Re: 486dx4-100 setup questions
Posted on 2020-01-13, 03:39
Also, My 486dx4-100 CPU only works with jumpers set for 5v. But the CPU is a 3.3 volt I think. What is better write-thru or write back ? I both types of CPU’s
Re: 486dx4-100 setup questions
Posted on 2020-01-13, 03:20
Well, the posts reads the “P24D” is only for the “Intel-486dx2 CPU” Is it also available on the 486dx4 ? I will have to inspect my CPU for write-thru or write-back markings.
Re: 486 hangs on posts
Posted on 2020-01-13, 03:03
Well, it is definitely a cache problem. I have been able to set it up with a working DOS hard drive and dos tools. The dos tools report that the external cache is non-existent. I only have 16kb of cache by default. I checked the traces and found one trace solder weld to be connecting two jumpers as …
486dx4-100 setup questions
Posted on 2020-01-13, 02:55
What Jumper settings should I use on a Intel 486dx4-100 motherboard setup ? Jumper settings: 1) P24D ( enable / others ) 2) Write-thru or Write-back ?
Re: 486 hangs on posts
Posted on 2020-01-12, 23:22
I can't imagine, that an empty cmos battery causes l2 cache not being recognized. But it's weird, before 256kb were shown, and now not. Could be indeed the tag ram. What was the tag ram, that you did take out? Unability of performing fdisk seems totally unrelated to L2 cache though. Yes, This …
Need BIOS for Gigabyte GA-486vs motherboard.
Posted on 2020-01-12, 22:59
I am trying to resolve problems with my Gigabyte GA-486vs motherboard. So I think I will start with a fresh bios. As I do NOT know the history of this motherboard and the bios is acting strange. Does anyone know where I can get this bios ?
Re: 486 hangs on posts
Posted on 2020-01-12, 22:16
I did. I am going to try adding an external battery. I checked the CMOS battery with a Multimeter and it tested okay at 3.5 volts. Which should be enough. But it’s old and there maybe a problem.
Re: 486 hangs on posts
Posted on 2020-01-12, 22:05
So I replaced the cache chips and now it boots but at posts the screen reads that NO cache is installed. I used 9 new chips from “alliance” -15ns , 8 chips for the cache and 1 for the tag. All the same type of chips. Is that okay? Or do I need a special tag chip ? Also, I booted of a DOS boot disk …
Re: 486 hangs on posts
Posted on 2020-01-12, 19:50
The Serpent Rider wrote on 2020-01-12, 18:33: If it won't help, then it's time for water torture. What is that ?
Re: Bought these (retro) hardware today
Posted on 2020-01-12, 19:47
I am a sucker for Aluminum cases. I am going to use this for a Terratec Audio studio build. Going to add a Terratec EWS-88MT and DMX 6 Fire 24/96. Going to look Awesome.
Re: 486 hangs on posts
Posted on 2020-01-12, 17:58
Yeah, I assumed it was the cache. So I am going to start by replacing the cache with a new set.
Re: Macintosh Color Classic ( extreme )
Posted on 2020-01-12, 17:40
I don’t know but that is where I would start is to get the logic board fixed.
Re: 486 hangs on posts
Posted on 2020-01-12, 15:36
Disruptor wrote on 2020-01-11, 22:24: What happens when you turn off L2 in BIOS? Yes, removed all cards but video. I disabled external cache in bios and now it boots from floppy drive okay but slow. Now what? What is wrong if disabling L1 cache fixes the boot problem?
Re: 486 hangs on posts
Posted on 2020-01-11, 18:35
My 486 motherboard hangs on posts. This is the point where the bios displays the cache. So i think it maybe a cache problem. What do you think ? Motherboard is a gigabyte ga-486vs Is the behaviour the same, when you remove all cards (except VGA), floppy and ide cable? EDIT: I see Floppy and …
486 cache problems
Posted on 2020-01-11, 16:20
My 486 motherboard hangs on posts. This is the point where the bios displays the cache. So i think it maybe a cache problem. What do you think ? Motherboard is a gigabyte ga-486vs
Jumper setting for Sound Blaster Pro 2.0 ( CT1600 )
Posted on 2020-01-10, 17:51
What are the best jumper settings for this Sound Blaster Pro 2.0 ( CT1600 ) ? Basically ( DMA and DRQ and DACK ) . Manual: https://stason.org/TULARC/pc/sound-cards-mult … R-PRO-2-CT.html
Re: 486 Multimedia dream build ( 1994 )
Posted on 2020-01-09, 23:45
The Computer case just arrived today. Wow !...This is the best AT case I ever had !... It is made of thick steel construction like my HP Kayak computer. I can wait to start putting this 486 computer together. This is a great construction case for my Ultimate 486 build. I am only going to put my best …
Re: Why don’t PC parts work in a Mac ?
Posted on 2020-01-09, 14:46
The NEW iPads are Fast ! Some are faster than the quad core intel MacBooks.
Re: Welcome to the updated VOGONS
Posted on 2020-01-09, 14:43
I don’t like it. It does not work well with my iPad. The buttons don’t always work. This Java stuff does not always work. I think you should go back to the “search box field.”
Re: Why don’t PC parts work in a Mac ?
Posted on 2020-01-09, 14:38
Personally, I don’t know enough to have a preference between Motorola and Intel. They both work fine for me. Obviously it had more to do with the customer loyalty base. At the time it was Win/tel vs. Apple/Motorola. And SGI , Sun and HP used RISC CPU’s with UNIX operating systems. I like the …
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