Re: Problem with serial COM port on Powertech MB532

Posted on 2021-02-01, 08:25

by

by majestyk

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

There are indeed two types of connectors (both use 9 pins): 1. The more regular one 2. The one I call the "Supermicro" type, because Supermicro used it but others as well. There´s no difference at the mainboard connector side, you only have to make sure Pin1 of the cable(red) sits at Pin 1 of the …

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Re: Modern replacement for VIA VT82885N Real Time Clock

Posted on 2021-01-31, 19:37

by

by majestyk

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

A "modern replacement" will be designed different and have another form factor. But there are "old" models still being produced. Comparing the datasheets of the VIA http://www.datasheet.hk/view_download.php?id=1071378&file=0007\vt82885_54247.pdf and the classic DALLAS DS1287 https://pdf1. …

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Re: Anyone Know Why in the Case of My Asus P4C800-E Deluxe, There Are Vcore Limitations in Place in-BIOS?

Posted on 2021-01-31, 16:31

by

by majestyk

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Best chance would be a version before they added the Prescott CPU-IDs.

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Re: Anyone Know Why in the Case of My Asus P4C800-E Deluxe, There Are Vcore Limitations in Place in-BIOS?

Posted on 2021-01-31, 16:22

by

by majestyk

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Did they believe a max. overvolting 0f 0.2V would be sufficient for Prescotts? On the other hand: This was the time, when the "capacitor plague" was raging everywhere. My own ASUS "P4C800 Deluxe" had issues with the caps in the VRM circuits after a few years. Supposed they knew that there was a lot …

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Re: Missing chip on this mobo (386 NEAT sx ?)

Posted on 2021-01-31, 15:54

by

by majestyk

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

See the parrallels with this one? https://www.ebay.com/itm/dtk-PPM-1630C-Intel- … AT/324463315982? Might be a DTK board. The two missing DIL20 chips have probably white stickers with something like "U-XYZ" written on them 🙁

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Re: Anyone Know Why in the Case of My Asus P4C800-E Deluxe, There Are Vcore Limitations in Place in-BIOS?

Posted on 2021-01-31, 15:22

by

by majestyk

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I can think of two reasons for this - assuming ASUS did this intentionally. 1. To protect certain CPUs from being damaged by any Vcore too far out op specs. 2. To protect the Vcore voltage regulators on the ASUS board. Since Prescotts had high power consumptions (> 130W), when Vcore (U) is incresed, …

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Re: Missing chip on this mobo (386 NEAT sx ?)

Posted on 2021-01-31, 10:34

by

by majestyk

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The one between PSU connector and ISA slots is for the keyboard controller, the "Hi and Lo" ones are for the BIOS chips, the brown socket is for NPU (not needed to get the board running) and the lot of 4 x 9 sockets are for RAM. Below there are also 4 additional sockets for SIPP RAM sticks. There …

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Re: Help Needed - SMC WLAN PCMCIA Card Not Detected by Win98SE

Posted on 2021-01-30, 18:58

by

by majestyk

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

If the SMC card is a 32 bit Cardbus card for 3,3V and the PC-Card slot of the Notebook has a 16 bit PC-Card slot with 5V only there can be problems. But in this case, because there are keys at the sockets, it should not be possible to insert it. You could try with a Linux live CD if the combination …

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Re: FIC-PA2010+ UDMA headache

Posted on 2021-01-30, 17:45

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by majestyk

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Being forced to PIO4will cause some additional CPU overhead, but as long as it does not slow down the system too much, why not live with it.

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Re: Dual CPU Socket 5/7 Boards

Posted on 2021-01-30, 08:37

by

by majestyk

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It used to work perfectly when I acquired it about 15 years ago. However, the Dallas Clock battery (date code 1995) will probably be EOL by now. I need to fit in a DIL socket and replace the "DS17487-5" which is still being produced and available. If features 4KB of extended NV-SRAM for EISA …

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Re: AST Power Premium motherboard

Posted on 2021-01-30, 08:12

by

by majestyk

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Does this thing have a backup battery somewhere? Can´t find one onboard, maybe its an external one.

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Re: Dual CPU Socket 5/7 Boards

Posted on 2021-01-29, 22:11

by

by majestyk

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

That´s dual voltage -> Socket 7. There are no 30-pin Sockets, they´re all 72-pin SIMM, but the lower four slots provide a 45° position for the RAM sticks. And you are right about HX! If memory (sic!) serves me right you need a v.3 (or higher) COAST stick for this board. I have a 512KB stick for this …

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Re: FIC-PA2010+ UDMA headache

Posted on 2021-01-29, 20:30

by

by majestyk

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I didn´t install many of those controllers back in the days, but a Promise SATA I (150) should be supported well under Win98.

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Re: FIC-PA2010+ UDMA headache

Posted on 2021-01-29, 19:27

by

by majestyk

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

My system ran Win2K, so that might be a Win98 (98ME?) issue indeed. A PCI-SATA controller running it´s own BIOS might have the best chance to work around this.

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Re: Dual CPU Socket 5/7 Boards

Posted on 2021-01-29, 19:19

by

by majestyk

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Will do, but don´t expect that to happen anytime soon 😉

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Re: Another Blue Lightning 25/50MHz 2168 salvage IBM PS 1000 - Giving up on the SXL?

Posted on 2021-01-29, 19:15

by

by majestyk

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Be careful, when it comes to LPX riser cards, vendors tend to produce their own proprietary pinouts. Compatibility is an exception.

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Re: Definitive list of all socket 5/7/SS7 cpus

Posted on 2021-01-29, 18:47

by

by majestyk

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

My 450Mhz one runs fine at 600Mhz too, but we are looking at official specs here because otherwise they could probably be considered to be the same cpu no matter what the official mhz rating is. I´m quite sure all the chips came from the same production, the same wafers. They got tested for …

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Re: FIC-PA2010+ UDMA headache

Posted on 2021-01-29, 17:12

by

by majestyk

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I had installed this board with a (fast) PATA drive at the onboard port once - no issues at all. So I would suspect your PATA->SATA adaptors are the problem. Depending on the chip they use they might work in another system perfectly but not in this one. To veryfy this there will be no way around …

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Re: Dual CPU Socket 5/7 Boards

Posted on 2021-01-29, 15:00

by

by majestyk

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

This is one of the first Dual S7 boards I got: Filename ASUS_P_E-P55T2P4D.JPG File size 1.96 MiB Views 1750 views In the flesh it´s quite huge.

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Re: Definitive list of all socket 5/7/SS7 cpus

Posted on 2021-01-29, 08:19

by

by majestyk

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Sphere478 wrote on 2021-01-28, 18:59: Baoran wrote on 2021-01-28, 18:51: There are 400Mhz 450Mhz and 500Mhz version of K6-III+ There is no 550Mhz version. That is just overclocking if you run one at 550Mhz Lol. I own one. Yes there is haha Adding those Yep, I own two of them, running 100% stable @ …

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