Re: Sigma Designs EGA cards - a deep dive

Posted on 2020-10-10, 01:29

by

by rmay635703

in Marvin \ Video

in Marvin \ Video

If you *do* run something that fiddles the registers directly to set a weird video mode, this card will happily send the CRT a nasty 31.5khz or 43khz hsync. Yikes. since I probably don't have any hope of ever finding a multisync TTL monitor that can sync at 31.5khz and beyond, this card is …

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Re: My new DOS machine... Pentium 75Mhz. Some advice...

Posted on 2020-10-10, 00:31

by

by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Are you using a PS2 or USB keyboard? If its USB change to a PS2 keyboard If its PS2, try another keyboard, hopefully its stuck key or something otherwise you'll need to do some repairs on the motherboard itself. Ghost is the easy option, adding a second harddrive and copying everything from c: to …

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Re: xp, 2k, nt3.5, nt4, nt5, dos 6 source and more leaked

Posted on 2020-10-09, 23:48

by

by rmay635703

in Milliways

in Milliways

MS-DOS 3.30 and MS-DOS 6.0 have been leaked before. I sure hope that someone in the underground will modernize and update XP, so we can use it forever. I would lean more toward modernization of 2k or NT4 They are much better operating systems than XP, with proper support added in a streamlined …

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Re: Moderator "It's not okay to bump a thread that's been dead without any new replies for 12 years."

Posted on 2020-10-07, 14:37

by

by rmay635703

in Milliways

in Milliways

I do kind of enjoy the occasional bubbling up of some ancient thread though, it's kind retro within retro if you see what Agreed, I have never seen a necro thread I didn’t like. I really don’t see any need to moderate this practice any more than a new thread, if it’s spam or whatever it would …

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Re: Apple prices

Posted on 2020-10-06, 16:49

by

by rmay635703

in Milliways

in Milliways

technically the device is now Apples to do with as it wants. As soon as it leaves Apples hands it is no longer their device. If they insist on destroying operable product they personally should have to destroy it. It’s this attitude that has foreign children “recycling “ electronics over a burn pit …

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Re: Apple prices

Posted on 2020-10-06, 08:57

by

by rmay635703

in Milliways

in Milliways

I’ve always thought useable product should be illegal to “recycle “ unless it’s EOL (which is A concept questionable in of itself) Recycling definitely makes pollution, the only way around that is Reuse Of the three Rs recycling is the least important yet here we are, dumpster diving is a crime and …

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Re: CGA monitor (Samtron SC-452) in need of revival

Posted on 2020-10-05, 01:34

by

by rmay635703

in Marvin \ Video

in Marvin \ Video

Albeit off topic color monitors made before 1988 were uncommon in 1988, most seemed to be B&W or RCA composite (or both) Most CGA compatible screens I’ve encountered weren’t dedicated CGA and instead a Magnavox or similar with selectable ttl/analog was easier to locate.

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Re: PS/2 mouse on IBM PS/2 models 25-8086 and 30-8086

Posted on 2020-10-04, 14:59

by

by rmay635703

in PC Emulation

in PC Emulation

I just checked the PS/2 Model 25-8086 technical reference, and it looks like I missed some parts before - it actually explicitly says both the keyboard and the pointing device are on IRQ 1, and says that is handled by INT 71h, no idea how that works. Tandy 1000RL and RLX both are XT and PS/2, on …

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Re: K6 233ANR on socket5

Posted on 2020-10-03, 13:28

by

by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

so, probably an mmx 233 can work easely? the overvolt i have read is not enough to destroy it. i can try p233mmx with more success?? I agree with adding cooling to the regulator. My past experience was that if you overtaxed the regulator things would rapidly become unstable and not become damaged …

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Re: K6 233ANR on socket5

Posted on 2020-10-02, 17:21

by

by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It works fine on single voltage but your linear motherboard regulator will burn up in 30 seconds I can't say for certain but looking at pictures of the IBM PC330 mainboard online it looks like they used a switching VRM design. (coils, large capacitors, no heatsink on transistor) Still needs to be …

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Re: K6 233ANR on socket5

Posted on 2020-10-02, 16:48

by

by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It works fine on single voltage but your linear motherboard regulator will burn up in 30 seconds

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Re: MSI 4144 - 486 mainboard and EDO RAM

Posted on 2020-10-02, 10:54

by

by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It sometimes depends on simm count, capacity , brand. I had an old 5x86 that would take any combination of Simms rock solid. I had a late DX4 that one edo simm would work, install another identical it worked. Install two different size EDO Simms and crash 32mb edo crash, 16mb fine, FPM fine In any …

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Re: Sound Blaster Pro: Why is it the game standard?

Posted on 2020-09-22, 12:06

by

by rmay635703

in Marvin \ Sound

in Marvin \ Sound

There is also the matter of cpu power. Several games had a sound quality selection 1 pentium 2 486 3 386 4 386sx On my Cyrix dx2 I usually selected pentium class 16bit stereo sound, all that would happen was an occasional screen studder The lowest settings were usually 8bit mono 11khz for 386

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Re: Fujitsu hard drives

Posted on 2020-09-22, 11:07

by

by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I had a 4gb Fujitsu that came in my MII 233 system The system always seemed glacial until I upgraded to a Maxtor 60gb drive. Drive was quite reliable and was sold in my college system (K6-2 450) to another student for cheap.

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Re: Jill of the Jungle support Tandy 3 voice?

Posted on 2020-09-20, 20:45

by

by rmay635703

in Marvin \ Software

in Marvin \ Software

Filename D8D3C633-433D-4F9A-B20A-0EEC043B6121.jpeg File size 67.94 KiB Views 356 views Odd

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Re: Until when PC used 10 function keys, instead of 12?

Posted on 2020-09-17, 18:12

by

by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Some of the very old PCs used for terminals had 24 function keys One of my AT/XT keyboards with this layout is dated 1985 Not really sure outside financials when the function keys got much use Usually F1 help F2 Menu F3 Print F4 fold/tab F12 (don’t remember but it seemed to be used a lot) F24 clear …

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Re: PC Chips M570 BIOS which has GUI

Posted on 2020-09-16, 13:51

by

by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I would hotswap to burn the bios Someone at Wims can likely help https://www.wimsbios.com/forum/motherboard-de … m570-t1205.html

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Re: K62-500 overclocking

Posted on 2020-09-15, 17:07

by

by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Perhaps antidotal but on several boards I had if I benchmarked a Standard k6-2 @ 5.5x theN benchmarked the same chip at a higher speed using the 6x multiplier My results were actually slower at the higher speed (and no usually in both cases I wasn’t overclocked either same bus speed as well) Also I …

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Re: K62-500 overclocking

Posted on 2020-09-15, 00:19

by

by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

K6-2 no K6-2+ yes

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Re: Jetboard (J-Mark) 656HXA with 6x86-PR166+ cpu, 32mb ram. Do I need extra L2 cache? What about chipset drivers?

Posted on 2020-09-14, 19:45

by

by rmay635703

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

More than 64mb on a pentium is far from useless Windows 98se comes to mind

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