Re: Asus P/I-P55SP4 cache not detected and stuck at 8MB no matter pair of SIMMs I use.

Posted on 2022-12-12, 18:42

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Horun wrote on 2022-12-11, 02:36: Could be dead CMOS battery but most likely some other issue..seems there have been a lot of issues with P55SP4 and other boards using the SIS 5511, 12 and 13 in last few months. Wow, I didn't see this come up about SiS 5511 series chipset issues. Such as? Cheers,

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Re: "Fake AGP" slots?

Posted on 2022-12-11, 00:17

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

No again. Does not have to do with PCIe. x4 really bottlenecks any PCIe GPUs that are mid end to high end. If the game is not effected by fewer lanes then game is not using all the GPU period. Back in the day, people was doing fine with 256MB, mid and high end GPUs and 8800 GTS 320MB is sightly more …

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Asus P/I-P55SP4 cache not detected and stuck at 8MB no matter pair of SIMMs I use.

Posted on 2022-12-11, 00:01

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Could this be caused by dead CMOS battery? Or something fatal with a chip somewhere? Tried async both 256K (original) then 512K chips. This is a board that use three SiS chipset 5511, 12 and 13. The pentium 133 and 100 tried both. Cheers,

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Re: What retro activity did you get up to today?

Posted on 2022-12-10, 21:39

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Finally got around to test boards and one of them is SiS 551x based pentium socket 5 has corrupted bios firmware, saying bios checksum is bad. Need to find time to make new fresh firmware for the P/I-P55SP4. Update: Board is not doing too well after refreshing the bios, keep saying 8MB no matter …

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Re: Socket-8 Gaming Build

Posted on 2022-12-10, 18:44

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by pentiumspeed

in Marvin \ System Specs

in Marvin \ System Specs

Just as a matter of interest, the RAID card came fitted with a 64MB 168-pin PC100 ECC SIMM. https://i.imgur.com/mIt49XC.jpg As a test I fitted a 128MB non-ECC 168-pin SIMM to see if there would be any performance difference, which there wasn't , so I've reverted back to the 64MB of ECC memory on …

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Re: Repairing a specific LCD: Abit Guru Panel GP-02

Posted on 2022-12-10, 17:45

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

EL requires high voltage dc-dc converter to light up and is kind of blue-green glow. Yours does not have this feature, meaning it has simple LED backlight behind the LCD panel. But you have big problem; need to de solder the panel from the circuit board to check and repair the backlight. Cheers,

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Re: "Fake AGP" slots?

Posted on 2022-12-10, 17:31

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

PS: Power is doing work in energy rate per second called watts is expressed in one unit. Like you have a 200KW engine in your car while you have 200W video card at max utilization. And remember that watts changes all the time, when you are at cruise, around 50KW used, same idea with GPU lightly …

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Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!

Posted on 2022-12-09, 23:04

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I play around too to find out, in art of experimentations. Cheers,

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Re: What retro activity did you get up to today?

Posted on 2022-12-09, 22:42

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Not quite retro, replaced the broken grounded kettle socket on the cheap medium sized board preheater, socket was flopping around in the air due to broken thin plastic ears with quality one made of metal and thick plastic. Had to dremel the opening bit wider. Routinely used for the game console …

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Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!

Posted on 2022-12-07, 23:53

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Oh, Do you have junk PCB created by same company, can you dig away the via (the one with no hole) to see how big via is? The true via has a drilled hole bit larger and plated like old boards have? I have a feelling these so called vias without the "hole" is tiny one? Cheers,

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Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!

Posted on 2022-12-06, 16:14

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

CPU *is* noisy means AC around the DC voltage and yes this will show on LDO's out pin too. Less tantalums around three is fine, but needs more MLCC on the pads. Silkscreen is labels to denote the locations or labels for components. The insulating mask is what covers the copper leaving pads and …

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Re: Built my father a tiny XP PC

Posted on 2022-12-06, 01:03

by

by pentiumspeed

in Marvin \ System Specs

in Marvin \ System Specs

Geforce2 GTS and Pro, and Geforce4 MX440 all share similar power usage and can fit in that shuttle case and is much better compatibility. Or HD5650, which is bit better. Cheers,

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Re: Building a WinXP PC

Posted on 2022-12-06, 00:54

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes, I have experience working with capturing video as a flirtation for a short time. Back in the day, none of consumer capture cards even a so called VCR with capture built in showed quality. They looked bad. That VCR was summarily returned for money back and this was from USA. Even I had card best …

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Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!

Posted on 2022-12-06, 00:46

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Much better. Now you know how complicated this is now in designing a successful PCB design that works against budget imposed by not very knowledgeable business people. Cheers,

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Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!

Posted on 2022-12-05, 20:40

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

https://www.researchgate.net/figure/Comparison-of-ground-and-power-plane-connection-methods-for-reflow-soldered-SMD-components_fig4_3364576 https://electronics.stackexchange.com/questions/458586/is-one-big-via-better-than-multiple-small-vias-when-changing-power-traces-and-gr https://www.intel.sg/ …

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Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!

Posted on 2022-12-05, 20:30

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I can see the problem. Not enough vias for power plane and ground. I'm talking about isolated vias not other than for pins as vias (not enough current handling), and relying on power plane for rest. The examples of vias next to pads for capacitors: http://www.sigcon.com/Pubs/news/6_09.htm The ideal …

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Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!

Posted on 2022-12-05, 20:03

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I didn't say lower. I meant lower ESR is better. MLCC capacitors have this and can output higher current spikes which is what you did. Tantalums is good for bulk capacitance but needs so many to get desired lower ESR goal which is counter productive. Instead, use fewer tantalums and much more in …

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Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!

Posted on 2022-12-05, 18:59

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

That is correct way to deal with! I said MLCC capacitors all along, But why is the 8 capacitors not populated in the center area, preferably large MLCC capacitors? In newer designs and in all of the consoles including xbox one, and X and xbox series, PS4 and PS5 uses heavy use of large MLCC …

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Re: Interposer for mobile Pentium MMX Tillamook

Posted on 2022-12-05, 18:53

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

These BGA is intended for embedded use but it is really regular pentium mmx without SMP pins and will work on motherboards. Same with TCP as you found. Cheers,

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Re: "Fake AGP" slots?

Posted on 2022-12-05, 00:32

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

This depends on how 3D is processed on either CPU and GPU or both changes the performance overall, not surprising. Secondly, Not all GPUs supports less than x16, some newer low to mid end start at x8. There are true x1 GPU cards out there but it is for low end use. Cheers,

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