Re: Graphics card benchmarks/rankings for DOS machines. (ISA and VESA local bus)

Posted on 2020-07-21, 01:42

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by nzoomed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

http://vgamuseum.info/index.php/benchmarks Vgamuseum has some isa and vlb comparisons mostly in the 486 tests. Everyone has different testing expectations, some people will test cards in the fastest system possible so that the vga card is the likely bottleneck. You get some super unrealistic …

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Graphics card benchmarks/rankings for DOS machines. (ISA and VESA local bus)

Posted on 2020-07-20, 23:55

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by nzoomed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Is there a list somewhere with the ratings of the best cards for DOS? Im trying to work out if there is anything better than the cards I currently have. Ive been told that Cirrus logic had better offerings than the Tseng Labs cards of the time and that basically most trident cards are junk. I found …

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Re: Ultimate 386 system?

Posted on 2020-07-20, 09:58

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by nzoomed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Can confirm that even the excellent FastDoom is quite a compromised experience on the 386: https://www.vogons.org/viewtopic.php?t=74886 The hardware is brilliant for platformers & pinball of course. Jazz Jackrabbit tests the limits in places with the occasional slowdown, solved by turning the …

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Re: Ultimate 386 system?

Posted on 2020-07-20, 08:14

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by nzoomed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Really like the look of these ASUS 386 mobos. I put the date to market of this one somewhere between late 1993 and first half of 1994. If you dont care about period correctness then ISA GD-5434 will be a good fit, quite expensive these days. Otherwise a "cheapo" et4000/w32i will be just as good I …

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Re: Newly made ISA CL-GD5434

Posted on 2020-07-20, 08:01

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by nzoomed

in Marvin \ Video

in Marvin \ Video

wow, this looks a great project. Im definitely interested in grabbing one of these cards!

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Re: Ultimate 386 system?

Posted on 2020-07-20, 05:47

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by nzoomed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Quick update: Been going through the cards and have found an Octek AVGA-20H with a cirrus logic CL GD5420 chip Ive also found a Vesa card with a GD5428 chipset which is not much use in this machine but may be good for my 486. Got a bunch of various oak, trident and reaktek cards that I now …

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Re: Ultimate 386 system?

Posted on 2020-07-20, 04:47

by

by nzoomed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Cirrus Logic CL GD5434 is currently considered the best all around choice for systems with only ISA slots. What it comes down to is if you care about running Windows at something better than 640x480x256. 386s won't really need anything better than that, unless you just want to play around (I like …

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Re: Fake ISSI cache chips?

Posted on 2020-07-19, 10:40

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by nzoomed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes or Cachechk. You will have to do some swapping to find the bad one if there is one. Hope you bought more than needed. Hint: mark each one with a Sharpy pen 1 thru how many you have (can always remove with ISO Alc.) so you do not get confused if you get a failure... yup definitely. I might buy a …

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Re: Ultimate 386 system?

Posted on 2020-07-19, 10:32

by

by nzoomed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes it is early Asus, the ISA-386c was there first according to Asus themselves: https://www.asus.com/Microsite/mb/ASUSMB1st/index.aspx If you have one then you are one of Three here at Vogons that I know do own one. Great find on the ISA-386U3, it is one of their 6 only 386 boards afaik This board …

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Ultimate 386 system?

Posted on 2020-07-18, 23:39

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by nzoomed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I think I scored this nice board out of the skip bin! I cleaned it up, replaced the battery and it works. Currently ive installed 16MB of RAM in it, and added a 3CA7 Math processor. Other improvements are I want to add more cache to its maximum 256K. Will this board support low latency 12ns cache …

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Re: Fake ISSI cache chips?

Posted on 2020-07-18, 23:27

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by nzoomed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I just bought a bunch off ebay thinking I had got the real deal and then learned about these fake chips! Do you think mine are legit? Your chips look convincing to me. Most lots of fakes I encountered had the same datecode over the whole lot. The date code (97, 98 and 99 for the -12 chip) makes a …

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Re: Fake ISSI cache chips?

Posted on 2020-07-17, 12:22

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by nzoomed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Certainly faked. Date code is silly and they weren't labled like that. Most likely 20ns or even 25ns ones. i agree that they are faked for the silly date, and i also suspect that all laser engraved ones are all faked. but, how should the real ones be labeled like? i am just not sure if the ones i …

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Re: 486 voltage converters

Posted on 2020-07-17, 12:20

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by nzoomed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It's hard to compare the DX4s, because AMD came in three flavours: -8kb write through -8kb writeback -16kb writeback (can work in write through mode too) However, back "in the day" only the 8kb versions were common. Intel came in writeback and writethrough flavours as well, both with 16kb cache. …

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Re: Fake ISSI cache chips?

Posted on 2020-07-17, 06:10

by

by nzoomed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I just bought a bunch off ebay thinking I had got the real deal and then learned about these fake chips! Do you think mine are legit? They look new and shiny plating on the pins, dont see any sign of the tops being sanded down and the markings are printed white and not laser engraved like some …

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Re: 486 voltage converters

Posted on 2020-07-17, 05:53

by

by nzoomed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Going from a DX/2-66 to a DX/4-100 should give you a lot more than a 10% boost especially if you're using an Intel DX4. POD83 is borderline useless as a 486 upgrade, because the 5V systems that actually need it can't run it at full speed. Not to mention, it's only really fast at floating point …

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Re: Upgrading a DSTN display to a TFT in a laptop - is it possible?

Posted on 2020-07-17, 03:30

by

by nzoomed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Most of the Toshiba laptops set their brightness through a software utility. The wheel on the side of the display is for contrast and if it has that then it's pretty much always a DSTN panel. I've done some looking into whether it's possible to swap panel types between models and while the boards …

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Re: Upgrading a DSTN display to a TFT in a laptop - is it possible?

Posted on 2020-07-16, 07:29

by

by nzoomed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Looking at the part number chart, it says the (older) 220CDS can take a CSTN replacement and takes the same panel as the 300CDS. Is a CSTN panel much better than a DSTN? I might just look for another gaming laptop, I thought I was on to something with this, but never realised how bad these screens …

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Re: Upgrading a DSTN display to a TFT in a laptop - is it possible?

Posted on 2020-07-15, 11:44

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by nzoomed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I did something like this before. The TFT display required an additional signal connector on the vga board. Check the vga board. Maybe it only "suppoorts" DSTN panels by native. OK, that makes sense, i saw a photo of this screen on ebay and it has an extra ribbon connector, I have no way of knowing …

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Upgrading a DSTN display to a TFT in a laptop - is it possible?

Posted on 2020-07-15, 08:17

by

by nzoomed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have a toshiba 300CDS laptop, its a real nice laptop except for its passive matrix display. Looking at the part numbers I can still find plenty of replacements on ebay. My question is, since the screen is faulty, is it possible to replace with an active matrix display, or do they use a different …

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Re: Germicidial UV-C lamp for Retrobright

Posted on 2020-02-21, 22:21

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by nzoomed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I bought a cheap 6W germicidal lamp from china (which arrived in 1 week somehow lol) and it surely produces a lot of ozone. I have used it for its intended purpose only so far but I might try it in a box with a piss colored Dreamcast shell (taht changed color hidden away in a closet) to see what …

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