Re: Another 486 build.... with EISA!

Posted on 2013-06-17, 22:55

by

by feipoa

in Marvin \ System Specs

in Marvin \ System Specs

I'm running into some odd problems with memory speed on this board. For some reason, memory throughput numbers seem to drop a bit when L2 writeback cache is enabled in the BIOS. Below is my Speedsys and Cachechk results. Don't ask me why speedsys doesn't detect any L2 cache when the BIOS Memory …

---

Re: Dual PIII-S Tualatin 1.4 GHz Success Stories

Posted on 2013-06-17, 22:49

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

flupke11, what are your best AGP graphics cards?

---

Re: Dual PIII-S Tualatin 1.4 GHz Success Stories

Posted on 2013-06-17, 04:52

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

flupke11's board has AGP. luckybob, you don't have a 6200 PCI card? The closest I have to a 9200 is the 9500 Pro. For PCI, the best I have is a Quadro FX600, Geforce 6200 w/256 and 512 MB, Matrox G450, Matrox Parhelia PCI-X 256, GeForce2-something, or a Voodoo 3 3000. Which OS? It seems kinda silly …

---

Re: Dual PIII-S Tualatin 1.4 GHz Success Stories

Posted on 2013-06-17, 03:39

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Off the top of my head, the best AGP graphics cards I have are: NVIDIA GeForce 6600 GT - 128 MB NVIDIA Quadro FX1100 - 256 MB ? NVIDIA GeForce 6200 - 256 MB NVIDIA GeForce Ti4400 - 128 MB ? Matrox Parhelia - 128 MB ? ATI Radeon 9500 Pro - 128 MB ? ATI Radeon 8500 DV - 64 MB Voodoo 3 3000 - 16 MB I …

---

Re: scored some hardware

Posted on 2013-06-16, 23:46

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Feipoa, why not just run PRIME95 Blend/SmallFFT for 24 hours instead of having to switch OSes? Of course you are free to try any burn-in approach of your choosing. When dealing with FSB's above 33 MHz on a 486, I found that most stability issues are related to memory and cache speeds, esp. when the …

---

Re: Dual PIII-S Tualatin 1.4 GHz Success Stories

Posted on 2013-06-16, 23:39

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

feiopia, the 440BX was LEGENDARY for being stable at 133mhz. In other news, the he-sl chipset seems to REALLY be the way to go. it seems about average in memory read, but in writing, it curb stomps the rest! If we average the cachechk read/write speeds, the HE-SL gets 613 MB/s, whereas the P3TDDE ( …

---

Re: Dual PIII-S Tualatin 1.4 GHz Success Stories

Posted on 2013-06-16, 12:26

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Interesting work! Is the 440BX stable at 133 MHz? Will it show memory errors after 48 hours of MemTest? Why are the read speed results for your P3TDDE so much slower than mine? Even CL3 memory should be around 730 MB/s.

---

Re: scored some hardware

Posted on 2013-06-16, 07:35

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Leave the voltage at 3.45 V.

---

Re: scored some hardware

Posted on 2013-06-15, 23:57

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Could you remind me which frequency you are using to test the chip at, and which voltage? Try it at 100 MHz, 3x33. You should not need to halve the PCI clock at 3x33 MHz. If you are using 40 MHz (and 1:1), your stability issues are probably due to your cache timings being too fast, or some PCI card …

---

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

Posted on 2013-06-13, 10:08

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

This is somewhat of a different topic from the OP, but I didn't think it warrented a new thread. The question is, has anyone had success getting a POD working in a Zida Tomato 4DPS board?

---

Re: Maddening memory issue (?) with Inspiron 4100 P3-M laptop

Posted on 2013-06-13, 07:29

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I do not think you'll find through-hole tantalum or cermaic capacitors with a high enough capacitance at a reasonable price. From my experience, the higher capacitance caps usually go bad, like in the 200-2000 uF range. I've had tantalum caps catch fire, while electrolytic caps usually bulge and …

---

Re: scored some hardware

Posted on 2013-06-13, 02:46

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Anonymous Coward wrote: So what's the trick in deciphering the markings? I was being deliberately vague. Announcing it [here] will only make them harder to find and more expensive.

---

Re: scored some hardware

Posted on 2013-06-13, 01:07

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The IODATA label indicates it is possibly a 4X chip. How did you come to the conclusion that the chip is 2X/3X? Was it tested in 2X mode? Did I miss one of the posts? From the markings on the bottom of the chip. The IODATA "X4" is probably short for "DX4". What happens if you try write-through mode …

---

Re: scored some hardware

Posted on 2013-06-12, 23:06

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

We could be talking about different things... There's multiple threads on 486 PCI systems at the moment :) I run L2 in write-through mode to increase the cacheable range. I also found write-through cache works more reliably in 512K/1024K double-banked cache configurations.

---

Re: scored some hardware

Posted on 2013-06-12, 21:11

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Ok, that is definately a 2x/3x only Cyrix 5x86-120 chip. Are you using this manual to set your jumpers? Is this the board you have? http://www.elhvb.com/mobokive/Archive/Ecs%20-%20Elitegroup/manual/um8810p.zip I am refering to settting the L2 cache to write-through mode in the BIOS. I can see in the …

---

Re: How many Retro PCs do you got in your house?

Posted on 2013-06-12, 20:17

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Pingaloka, that is one very fine looking piece of vintage machinery you've got there. You are definately not colour blind. One day I should get around to re-whittening my 486 cases.

---

Re: Help me decide Pentium Overdrive 83@100mhz vs Pentium 90

Posted on 2013-06-12, 19:50

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

For the Iwill P54Ti you received, there is a red dot on the BIOS chip, which I assume means it is bad. Try using an EEPROM programmer and reflash the BIOS. I have accidentlly ruined EEPROM BIOSes in the past by forgetting to switch the jumper from the 12V EPROM setting to the 5V EEPROM setting. …

---

Re: scored some hardware

Posted on 2013-06-12, 19:00

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

What happens if you try write-through mode for the L2 cache?

---

Re: Another 486, just for fun.

Posted on 2013-06-12, 11:26

by

by feipoa

in Marvin \ System Specs

in Marvin \ System Specs

I hated those PC tech bastards back then. They were always really smug and pretended they had all the answers and I was just some punk kid annoying them with questions about upgrading my crappy old and no longer supported 2.5 year old 486. I have had similar experiences and was eventually told to …

---

Re: scored some hardware

Posted on 2013-06-12, 07:07

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes, very unusual in my experience. This is the first Cyrix 5x86-120 I've seen with stepping 1, revision 5. Can you show a photo from the bottom side of the chip? Also, from Cyrix 5x86 Register Enhancements Revealed , I noted "to get BTB working on Stepping 1, Revision 3 CPUs, it is necessary to …

---