Re: 486DX PC running really slow. Thoughts?

Posted on 2021-01-18, 23:17

by

by nathanieltolbert

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

So I have the machine running well and it's now running fast, aside from the fact that I cannot seem to identify the l1 cache, which is fine. But I have another issue. My BTC 16x CD-ROM drive won't read all of my cd-roms. Not just burned ones, but it is having problems with my World of Xeen CD-ROMs …

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Re: 486DX PC running really slow. Thoughts?

Posted on 2021-01-18, 23:07

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by nathanieltolbert

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

No, when Intel removed or disabled the onchip FPU.on their 486s. Calling those 486SXs. Celerons are fine as well. They just had less cache than the "Pentiums". That's kind of what I meant. That the SX specifically notes the removal of the FPU feature, like the Celeron which were usually gimped with …

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Re: 486DX PC running really slow. Thoughts?

Posted on 2021-01-18, 20:56

by

by nathanieltolbert

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

So what is the difference between 486 and 486DX? The only difference is the name. So was it a naming nomenclature that they came up with after the fact when they decided to release lower end, cost reduced chips, like the Celerons? I was curious because I couldn't find any information. But I vaguely …

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Re: 486DX PC running really slow. Thoughts?

Posted on 2021-01-18, 19:00

by

by nathanieltolbert

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The TOPBENCH Score is 134 It's solid throughout the iterations.

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Re: 486DX PC running really slow. Thoughts?

Posted on 2021-01-17, 19:32

by

by nathanieltolbert

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yeah, your bios settings appear to be set sorrectly. So you must have the motherboard jumpers set incorrectly. I cannot find any jumpers on the board that indicate any sort of set up for the L1 cache. I have double checked and the CPU type is jumpered to 487/486DX . As far as I can tell from the …

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Re: 486DX PC running really slow. Thoughts?

Posted on 2021-01-17, 19:22

by

by nathanieltolbert

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Oh, so because the DX-33 is not clock doubled, there is no 8KB drop because the cache is running at 33Mhz instead of 66. That makes sense, and I did not think of that. I don't have any other DX-33 CPUs in other systems that I can test against that, but once I think about it, that does make sense. …

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Re: 486DX PC running really slow. Thoughts?

Posted on 2021-01-17, 19:05

by

by nathanieltolbert

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

In bios make sure these are "ENABLED" CPU cache SDRAM Memory Cache Hmmm. I don't seem to have those as options. I am running on an AMIBIOS from 1993 and the only cache options I have are as follows - External Cache Memory - Enabled Internal Cache Memory - Enabled Should I have an option for SDRAM …

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Re: 486DX PC running really slow. Thoughts?

Posted on 2021-01-17, 18:58

by

by nathanieltolbert

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Okay I ran the check cpu program in the benchmark pack and it doesn't identify the CPU as an Intel 486DX-33. It says a 'classic' 486 with no Vendor ID running at 33.5MHz and it says that the L1 cache is enabled and in Write Through mode. I don't know if that has anything to do with the L1 cache not …

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Re: 486DX PC running really slow. Thoughts?

Posted on 2021-01-17, 18:52

by

by nathanieltolbert

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Okay Turbo pins have had a jumper applied. Speed of the system seems similar. However, when testing the speed with Speedsys we now report a speed of 12.4 and within System Information it's a 71.9, so that is better. However, When running Cachechk, we still aren't seeing the L1 cache that the CPU is …

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Re: 486DX PC running really slow. Thoughts?

Posted on 2021-01-17, 18:44

by

by nathanieltolbert

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Let me find a jumper and I will try it and report back.

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Re: 486DX PC running really slow. Thoughts?

Posted on 2021-01-17, 18:44

by

by nathanieltolbert

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Cache Read State is 2-1-1-1 and the Write State is 1 W.S. RAM Write is 1 W.S. as well. AT speed is set to CPU/4, so 8.25MHz? The CPU jumpers are set to the 487 or 486DX setting, and the Speed is set to 33MHz, the VLB slots are set to CLK<=33MHz. When checking with the different programs they all …

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Re: 486DX PC running really slow. Thoughts?

Posted on 2021-01-17, 18:37

by

by nathanieltolbert

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

PC-Boot Up speed is set to fast. And the case has no turbo switch, so nothing is connected. Do I need to bridge something to make it not run in the slower mode? The Techmedia case is pretty simplistic, it has a keylock, Power LED, HD LED, Reset and Speaker connectors.

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486DX PC running really slow. Thoughts?

Posted on 2021-01-17, 17:57

by

by nathanieltolbert

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I think I have isolated the issue, but I am not certain on how to correct. I have a VLB PC that I have set up and it's running strange. It is the Biostar MB1433/50UCV-D Rev1.1 motherboard. I have installed a Diamond Stealth 64 DRAM VLB card, a DTK PTI-227W I/O card, a Sound Blaster Vibra 16S card …

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Re: Having a bit of difficulty with Waverider Platinum 3D card

Posted on 2020-12-31, 08:30

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by nathanieltolbert

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Strange. It did not work. There is no sound in DOS regardless of if I am using Unisound or the default AZTPNP executable. I put the Set Blaster variable and confirmed that it matched the config file for the card. But nothing. In Windows running DOS inside windows I can get Sound blaster sound in …

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Re: Having a bit of difficulty with Waverider Platinum 3D card

Posted on 2020-12-14, 01:09

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by nathanieltolbert

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Interesting. I know very little about this card. I thought it would be a nice card for my friend since it supports full OPL3 in DOS and in Windows sounds like it has an Okay enough Midi Synth Chip. I will try the unisound program and see if that helps.

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Having a bit of difficulty with Waverider Platinum 3D card

Posted on 2020-12-12, 08:05

by

by nathanieltolbert

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Okay, I'm pretty sure it's something that I have done rather than the card. Inside of Windows 98, the card works fine, albeit with some strange, almost interference like noise on digital audio sound. The MPU-401 works properly and sounds nice for the time, and Digital sound works inside of Windows …

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Re: cannot find PC Chips M863G V5.1C board audio drivers

Posted on 2020-08-10, 02:16

by

by nathanieltolbert

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I really can't find a lot of information regarding this integrated sound chip. It was used a lot with the SiS 741GX chipset, and I have found another board other than the PC Chips with the same layout from ASUS; the ASUS K7S41GX. The Audio is labeled as AC97 Codec 5.1CH audio. With very little else …

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Re: cannot find PC Chips M863G V5.1C board audio drivers

Posted on 2020-08-08, 21:22

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by nathanieltolbert

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Interestingly enough. It starts off saying C-Media Device and then the name changes the SiS 7002 PCI audio card. The Chipset for the audio is correctly identified as the C-Media CMI9738 and identifies the proper number of speaker outputs (4 channels) and works properly. However, there was nothing I …

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Re: cannot find PC Chips M863G V5.1C board audio drivers

Posted on 2020-08-07, 17:49

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by nathanieltolbert

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The driver disk did indeed work. I don't know about the video graphics. Everything described it as SiS Mirage, and the drivers identified and installed something called SiS 315. Boy, are the graphics pathetically slow and bad. I didn't really expect much from an integrated graphics processor from …

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Re: cannot find PC Chips M863G V5.1C board audio drivers

Posted on 2020-08-07, 01:17

by

by nathanieltolbert

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Wow! Thank you! I checked archive.org and I didn't find anything. I will see if those drivers work after I get it downloaded and installed. Thank you so much for the help AmiSapphire.

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