cd-rom problems

Posted on 2019-09-15, 12:09

by

by mhdbox385

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have three cd-roms to be used with a pentium-100 DOS pc. For clarity let's name them cdrom1, cdrom2 and cdrom3. Cdrom1 works good with all CDs. Cdrom2 and cdrom3 were problematic, friend suggested to clean the lens, I did so, that did not solve the problem. But I noticed that cd-rom2 fails to read …

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Re: crt resolution issues

Posted on 2019-07-28, 21:17

by

by mhdbox385

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Another question about changing the shape and position of image box. crt starts by firing electrons for r then g then b, and repeats. rgb, rgb, rgb... When I move or shape the box, what if the electron that was supposed to hit red phosphor starts by hitting blue phosphor and the whole image is all …

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Re: crt resolution issues

Posted on 2019-07-28, 17:49

by

by mhdbox385

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The monitor has absolutely no idea about the horizontal pixel count through a VGA cable. It only knows that the signal carries 400 (visible) scan lines per frame and synchronizes its horizontal scanning speed to this rate. Then it draws everything that comes through the cable when it comes through. …

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Re: crt resolution issues

Posted on 2019-07-28, 14:56

by

by mhdbox385

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hmm ok, so nothing changes physically. Only image box changes, in size and shape, according to how the beam moves. In that case, it seems to me, that almost all the time we are not getting pixel-perfect image, because one would have to adjust the image box to such a setting that a pixel would fall …

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crt resolution issues

Posted on 2019-07-28, 10:02

by

by mhdbox385

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have a crt monitor that I use for my retro pc: Sony Trinitron model "CPD-E100E", also has "Multiscan E100" written in front. I made a research about the model and the technology in general. It turns out that trinitron monitors use vertical grills, so their maximum horizontal resolution is fixed. …

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Re: Doom benchmark result list

Posted on 2019-07-11, 08:51

by

by mhdbox385

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I need it for world peace.

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Doom benchmark result list

Posted on 2019-07-10, 20:21

by

by mhdbox385

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

...

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Re: help identify 386 motherboard

Posted on 2019-07-01, 16:39

by

by mhdbox385

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

O M G :O For some reason, I decided to connect my 80mb ide hard drive as well (which has ms-dos 5.0 on it), AND it worked ! After the error line, now it says "press F1 to continue", I press F1 and it boots to ms-dos 4.01 on 720kb floppy, not hard drive, on top of that it doesn't even recognize hard …

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Re: help identify 386 motherboard

Posted on 2019-07-01, 16:22

by

by mhdbox385

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I tried floppy/drive combinations on another pc, it is OK. I am pretty sure there are no other problems in my system(such as hardware not working or not being recognized). To answer your second question, I don't have it.

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Re: help identify 386 motherboard

Posted on 2019-07-01, 14:59

by

by mhdbox385

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

No, Let me explain problem in more detail: I switch on the pc, after ram size check, it gives error "161 - System options not set (Run SETUP in REFERENCE DISK)" Then it tries to read the floppy for a few seconds, and nothing happens. That's it. I am left with a screen that shows 2mb ram and that …

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Re: help identify 386 motherboard

Posted on 2019-06-30, 16:08

by

by mhdbox385

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Any idea how can I properly "burn" this to a floppy, as an img file (with proper boot)? Things I tried so far, will be updated as I try more: * Simply copied rd_ax325.zip files to 1.44mb 3.5" floppy, it did not work * Copied rd_ax325.zip files to a 1.44mb 3.5" floppy with a ms-dos 5.0 boot on it, it …

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Re: help identify 386 motherboard

Posted on 2019-06-29, 15:56

by

by mhdbox385

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Update: It turns out that this motherboard is from "epson pc ax3/25" but is very similar (maybe exactly similar) to "epson equity 386/25". I got it working but there is one problem, it gives this error on start: "161 - System options not set (Run SETUP in REFERENCE DISK)". Pressing F1 to bypass the …

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Re: Slow Doom on fast Retro PC

Posted on 2019-06-19, 16:43

by

by mhdbox385

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

vga card is ISA, tseng et4000ax, one of the fastest. But don't tell me ISA is the reason, because a 486dx2-66mhz with 8mb ram and et4000ax vga does better than 21fps. pentium 200 is triple the clock plus superscalar, ~5 times faster on raw cpu power. Now, accounting for same vga speed on both, my …

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Re: Slow Doom on fast Retro PC

Posted on 2019-06-18, 17:34

by

by mhdbox385

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I said kaze clozed.

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Re: help identify 386 motherboard

Posted on 2019-06-18, 17:29

by

by mhdbox385

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

PC Hoarder Patrol, Thank you very much !!

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Re: help identify 386 motherboard

Posted on 2019-06-18, 15:16

by

by mhdbox385

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

😀 Well, what I meant was, I need help finding informations about this board, what is what?, jumper settings, etc... by the way this thing uses intel 386dx-25mhz

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Re: Slow Doom on fast Retro PC

Posted on 2019-06-18, 15:14

by

by mhdbox385

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Topic 67600

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help identify 386 motherboard

Posted on 2019-06-17, 18:41

by

by mhdbox385

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

(Updated) This motherboard is from "epson pc ax3/25" but is very similar (maybe exactly similar) to "epson equity 386/25". I got it working but there is one problem, it gives this error on start: "161 - System options not set (Run SETUP in REFERENCE DISK)". Pressing F1 to bypass the error does not …

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Re: Slow Doom on fast Retro PC

Posted on 2019-06-15, 20:49

by

by mhdbox385

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

kaze ckolzzed.

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Re: Slow Doom on fast Retro PC

Posted on 2019-06-15, 18:43

by

by mhdbox385

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

kase klozed.

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