Search \ VOGONS

Re: PATA 133, SATA 150 or SCSI U160 for 486 PC

Posted on 2019-01-06, 16:57

ALI1487 / 1489 dma support win95 + dos udma enabler Here's someone with similar board, found drivers and enabled MWDMA. (At glance, similar benefits with UDMA) Hope it helps you too. 😀

Re: PATA 133, SATA 150 or SCSI U160 for 486 PC

Posted on 2019-01-06, 14:09

by GigAHerZ

in Marvin \ General Old Hardware

UDMA vs PIO is a lot bigger jump than the versions between them. Jumping from PIO to UDMA frees up huge amount of CPU time. (and you want that on 486!) What operating system are you using? In dos you can search for UHDD & UDVD2 drivers, that support DMA operating modes. In windows 95+, you can tick …

Re: x87 co-processor emulator? A real thing or totally fake?

Posted on 2019-01-05, 20:46

by GigAHerZ

in Marvin \ Software

Thank you guys for the answers! I'll definitiely try those through second time. This time i'll try to get my hands on falcon 3.0 and maybe some autocad software to check it out. Any other suggestions to try out to see the performance of emulated 387?

Re: What were those covered up ports above the backplate in old cases for?

Posted on 2019-01-04, 13:55

by GigAHerZ

in Marvin \ General Old Hardware

All my cases have had smaller "ears" so that those screws of the port itself keeps it attached to the case...

Re: The perfect computer

Posted on 2019-01-04, 12:17

by GigAHerZ

in Milliways

The perfect computer is a computer where you can download RAM from the internet! But in a sense, it would be - a fully software defined computer. No specific hardware at all, everything is defined in software and only specification you would have about hardware is count of integral switches/ …

x87 co-processor emulator? A real thing or totally fake?

Posted on 2019-01-04, 11:59

by GigAHerZ

in Marvin \ Software

Wandering around the interent, i've found some programs/TSRs, that claim they can emulate maths co-processor in software. Of course slower than real hardware, but better than nothing... With few of them i did a quick test by trying to start quake, but all of them failed. At the same time, in theory, …

Re: Win9x only games without software Direct3d mode

Posted on 2019-01-04, 08:17

by GigAHerZ

in Windows

Monstertruck Madness 2 comes to my mind. ... I haven't tried, if it works on XP+, but it's definitely Win95 era game, that had software mode and accelerated modes. (If i still remember correctly 😀 )

Re: Tomato 4DPS 2.0 + Cyrix DX2-66 - not work

Posted on 2019-01-03, 18:49

by GigAHerZ

in Marvin \ General Old Hardware

This is wrong way. Where the "rear" arrow points? And compare it to the direction, where your rear vga port for example would be...

Re: What are the options for large amounts of data accessible from DOS?

Posted on 2019-01-03, 18:41

by GigAHerZ

in Marvin \ General Old Hardware

SD->IDE adapters do exist. They cost a bit more, because it must be intelligent enough to actually convert the SD card's protocol to IDE protocol. Random quick searches, definitely not the cheapest offers: https://www.ebay.com/itm/44-Pin-Male-IDE-To-SD-Card-Adapter-BN-U0/282271953975?epid=1469258947 …

Re: Got another 486 in mail today. Questions.

Posted on 2019-01-03, 15:28

by GigAHerZ

in Marvin \ General Old Hardware

Baoran wrote: Nobody knows what motherboard that is and if there are jumper settings for it online somewhere? Google image search with chipset numbers lead me to here: http://home.att.ne.jp/alpha/pcboard/486.htm Seems to be ABIT AV450

Re: Serial mouse stopped working.

Posted on 2019-01-03, 08:05

by GigAHerZ

in Marvin \ General Old Hardware

I hate those -12V problems... My journey is here: [FIXED] Serial ports both dead? (Acorp 5VIA3P / EFA P5V580) Good to hear you have successfully diagnosed the problem. (Y)

Re: What are the options for large amounts of data accessible from DOS?

Posted on 2019-01-02, 19:14

by GigAHerZ

in Marvin \ General Old Hardware

Same here. I have a shoebox full of classic 3Com 3C509B-TPOs. 😜

Re: What are the options for large amounts of data accessible from DOS?

Posted on 2019-01-02, 17:25

by GigAHerZ

in Marvin \ General Old Hardware

Regarding loading ISO's into emulated CD drive under DOS, there are also easy options: http://adoxa.altervista.org/shsucdx/

Re: What are the options for large amounts of data accessible from DOS?

Posted on 2019-01-02, 17:21

by GigAHerZ

in Marvin \ General Old Hardware

CF/SD -> IDE are good. CF is direct connection, SD need some intelligence, because it doesn't share the IDE protocol. Some motherboards will not see harddrives larger than ~500MB. Solution on Hard Drive overlay like OnTrack or EzDrive. (At boot time, modifies bios, then exits, therefore no ram usage …

Re: small electronic fix

Posted on 2019-01-02, 08:17

by GigAHerZ

in Milliways

Cyberdyne, you mean that backup ups kicks in only when input fails? Line interactive one is turned on all the time, correcting the voltage. (Though, its not creating the whole output power from scratch) https://www.youtube.com/watch?v=Fj7e3WGUKO8

Re: Resurrecting an Socket 3 motherboard (Soyo SY-25N)

Posted on 2018-12-31, 13:32

by GigAHerZ

in Marvin \ General Old Hardware

quicknick, Thank you for the upload! As i haven't still be able to source the bios by model name (only this 25R version, not 25N), you might have just saved that motherboard of mine. Thank you! arteq, I hope that as well, we'll see. I have 2 chips coming on my way and have a friend with appropriate …

Re: Resurrecting an Socket 3 motherboard (Soyo SY-25N)

Posted on 2018-12-31, 10:55

by GigAHerZ

in Marvin \ General Old Hardware

arteq, I've found that first link. Thanks for the second one. It somewhat confuses me, is the 25R bios meant for my 25N as well? I have downloaded it and waiting for chips to arrive so i can burn it on, but i'm not really sure it's the right bios image...

Re: Resurrecting an Socket 3 motherboard (Soyo SY-25N)

Posted on 2018-12-31, 09:59

by GigAHerZ

in Marvin \ General Old Hardware

quicknick, Mine has also a sticker labeled "025N2" so i think it's a match! When i get home, i'll make a picture of it. But most notably, it's the SY-25 motherboard WITHOUT the 3.xx V power regulator in place. (So non-"P" version, i think) Any chances for you to get the bios image off from your …