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Re: A PCI 486 motherboard: Protech PM486PU-S4

Posted on 2022-01-31, 15:12

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

stamasd wrote on 2022-01-31, 08:17: I don't have windows installed on this machine. And what DOS IDE driver do you have in mind? I don't know of any. Also, the boot failure if a device is attached to the secondary IDE happens regardless of whether the secondary IDE is enabled in the BIOS or not. Ah …

Re: A PCI 486 motherboard: Protech PM486PU-S4

Posted on 2022-01-31, 08:09

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

One more bit of info about the 2nd IDE port not working. When I inspect system resources in DOS with msd.exe, it shows that IRQ14 is assigned to "hard disk controller", but IRQ15 is "reserved" by the BIOS. I assume that's why the 2nd IDE isn't working. I've played with the BIOS, which is kinda …

Re: A pentium 4 with low tdp?

Posted on 2022-01-26, 20:16

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes, but the P4-M or Mobile P4, use lower voltages, if I put them, they wouldn't fry? I don't know how this laptop's voltage detection works It's not only lower voltage (though it's better to look up into a datasheet of a CPU). Once I tried to run P4-M with a desktop motherboard (i865) . A CPU was …

Re: A PCI 486 motherboard: Protech PM486PU-S4

Posted on 2022-01-25, 09:26

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Crap. I think I won't be able to run 3.3V CPUs on this board. I did some tracings and measurements, and I think that despite there being a pad and holes for a VRM, installing the regulator chip will not work. Let me explain why. **** Except that on this board, I cannot see any such bridge. There …

Re: A PCI 486 motherboard: Protech PM486PU-S4

Posted on 2022-01-24, 16:28

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

*** That is the good news. The bad news, the second IDE port is bad. Any drive attached to it is seen by the BIOS autodetection routine, but cannot be booted from. *** Glad to see good news :-) I don't remember exactly but a second IDE channel would work if IRQ 15 was routed to it. Maybe you can …

Re: A PCI 486 motherboard: Protech PM486PU-S4

Posted on 2022-01-22, 15:12

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Well. Have you tried to copy something from a HDD to a floppy on the mainboard? If you manage to copy then IDE controller is OK. IMO, issue could be in mechanics of LBA/CHS or a wrong boot record.

Re: A PCI 486 motherboard: Protech PM486PU-S4

Posted on 2022-01-22, 13:31

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Well, last test for today. I ditched the CF card, and took a 4GB Seagate microdrive. Put that in a CF/IDE adapter and connected it to the primary IDE. Booted from floppy, partitioned the microdrive with a 2GB DOS partition, formatter it and transferred DOS to it. Set the BIOS to boot from C: again, …

Re: PC CHIPS 35 8823-01 mobo

Posted on 2022-01-16, 12:11

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

snufkin wrote on 2022-01-16, 11:57: Unfortunately there are at least three different ways to count pins: Thank you for the clarification and addition.

Re: PC CHIPS 35 8823-01 mobo

Posted on 2022-01-16, 08:08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I counted pins in common way (see example) and GND and NC are in place.

Re: PC CHIPS 35 8823-01 mobo

Posted on 2022-01-16, 08:03

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thank you for reply . I've updated full size board , and made measures for ground pins. Its mismatch pinout you privided me. It depends how to count pins ) Where do you think the pin #2 is ? Really ?Its counting always same way XD Yes, I think so. But you didn't answer. My example: https://ptgmedia …

Re: PC CHIPS 35 8823-01 mobo

Posted on 2022-01-16, 07:49

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

ciornyi wrote on 2022-01-16, 07:43: Thank you for reply . I've updated full size board , and made measures for ground pins. Its mismatch pinout you privided me. It depends how to count pins ) Where do you think the pin #2 is ?

Re: PCChips M575 bios

Posted on 2021-11-14, 17:02

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Welcome. I hope I helped. Good luck!

Re: PCChips M575 bios

Posted on 2021-11-14, 16:31

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Tried installing the driver from v2.3 cd but installer said that it is already installed. Is there any other driver out there? I don't remember exactly the version I used. But (IIRC) there was no any checkbox to activate DMA/UDMA in the device manager. And if the driver installed properly the …

Re: PCChips M575 bios

Posted on 2021-11-14, 16:13

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

When i enable dma under device manager system refuses to boot. Also under bios i only get pio mode and during post it says udma capable but not enabled. Using wd400. Did you install the ALI IDE miniport driver ? P.S. Some links: https://www.elhvb.com/webhq/models/pcchips/m575.htm ftp://ftp.spez. …

Re: PCChips M575 bios

Posted on 2021-11-14, 11:19

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi, worked like a charm, but I am going to miss the old interface. Thank you! EDIT: dma still not working, found some info that txpro has a chipset bug and it will not work, too bad. What exactly do you mean about DMA ? I used this model of motherboard. Back then when I installed the IDE miniport …

Re: Modding support for AMD K6-2 into a Socket 5 Award BIOS?

Posted on 2021-10-27, 19:01

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Are the requirements for K6-2 initialization code documented publicly? For instance, I guess MTRRs would need to be setup, which don't exist on original Pentiums. If people are gung ho about modifying BIOSs to add something like this, then finding/creating a stock piece of code that performs this …

Re: Modding support for AMD K6-2 into a Socket 5 Award BIOS?

Posted on 2021-10-24, 19:28

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

jheronimus wrote on 2021-10-24, 14:34: Modbin works, but I can't see how I can add any features using it — it primarily just allows me to change existing options. Are there any other tools I could try? IDA disassembler (free version) and AWARD Modular BIOS source code that was leaked years ago.

Re: FIC PT-2003 temperature issue

Posted on 2021-10-15, 14:27

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi everybody, it took a while for the SB82437FX66 to arrive from China. I received it yesterday well packed in mint conition in it´s original tray, no legs bent. I couldn´t wait to fit it in so first I restored the lost soldering pad with a thin wire (see blue arrow in the picture), then carefully …

Re: pc chips mainboard M573 resurrection

Posted on 2021-10-15, 11:31

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Ydee wrote on 2021-10-15, 09:49: I don't think it's 2pin and 3pin - rather in the second photo there's a cap on one pin jumper and it creates the appearance that there are 3 pins. The third pin would conflict with the IC leg to the right of the jumpers. Yes, I agree 😀

Re: Asus P3C2000 troubleshooting

Posted on 2021-10-14, 15:13

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Regardless of the jumper settings, various memory chips and two processors (p3-550 and celeron), the board does not show any signs of life after being turned on. No bios beep sounds. The CPU does not heat up at all until I put the cpu without heatsink, naked die is lukewarm. The board looks perfect …

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