Re: M912 with 1 MB cache

Posted on Today, 01:32

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Going from 256K cache to 1Mb on a 486 yields only about an 11% improvement (https://www.vogons.org/viewtopic.php?p=966683#p966683) with 512k you probably are only 5% less than 1Mb... Just going by douglars tests..... not sure why 1Mb cache be important on a 486, seems overkill :) Ask douglar what …

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Re: ECS UC4914-G - Requesting GAL chip dump

Posted on Today, 01:12

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hmm the ECS AL486 also has a GAL (16V8B) and it is connected to the VESA slot portion for sure, and appears to go to the waitstate/speed jumpers (not 100% verified, just looking at back of board, could be wrong)... maybe it is for same reason??? If so the board should work fine with just ISA cards …

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Re: DOS 7.1 PCI NIC packet driver issues (no packets received)

Posted on Today, 01:02

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Great ! Glad you got something working. Wonder if that PnP audio card uses some odd resource that the Intel nic did not like. Not sure why a diff PCI slot would matter but odd things can happen 😀

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Re: Is the Pentium 4 underrated for retro computing?

Posted on Yesterday, 02:39

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The Windows 11 TPM 2.0 requirement is a big problem, though. That's what is going to finally render these computers retro. The TPM requirement is BS. The more concerning requirement is the 8th gen Intel processor requirement. (Every processor that meets the processor requirement, plus a whole bunch …

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Re: Pentium PRO?

Posted on Yesterday, 02:18

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

P.Pro 200 CPU + Motherboard was running near $1000 from Feb to Sept 1996 in my area. The boards were $300-$400 by them self. Attached a picture from the Sept 1996 local Computer Bits showing some prices from two local sellers, had a April edition but cannot find it... You are correct about the P5- …

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Re: Need help to identify a burned component in an intel AL440LX micron millennia motherboard

Posted on 2024-05-08, 13:15

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Depends on what bios version is on the board. According AL440LX Spec Update May 1999 on page 27: "The motherboard supports the Celeron processor at 266 MHz with BIOS version 4A4LL0X0.86A.0023.P08, or later. Earlier BIOS versions will identify the processor as a Pentium II processor and will not work …

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Re: Motherboard Repair - PCChips M912 (FuGu Tech MBM-686FG) CPU Power Transistor

Posted on 2024-05-08, 02:16

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Good work !

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Re: Is the Pentium 4 underrated for retro computing?

Posted on 2024-05-07, 03:30

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I think P4 soc 478 is perfect for a retro w98/xp windows computer IMHO. Like PcBytes have a few p4 boards (and one complete system built) added: Wanna see something funny ? I own two GA-8ipe1000-g rev 4 boards, both socket 478 but Giga's website has an error and has some wrong specs on main page …

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Re: Pentium PRO?

Posted on 2024-05-07, 03:09

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Also interesting was that the ppro was not as egregiously expensive in single cpu form as many note (late 95 yes but prices eroded rapidly on pro180’s) , late 1996 the local tech bought around 250x ppro 180’s with Micronics motherboards and they weren’t significantly more expensive than a top of …

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Re: ASUS P2B-VE - Finding a compatible AGP Card

Posted on 2024-05-07, 01:02

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yeah forgot the Slot boards were ZX-100, the soc 370's were ZX-66 zida had ZX doing reliable 100MHz https://theretroweb.com/motherboards/10673 worked with C366@550, afaik even coppermines after socket modding I dont remember if it had fsb selection in bios (doubt) or if I was soldering pins on the …

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Re: ASUS P2B-VE - Finding a compatible AGP Card

Posted on 2024-05-06, 22:24

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yeah the ZX is really nothing more than an updated LX, both locked at 66Mhz (Intel says a limited 440BX designed for Celerons ) To avoid confusion, there are two versions of the Intel 440ZX chipset which are the ZX-66 variant that you mentioned and the one officially supporting 100 MHz FSB without …

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Re: ASUS P2B-VE - Finding a compatible AGP Card

Posted on 2024-05-06, 04:06

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yeah the ZX is really nothing more than an updated LX, both locked at 66Mhz (Intel says a limited 440BX designed for Celerons )

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Re: Im unable to add network Card to 486 Siemens Nixdorf Scenic 4L

Posted on 2024-05-06, 03:37

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I agree that using older versions of anything may not be a good idea. Two people with same issue with DHCP.exe made me think about: newer BIOS versions with dropped micro code, newer video drivers that give worse performance/crashes, etc so was just a thought. As I said "(doubt that will help but …

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Re: ram problem of 1.35V

Posted on 2024-05-06, 02:48

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I would say yes board and bios compatibilty. My Asrock Z77 Fatality Pro does not list any DDR3L in it's memory QVL or manual. The Asus P5G41T-m does support DDR3L but only a few specific dimms with specific model and chip numbers...just a few other examples... "GEIL GG34GB1333C9DC 4096MB (Kit of 2), …

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Re: ram problem of 1.35V

Posted on 2024-05-06, 01:51

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

according to one forum the default dram voltage is 1.5v or what the XMP value says. you can use cpuz to see the SPD and XMP data. added: The power difference between 1.5v and 1.35v ddr3 is negligable barely 10%. DDR3 and DDR4 both use about 4watts per 4gb, based on that with 16gb you would save 1.6w …

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Re: ram problem of 1.35V

Posted on 2024-05-05, 20:37

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Check the bios, according to the manual there is a dram voltage entry. Auto is the default.....manual does not mention what other settings it has.

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Re: Windows 95 VMCPD.VXD blue screen freeze on boot when FPU installed. Any ideas?

Posted on 2024-05-05, 15:56

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

A little further digging into Win95a and Cyrix, from the General.txt : Computers with Cyrix CPU "If you have an Epson 866C or Microcenter Winbook computer, you may experience periodic general protection faults. To fix this problem: 1. Copy WB16off.exe from Windows 95 Setup Disk 1 (or if your product …

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Re: Windows 95 VMCPD.VXD blue screen freeze on boot when FPU installed. Any ideas?

Posted on 2024-05-05, 02:42

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The only good reference to a VMCPD error is this from MS: https://ftp.zx.net.nz/pub/archive/ftp.microso … -us/136/255.HTM but only applies to Cyrix dlc cpu + cyrix fastmath...did hex edit the win95a and osr2 .vxd's and there is some code differences.

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Re: Im unable to add network Card to 486 Siemens Nixdorf Scenic 4L

Posted on 2024-05-04, 22:46

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Probably not the same but dionb is also having issues with DHCP.exe working: DOS 7.1 PCI NIC packet driver issues (no packets received) I gathered and upped all found versions of mTCP here: https://archive.org/details/mtcp_20240504 Maybe try an earlier version (doubt that will help but can't hurt …

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Re: Gravis PC Gamepad connection and driver questions

Posted on 2024-05-04, 19:34

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Ok wayback is back online. Here is the FAQ page for PC Gamepad: https://web.archive.org/web/19980128204742/http://www.gravis.com/TEXTPAGE/FAQ/JOYSTICK/pcgpad_txt.htm and drivers: https://web.archive.org/web/19990117015029/http://www.gravis.com/support/software_updates.html Note: "GamePad --- Use the …

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