Re: DOSBox And Physical Floppy Drive Question

Posted on 2016-09-13, 10:12

by

by Jo22

in DOSBox General

in DOSBox General

Virtual PC had the ability to talk to the real floppy drive. You could try to install FreeDOS in VPC 2007. Virtual PC 2007 works on Win x64. And FAT formatted VHD files can be opened in WinImage, for example. Edit: Oh and I almost forgot: VirtualBox now has the floppy controller disabled by default. …

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Re: Paging on the 80286 using segment descriptors?

Posted on 2016-09-13, 09:51

by

by Jo22

in PC Emulation

in PC Emulation

With OS support, it could be possible. The 286 has an address space of 1GB of virtual memory. Please don't take Win 3.1 standard mode as reference here. MS was perhaps just lazy to implement such a thing, because they focused on 386 enhanced mode and thus didn't care. But I'm just a user, so don't …

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Re: 486DLC Project

Posted on 2016-09-13, 02:21

by

by Jo22

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Glad we could help! ^_^ I don't know if this works, though. There are two types of lithium coin cells. Batteries (primary cells) and rechargeable batteries (accus). As a direct replacement (no diodes) you could use NiCD and NiMH types , but I think lithium models need a different charging technology …

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Re: The Brick 486DX

Posted on 2016-09-13, 02:05

by

by Jo22

in Marvin \ System Specs

in Marvin \ System Specs

Sweet machine! Just got a bit confused by the title. I accidently read "The Bricked 486DX". Haha. 😅

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Re: Preventing bad caps

Posted on 2016-09-13, 01:56

by

by Jo22

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

gdjacobs wrote: Apologies for being pedantic, but this is a mistake that is often made by electricians and even electrical engineers. Nah, that's perfectly fine what you said. So thanks for your reply and pointing this out. ^^ In my post I simply meant a very short amount of time, as you have …

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Re: LS-120 Super Discs versus regular floppies

Posted on 2016-09-13, 01:32

by

by Jo22

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hmm.. In my personal experience HD and DD types were often equally good. I've got several 5.25" 1.2M diskettes which still work fine. A proper storage is also important for the life time of a floppy, I think. I assume you have used protective covers for 3.5" floppies like you did for 5.25" types. …

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Re: Preventing bad caps

Posted on 2016-09-12, 20:38

by

by Jo22

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The best thing you can do to help prevent bad caps or at least extend their life is to use a great PSU. Everything in front of the PSU will be stressed more if the PSU can't deliver clean power. Get yourself a great quality brand such as Seasonic, FSP/Fortron, Sparkle, others as well, but you get …

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Re: windows10 couldn't be insatlled.

Posted on 2016-09-12, 19:49

by

by Jo22

in Milliways

in Milliways

Note that 64bit releases of Win 8.1/10 do also require a fairly new processor with support for the CMPXCHG16b instruction. http://www.guru3d.com/news-story/some-older-a … indows-8-1.html

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Re: Preventing bad caps

Posted on 2016-09-12, 18:12

by

by Jo22

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

AFAIK, that bad capacitor plague was caused because those capacitors are filled with bad formulated liquids. They were made around Athlon and Pentium 4 478 times, so Pentium II and III are not affected (they were made earlier). A funny fact is that I've seen far more Pentium 4 motherboards with …

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Re: Please help me find software to back up my huge CD collection

Posted on 2016-09-12, 10:00

by

by Jo22

in Milliways

in Milliways

I am in the process of building a new server with at least four 2TB SATA drives. Quick question, is RAID10 better and more safe than RAID5? Or should I stick with RAID1 like I had in my previous 2-drive servers? RAID is good, but keep in mind that it doesn't protect you of data loss. That's what …

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Re: LS-120 Super Discs versus regular floppies

Posted on 2016-09-12, 09:47

by

by Jo22

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Ordinary floppies were quite reliable, too. At least that was true for those made in the 80s and 90s. It wasn't unitl the new millenium, when the quality went down hill.. Same for floppy drives (but not so extreme). About the time when the floppy media became obsolete, manufacturers nolonger cared …

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Re: Windows 95 Pentium Build

Posted on 2016-09-12, 07:24

by

by Jo22

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I think temperature isn't a bad thing per se. Some devices require a specific amount of warmth to work properly.

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Re: 486DLC Project

Posted on 2016-09-12, 06:53

by

by Jo22

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

You're right, I thought the OP was asking for a way to replace the on-board battery. Using an external battery on the connector is safe, as you said. 😀

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Re: 486DLC Project

Posted on 2016-09-12, 06:17

by

by Jo22

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Why add a germanium diode to 2xAA batteries? The 2 batteries in series will give 3V, minus the 0.3V (actually most germanium diodes are 0.4-0.5V drop) would give 2.7V or less. The diodes do also act as some kind of "flow control" - they let pass the power in only one direction. It is used as a …

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Re: increase the max ram use with dosbox?

Posted on 2016-09-12, 06:00

by

by Jo22

in DOSBox General

in DOSBox General

I don't think this limit was a highhanded decision of the DOSBox team. There's a reason for this. As far as I know, 64MB were the limit of the old XMS memory standard . This affected all Himem.sys versions shipped with the real versions of DOS upto 6.22. Newer versions of Himem.sys, which are XMS …

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Re: Help me find the best easy to use hard drive cloning software

Posted on 2016-09-12, 05:46

by

by Jo22

in Milliways

in Milliways

That's as often as I do take a shower. (Edit: That was a joke..)

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Re: Please help me find software to back up my huge CD collection

Posted on 2016-09-12, 05:36

by

by Jo22

in Milliways

in Milliways

About that CD backup thing.. I used Nero for years. Its virtual writer can create NRG files which have the ability to store all CD tracks. But that's just me. Most people prefer this BIN/CUE thing, I guess. Anyway, the NRG format is widely known, so programs like MagicISO or similar can read it, at …

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Re: 486DLC Project

Posted on 2016-09-12, 05:10

by

by Jo22

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi there, fellow 486DLC owner! :-) That's a nice box you have. Looks clean and shiny. And gratulations on the CT1740, it's a fine card. Albeit a bit noisy for some (hence sometimes called Noise Blaster). Anyway, it makes up to that by being a stress-free and quite compatible card with a real OPL3. …

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Re: XTIDE Universal BIOS rev588 + NIC + High end 486 + Win95osr2.5 = BIG FAIL

Posted on 2016-09-12, 04:37

by

by Jo22

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Out of curiosity, does this Universal BIOS thingy cooperate well with protected mode drivers ? I'm thinking of FastDisk or OS/2's own disk driver. Especially Windows 3.1 is what me worries a bit. It's WD1003 driver is quite stable, but also a bit paranoid. In case of doubt it will instantly cease …

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Re: Dang Small Linux on Panasonic CF-25 - No Sound

Posted on 2016-09-12, 04:22

by

by Jo22

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Don't worry, it's not your fault. Sound in Linux systems never worked for me, either. Around 2000 I tried to load SB16 drivers in KDE (?) and everything freezed when I enabled full-duplex mode. Hasn't been getting better since then. PulseAudio kind of works, but always stutters on my PCs. And in the …

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