Re: Daewoo AL486V-D BIOS needed

Posted on 2019-01-08, 09:02

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

OT: Woah, i didn't know VLB is even possible with 386 processors! I have understood it's specific to the 486 architecture... Does VLB work with the real 386 processors, or is it enabled only with 486DLC processors?

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Re: I recently found this hardware, AKA the Dumpster find thread.

Posted on 2019-01-07, 15:57

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

bjwil1991 wrote: Never knew that Sanyo made computers back then. Me neither. But when it need some AA or AAA batteries for CMOS settings, i can't put anything but eneloops in there. 😁

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Re: I recently found this hardware, AKA the Dumpster find thread.

Posted on 2019-01-07, 14:56

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

So, i was able to aquire this... "thing"... Google does not help much at all with this. Supposedly it's a 286 @ 12MHz, but don't know much more about it. Unopened, brand new, Sanyo MBC-27MT1, from Japan, through Finland, ended up in Estonia, stored away on 1988. When i have some time, i'll try to …

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Re: 386sx vs 386dx ?

Posted on 2019-01-07, 13:24

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

None of them has a math-co processor... (You need a 387 separately) SX has 16bit wide bus, DX has 32bit wide bus.

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Re: Benefits of building a 386 computer ?

Posted on 2019-01-07, 13:17

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Assuming you have a proper (in my opinion) 486 with as many VLB cards as possible, then 386 is your ISA based computer. Different architecture, different experience... 486 with only ISA buses is, in my opinion, glorified 386...

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

Posted on 2019-01-06, 16:57

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

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. 😀

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

Posted on 2019-01-06, 14:09

by

by GigAHerZ

in Marvin \ General Old Hardware

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 …

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

Posted on 2019-01-05, 20:46

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by GigAHerZ

in Marvin \ Software

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?

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

Posted on 2019-01-04, 13:55

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by GigAHerZ

in Marvin \ General Old Hardware

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...

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Re: The perfect computer

Posted on 2019-01-04, 12:17

by

by GigAHerZ

in Milliways

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/ …

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

Posted on 2019-01-04, 11:59

by

by GigAHerZ

in Marvin \ Software

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, …

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Re: Win9x only games without software Direct3d mode

Posted on 2019-01-04, 08:17

by

by GigAHerZ

in Windows

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 😀 )

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

Posted on 2019-01-03, 18:49

by

by GigAHerZ

in Marvin \ General Old Hardware

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...

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

Posted on 2019-01-03, 18:41

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by GigAHerZ

in Marvin \ General Old Hardware

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 …

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Re: Got another 486 in mail today. Questions.

Posted on 2019-01-03, 15:28

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by GigAHerZ

in Marvin \ General Old Hardware

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

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Re: Serial mouse stopped working.

Posted on 2019-01-03, 08:05

by

by GigAHerZ

in Marvin \ General Old Hardware

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)

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

Posted on 2019-01-02, 19:14

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

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

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

Posted on 2019-01-02, 17:25

by

by GigAHerZ

in Marvin \ General Old Hardware

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/

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

Posted on 2019-01-02, 17:21

by

by GigAHerZ

in Marvin \ General Old Hardware

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 …

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Re: small electronic fix

Posted on 2019-01-02, 08:17

by

by GigAHerZ

in Milliways

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

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