Re: What retro activity did you get up to today?

Posted on 2015-09-10, 23:02

by

by Skyscraper

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Sometimes its hard to understand why things doesnt work. I replaced the battery in the 286-16 system with NEAT chipset, everything worked fine and the new battery had no issues with holding charge. After that success I though that I should upgrade the memory. I used SIMM slots in the SIPP sockets …

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Re: What retro activity did you get up to today?

Posted on 2015-09-10, 20:21

by

by Skyscraper

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I replaced the battery on my PA-5000 NEAT chipset 286 motherboard :) I did a quick and dirty but pretty neat mod so I can replace the battery without soldering. With a little distance between the board and the battery I also hope that there will be less chance of the board beeing damaged by …

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Re: LuckyStar LS486E rev.C2 and Cyrix 5x86@133

Posted on 2015-09-09, 19:18

by

by Skyscraper

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Remember that you need a jumper on the turbo switch header if you want the system running at full speed otherwise the system will be rather slow 😀

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Re: LuckyStar LS486E rev.C2 and Cyrix 5x86@133

Posted on 2015-09-09, 17:54

by

by Skyscraper

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Here is the BIOS dump from one of my C1 revsion boards (A second arrived from Ukraine today but I have not tested it yet) Here are a few disclamers. This BIOS was dumped using my very flaky AMD 5x86p75 CPU which would not run stable at 133 MHz @3V not on this board nor on the Asus PVI-486SP3 which …

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Re: What retro activity did you get up to today?

Posted on 2015-09-09, 16:46

by

by Skyscraper

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Im trying to sort out an Ebay auction I won, the shipping cost wasnt specified and I think my hovercraft is full of eels :lol: Success! I got a somewhat grumpy message with the Ebay invoice in German. I will not complain at all, the shipping cost was very reasonable and the seller will get a good …

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Re: Usual RAM sizes back in the 386/486/Pentium years

Posted on 2015-09-09, 16:35

by

by Skyscraper

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

My IBM 55SX 386SX-16 had 4MB in the early 90s, the 486 SX33 that replaced it had 8MB. The late 1994 AMD DX2-80 system also had 8MB at the start, I do not remember if I ever got more before I upgraded to a Pentium. All my Pentium and Pentium 2 systems had insane amounts of memory for the time so they …

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Re: Bought these (retro) hardware today

Posted on 2015-09-09, 15:52

by

by Skyscraper

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I posted images of a box full of memory I won on the Swedish Ebay clone Tradera a few days ago. How much memory do you get for ~30 Euro? Quite a lot it seems... Filename Inside_the_memory_box.JPG File size 4.31 MiB Views 5856 views

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Re: LuckyStar LS486E rev.C2 and Cyrix 5x86@133

Posted on 2015-09-09, 15:48

by

by Skyscraper

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have the older C1 revision of this board. If noone with the C2 or D1 revison has a BIOS to share I could fix a dump of my boards BIOS, while old it still supports the AMD 5x86 and HDDs larger than 2.1GB.

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Re: What retro activity did you get up to today?

Posted on 2015-09-08, 16:50

by

by Skyscraper

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Im trying to sort out an Ebay auction I won, the shipping cost wasnt specified and I think my hovercraft is full of eels 🤣

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Re: Rechargeable drum battery

Posted on 2015-09-07, 20:52

by

by Skyscraper

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Stojke wrote: +20$ other costs 😀 External battery requires 4.5V? $1.5 with shipping, if it dosnt get through the net, try again 😀 http://www.ebay.co.uk/itm/1x-Ni-MH-80mAh-3-6V … =item5d5c9f00a5

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Re: Rechargeable drum battery

Posted on 2015-09-07, 20:22

by

by Skyscraper

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

A recharagble drum battery is $3 on Ebay 😀

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Re: AWE32 CT2760 & 98SE

Posted on 2015-09-06, 20:45

by

by Skyscraper

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Congratulations! You have bought the best (or second best depending on who you ask) AWE32 :) Here is a link to the jumper settings for the card. It dosnt look like you can disable the CD-Rom interface but only one should be enabled at a time. http://stason.org/TULARC/pc/sound-cards-multimedia/ …

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Re: Help identify

Posted on 2015-09-06, 19:21

by

by Skyscraper

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Im pretty sure I saw that board on Ebay for a fair price recently 😀 Did you buy it?

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Re: Bought these (retro) hardware today

Posted on 2015-09-06, 18:20

by

by Skyscraper

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I just won these, 31 Euro + 7 Euro shipping. No more information than the images. But I see cache chips, flash chips, 30 pin SIMM modules and other nice stuff so with luck it will end up being a good buy. New_memory1.jpg New_memory2.jpg I bet its an ESD protected blanket :P Its lucky memory modules …

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Re: Hidden Power in AMDs 486DX4 SV8B WB

Posted on 2015-09-06, 13:58

by

by Skyscraper

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Some AMD 486 DX4-100 CPUs supports 2x and 3X multipliers, some supports 3x and 4x multipliers. If you have 16KB L1 cache then your CPU is the same as a 5x86p75, if you have 8KB then its not the same even if its WB cache.

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Re: Help with identifying a 286 "PA-5000" motherboard from 1988.

Posted on 2015-09-06, 13:14

by

by Skyscraper

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

This looks like a pretty well laid out 286 board. I am not totally familiar wit the NEAT chipset, but according to the manual it is designed for 12 and 16MHz. http://www.datasheetarchive.com/dl/Scans-003/Scans-0076925.pdf The 16MHz is also stamped into the ICs, and they are socketted. To me this is …

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Help with identifying a 286 "PA-5000" motherboard from 1988.

Posted on 2015-09-06, 10:36

by

by Skyscraper

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I finally dismantled my 286 system to replace the battery before it starts leaking. I took the opportunity to take a good picture of the board. I can not find any information about the board at all. The board is marked "PA-5000" and it is revision F. The chipset seems to be Chips and Technologies …

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Re: What retro activity did you get up to today?

Posted on 2015-09-05, 17:37

by

by Skyscraper

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I switched motherboard to a "works or not but at least posts" Lucky Star 486E rev C1 from Ukraine :) Some things I have noticed so far: The board wont keep BIOS settings with a CR2032 battery that reads 3.15V on my MM but keeps BIOS settings with one that reads 3.31V. I first had abyssal performance …

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Re: An interesting dilemma involving a brand new AT form factor case

Posted on 2015-09-05, 12:58

by

by Skyscraper

in Milliways

in Milliways

Yes, or find a replacement bay cover. Another option is mounting the switches on a rear slot cover. You then have to reach around the back, but it's another option. Skyscraper, when you say mod a fan controller, do have any details? I ran into this issue recently, didn't want to drill holes into …

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Re: What retro activity did you get up to today?

Posted on 2015-09-05, 11:50

by

by Skyscraper

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The adventures with the Asus PVI-486 SP3 rev 1.21 and the AMD DX4 100 continues. I added a AWE64 to the system and everything seemed to be working well except Tyrian, it would not run except with "BIOS deaults" loaded. If I used "Setup defaults" + optimized memory settings it would crash at once, …

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