. It saved me quite a bit of searching and reading. I can now boot to Win98, NT4, and W2K using the default W2K bootloader and the partition sizes I wanted. I used dd-0.5.zip, and for my configuration, the dd command used was: dd if=\\?\Device\ …

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Re: Modern graphics on a 486

Posted on 2012-11-20, 23:38

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by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes i 've used theses cards on 2 motherboards: Abit PB4 et MSI 4144 SiS 496/497 Chipsets I find these the most interesting. Could you go into more detail on exactly which card maker/model and which driver versions you tried? Often you need to try very old driver versions to get a card working on a …

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Re: The Ultimate Multi-Boot Windows Benching Machine

Posted on 2012-11-20, 22:34

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by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

What utility do you use to capture an image of the Win98 boot sector?

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Re: The Ultimate Multi-Boot Windows Benching Machine

Posted on 2012-11-20, 14:49

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by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Based on my tests, it seems like the W2K partition when formatted as NTFS needs to come after the NT4 partition to beat the 8 GB boundary. Win98SE, which begins at the 12 GB boundary, still loads fine when set active. The system is now setup in this sequence on the HDD: NT4, 4 GB, NTFS (installed …

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Re: The Ultimate Multi-Boot Windows Benching Machine

Posted on 2012-11-20, 13:11

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I am making some progress on this. It has been a tiring journey into Microsoft Widows. So far, I have this working, and in this order/layout on the HDD: NT4, 4 GB, NTFS (start out as FAT, convert to NTFS later on in W2K) Win98SE, 8 GB, FAT32 (installed first) W2K, 8 GB, FAT32 XP (haven't tried yet) …

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Re: Calling on all CPU's for the Ultimate 686 Benchmark Comparison

Posted on 2012-11-20, 02:48

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Neon_WA wrote: Also I do have P version Nexgens & both VESA & PCI boards.. but no PF Nexgens Has there been any progress on this?

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