Re: question regarding MFM and RLL

Posted on 2024-04-04, 17:14

by

by danijelm

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

While testing the drive, I turned off the bios on the controller. I set the CHS parameters in the bios of the motherboard. I don't know how to access the controller bios. It should be on C800h, but when I go to that address in debug, nothing happens.What is the purpose of the bios on the controller …

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Re: question regarding MFM and RLL

Posted on 2024-04-04, 06:58

by

by danijelm

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Many thanks to everyone for the answers. In the end I gave up. I found 2 capacitors on the controller that were bad. I changed them but the same thing happens. Still the disk has BS. when I format it, scandisk runs without problems, but as soon as something is written to the disk, a bunch of BS is …

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question regarding MFM and RLL

Posted on 2024-04-03, 13:12

by

by danijelm

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I am trying to put together a NEC D5146H 40MB MFM hard drive & NCL 5275 controller. https://stason.org/TULARC/pc/hard-disk-floppy-controllers/M-O/NCL-AMERICA-Two-ST506-412-RLL-drives-NCL-5275-NCL.html https://stason.org/TULARC/pc/hard-drives-hdd/nec/D5146H-40MB-5-25-HH-MFM-ST506.html can this …

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Re: Unknown part Inside a Desktop

Posted on 2024-03-12, 12:39

by

by danijelm

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

To me this looks like a smart card reader. Many models of Siemens-Nixdorf had a smart card reader, but from these pictures Ican't see the front cover of the computer, so I can't be sure

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Re: ASUS P3B-F Rev. 1.0.4 won‘t boot black screen

Posted on 2024-01-16, 11:59

by

by danijelm

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

your picture, it looks like a blown line here 😀

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Re: Intel Or840 ps2 not registering

Posted on 2024-01-09, 12:51

by

by danijelm

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi, did you maybe connect the mouse and keyboard upside down? bottom ps2 port is for mouse and top for keyboard on this mainboard.

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Re: Documentation for the Powerleap Neo-S370

Posted on 2023-07-03, 08:25

by

by danijelm

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

1 minute on google..... http://rosperos.com/konwert/NeoS370.pdf

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Re: PIII 450MHz + Voodoo 2 12mb seems balanced. But I've just found Geforce 2 MX 400 64MB

Posted on 2023-06-12, 09:29

by

by danijelm

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I tried this combination a few years ago. All CPUs work at 4.5 x100 = 450 mhz. The table shows the results of Quake 1 in software V2 and GF mode. Intel cpus at 450mhz test

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Re: IBM 8513 issue: power up -> zap -> power down -> repeat

Posted on 2022-12-16, 14:30

by

by danijelm

in Marvin \ Video

in Marvin \ Video

99% Flyback transformer is bad. it used to be fixed as standard. does anyone do that today...

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Re: Voodoo 1 Missing transparency in POD

Posted on 2022-05-10, 19:21

by

by danijelm

in Marvin \ Video

in Marvin \ Video

danijelm wrote on 2022-05-10, 06:32: Hi check the legs on the TMU chip down right at number 52. i think they are damaged or connected Look here 😀

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Re: Voodoo 1 Missing transparency in POD

Posted on 2022-05-10, 06:32

by

by danijelm

in Marvin \ Video

in Marvin \ Video

Hi check the legs on the TMU chip down right at number 52. i think they are damaged or connected

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Re: Adding 256k cache to 486

Posted on 2020-10-31, 17:46

by

by danijelm

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Filosofia wrote on 2020-10-31, 17:26: 20201030_162835.jpg Polulated with 8 chips but I only have one tag ram left. Put it on one of the three available slots. Does not work. What can I do? Left side, second chip from below 1 pin is not in socket. You put it wrong!!!

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Re: Shuttle HOT-613 (Single vs Dual - Pentium Pro)

Posted on 2020-01-31, 10:03

by

by danijelm

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I think there is a communication problem between the APIC and SB82371SB chip. download datasheet for SB82371SB & 82093aa. on SB82371SB datasheet you will find signals for use external or internal APIC. On datasheet of SB82371SB pin 36 may go to presoldered jumper on board... you need to check all …

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Re: Shuttle HOT-613 (Single vs Dual - Pentium Pro)

Posted on 2020-01-22, 13:29

by

by danijelm

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Just for information you will need to get APIC ic. the empty space for it is above the BIOS chip For pentium 1 chip is Intel82039AA I don't know if the P pro and P2 use same Apic Find it on your donor Compaq server add-in CPU card. Good Luck

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Re: Adding a Fan to the Voodoo 3000? Powered by the card?

Posted on 2019-11-14, 17:42

by

by danijelm

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

from wikipedia AGP port pinout https://en.wikipedia.org/wiki/Accelerated_Gra … onnector_pinout A1=+12V B2, B3=+5V A5, B5= Ground solder there.... 😀

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Re: HELP! - Dead Intel VS440FX motherboard with BIOS EEPROM overheating

Posted on 2019-08-16, 13:49

by

by danijelm

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

SVAKA ČAST! The closest literal translation in English would be every honor. It's used as an exclamation when congratulating someone or expressing amazement over someone's accomplishments. 😀

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Re: HP Vectra VL2 4/66 Hard Drive Access "Stuck" Issue

Posted on 2019-02-10, 15:41

by

by danijelm

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Maybe dx50 is your problem. 50 Mhz fsb is problematic.

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Re: Should I use a Quantum Bigfoot? (If not, what else?)

Posted on 2018-11-02, 15:25

by

by danijelm

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Back in my highscool days we just to say bigfoot=bigs**t 😀

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Only one can stay....

Posted on 2018-08-08, 07:01

by

by danijelm

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Only one can stay I need to clean my room because junior is here. My wife ultimatum is that only one PC can be in house :angry: :blush: My plan is to build multy purpose pc for old games most for win98. parts awalible are: MBO ASUS p3bf, ASUS p3C-S, Abit ST6. CPU is from 233 slot 1 to P3S 1.26Ghz …

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Re: Pentium 3 Xeon slot 1 mod?

Posted on 2018-07-23, 14:29

by

by danijelm

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I was thinking about this before some time, but i find some problems in pinout mismatch. Here's table with signals slot1 and slot2. Maybe someone have idea is this possible.

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