VOGONS


Reply 13681 of 22114, by liqmat

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derSammler wrote:

Re-attached the display, added a CF card and installed DOS 6.22 - works! 😀

Can we please get the sexy Hollywood wide shot with the system on?

(っ•́。•́)♪♬

Reply 13683 of 22114, by Bruninho

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derSammler wrote:

Re-attached the display, added a CF card and installed DOS 6.22 - works! 😀

AMAZING! 😁

"Design isn't just what it looks like and feels like. Design is how it works."
JOBS, Steve.
READ: Right to Repair sucks and is illegal!

Reply 13684 of 22114, by derSammler

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What's special about it? Is it faster or rarer compared to the other 486 CPUs?

It's very fast, does not require a heatsink, and is very low-power. Also, it was forbidden to sell it in the USA. 😉

The BIOS reports the CPU as running with 100 MHz, even though it only runs at 33 MHz.

liqmat wrote:

Can we please get the sexy Hollywood wide shot with the system on?

Yes, but probably not today.

Reply 13685 of 22114, by dionb

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After a few weeks with no time to even look at my vintage hardware, I managed to get a little bit in this evening. Quick benchmark of my Alaris Leopard (IBM486SLC2-66) board, specifically VGA performance of VLB vs ISA. This CPU only has a 16b external bus, so wanted to see how VLB performed.

3DMark2
UMC 85C418F 32.6
S3 928 VLB 31.4
CL 5424 VLB 31.4
WDC 90C31A ISA 25.2
Tseng ET4000AX ISA 25.2
UMC 85C408F ISA 23.3
Tseng ET3000AX ISA 15.6

Those ISA scores are identical to what I benched on my 5x86 VLB system, so clearly that's the bus being a bottleneck. The VLB scores - though better - are significantly lower, about 3/4 of what I benched on IIRC (can't find my figures now 😮 ). Of course the CPU is also running at 3/4 of the clock speed of the 5x86, but something tells me as this is DOS they were both just bottlenecking on the VLB.

Does once again show how nice the UMC 85C418F is for DOS, right up there with the ARK1000VL. It also has an interesting character set, looks slightly more like CGA/MDA/EGA than most VGA cards.

Now I still haven't though what to do with this little beauty of a system. So many options 😜

Reply 13686 of 22114, by bandicoot67

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Found this the other day. Never seen one of'em before!
..of course, as far as i am concerned...im just happy there is a huge visual aide on the back bottom right corner in the form of a big fat red tick, boldly declaring that this game is "virus free"...cause i wouldn't put into any one of my old my computer's unless this symbol was on it. 😒

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Reply 13687 of 22114, by xjas

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My little ode to the 5th & 6th generation of x86 is now hanging in its place of honor (next to my only other framed "retro computing" item.)

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...Now that this is up, I'm DEFINITELY gonna have to take it down and re-do it. I don't particularly like my mounting system (which is causing it to hang tilted forward like that) and I'm not overly happy with the matting I made. It looks OK in the photo, but I can do better. 😀 Still, good enough for now.

twitch.tv/oldskooljay - playing the obscure, forgotten & weird - most Tuesdays & Thursdays @ 6:30 PM PDT. Bonus streams elsewhen!

Reply 13688 of 22114, by bjwil1991

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Had to replace the FDD on my ThinkPad 380D again (would throw a general read error and track 0 bad when attempting to do a dir A: or format A: command).

Discord: https://discord.gg/U5dJw7x
Systems from the Compaq Portable 1 to FX-8350
Twitch: https://twitch.tv/retropcuser

Reply 13689 of 22114, by henryVK

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I've been considering getting a gamepad or a joystick with microswitches for DOS arcade games.

Anybody have any idea if this Competition Pro gameport version is any good? I've never owned one of them clicky joysticks.

CompetitionPro_GameportPC.jpg

Reply 13690 of 22114, by 4dam

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Reinstalling Windows 98 after 1000 errors with installing games. Don't ever install unofficial SP3 for windows 98, just don't do it if you have normal PII/PIII computer. You don;t need this and it will only give you more errors and bad performance in games...

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Reply 13691 of 22114, by bjwil1991

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I normally install the DST fix from the SP3 software and nothing else.

Discord: https://discord.gg/U5dJw7x
Systems from the Compaq Portable 1 to FX-8350
Twitch: https://twitch.tv/retropcuser

Reply 13692 of 22114, by derSammler

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liqmat wrote:

Can we please get the sexy Hollywood wide shot with the system on?

IMG_20191217_142700735.jpg
IMG_20191217_142638962.jpg

The first one got a bit blurry...

Still have to turn the battery into an empty dummy. It's not that trivial actually, as the weight of the battery is important. Without the weight of the battery, the notebook easily tips over. So I have to fill the empty battery case with something heavy.

Reply 13694 of 22114, by Horun

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Fixed an issue with a 286 board. Started tearing down an Antec 480w supply from 2003 with some low voltages, has a few bad caps from visual inspection. Hmmm.... so where can I get 2200uF 16v caps that are only 8mm wide (they are 8mm x 25mm) ? Checked around and 10mm are the smallest in diameter but with 6 in a group that extra width will not fit.

Hate posting a reply and then have to edit it because it made no sense 😁 First computer was an IBM 3270 workstation with CGA monitor.

Reply 13695 of 22114, by GigAHerZ

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Took out my Pentium MMX @ 3.5x75MHz and installed a 10GB 7200rpm Maxtor HDD.
The previously used CF card became a secondary slave together with CD drive.

Then installed Windows 98SE and spent most of the night figuring out, how to enable DMA on HDD. But as it seems, if you use any higher UDMA mode than UDMA-66, the DMA checkbox in device manager is not going to stay ticked, while the DMA really seems to be enabled. (Working currently at UDMA-100) The CD drive works at UDMA-33, and the DMA checkbox stays ticked.

Any absolutely reliable way to check the current active transfer mode under windows 98? As far as i tried different tools from Everest to some weird random things, everything showed HDD running in UDMA-100 mode. Any hints are appreciated. 😀

"640K ought to be enough for anybody." - And i intend to get every last bit out of it even after loading every damn driver!

Reply 13696 of 22114, by appiah4

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GigAHerZ wrote:
Took out my Pentium MMX @ 3.5x75MHz and installed a 10GB 7200rpm Maxtor HDD. The previously used CF card became a secondary slav […]
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Took out my Pentium MMX @ 3.5x75MHz and installed a 10GB 7200rpm Maxtor HDD.
The previously used CF card became a secondary slave together with CD drive.

Then installed Windows 98SE and spent most of the night figuring out, how to enable DMA on HDD. But as it seems, if you use any higher UDMA mode than UDMA-66, the DMA checkbox in device manager is not going to stay ticked, while the DMA really seems to be enabled. (Working currently at UDMA-100) The CD drive works at UDMA-33, and the DMA checkbox stays ticked.

Any absolutely reliable way to check the current active transfer mode under windows 98? As far as i tried different tools from Everest to some weird random things, everything showed HDD running in UDMA-100 mode. Any hints are appreciated. 😀

Just use HDD testing software. Try HDTach to test burst speeds and Threadmark to test CPU utilization.

Retronautics: A digital gallery of my retro computers, hardware and projects.

Reply 13697 of 22114, by GigAHerZ

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@appiah4, i tried some hdd benchmarking software too. Cached reads were well over 20MB/s, which would imply, it's in DMA mode. (PIO goes, on best case, up to 16.6MB/s, AFAIK)

I quickly didn't find HDTach that would be compatible with Win98, but i'll try to find one again later.

"640K ought to be enough for anybody." - And i intend to get every last bit out of it even after loading every damn driver!

Reply 13699 of 22114, by GigAHerZ

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Seems like just another quirk of Windows 9x, that wasted maybe 3-4 hours of my time to truly understand. (Oh, how many times i reinstalled and searched for all kinds of different IDE controller drivers and stuff like that...)

"640K ought to be enough for anybody." - And i intend to get every last bit out of it even after loading every damn driver!