Re: 4MB voodoo and k6-2 400MHz ?
Posted on 2020-03-26, 10:46
Branco wrote on 2020-03-24, 23:21: Yes I know. Sorry. Here goes a photo with the model to get you going. 🤣
Re: What is your opinion on these two old AT PSUs?
Posted on 2020-03-24, 22:02
Using the occasion I want to consult everyone on one more PSU. This particular one comes from my "new" M24 Olivetti, that sports Pentium and has strange format (I believe LPX). Nonetheless, I was thinking about recapping it, since I am using this computer as my main Socket 7 rig. I opened it today …
Re: What retro activity did you get up to today?
Posted on 2020-03-24, 19:49
imi wrote on 2020-03-24, 19:17: heh, is that the actual color, or just due to the heavy post processing? almost looks like tungsten lighting or a heater inside... looks very industrial ^^ He said "fired up", so it was meant literally.
Re: 386 DX40
Posted on 2020-03-24, 19:35
1st I am fighting with what CoffeeOne said, later I will try what Intel486dx33 suggested. But so far, no success. With IDE100 and 101 I did what you said. I closed IRQ 15. CD-ROM is connected to the sound card IDE on a separate cable. I am pasting my config.sys and autoexec.bat What is happening, …
Re: 386 DX40
Posted on 2020-03-24, 19:25
1st I am fighting with what CoffeeOne said, later I will try what Intel486dx33 suggested. But so far, no success. With IDE100 and 101 I did what you said. I closed IRQ 15. CD-ROM is connected to the sound card IDE on a separate cable. I am pasting my config.sys and autoexec.bat What is happening, …
Re: K6-2/400 on EpoX P55-TX2
Posted on 2020-03-24, 17:15
Hi everyone, Decided to build a system around this board: EpoX P55-TX2.jpg There are a lot of unknowns about the final configuration, but I'm aiming for a Riva128 PCI+ possibly dual VooDoo2 (if both my boards work). The CPU will be a K6-2 at 400MHz (66x6.0). The problem is related to the CPU …
Re: 4MB voodoo and k6-2 400MHz ?
Posted on 2020-03-24, 16:32
Keep in mind that there are two types of K6-2, the Chomper and the Chomper Extended (CXT). Only the Extended version has the 2x to 6x functionality. http://www.cpu-world.com/forum/viewtopic.php?p=148902 https://en.wikichip.org/wiki/amd/microarchitectures/k6-2 Can I use a k6-2+ ? Please deliver a …
Re: AMI Enterprise III
Posted on 2020-03-24, 16:24
I'm pretty sure the pdf manual for this motherboard is out there. AMI had it on their website until not too long ago. *edit* I found the manual, but strangely there isn't much in there about the cache ram. It doesn't even mention the tags. I have the manual, I've backed up locally all AMI …
Re: What is your opinion on these two old AT PSUs?
Posted on 2020-03-24, 16:19
Hi everyone! Recently, I've decided to take a look inside my two old AT PSUs (see attached photos). The reasons for that were: (i) I blew up my NOS Startech PS2POWER230 AT PSU :( (see my other post if interested: https://www.vogons.org/viewtopic.php?f=46&t=72750), (ii) I have still two other retro …
Re: My Big Red Switch 486
Posted on 2020-03-23, 23:46
Promise EIDE2300Plus: I had high hopes for the EIDE4030Plus caching controller instead, but just couldn't get the performance out of it. The EIDE2300Plus supports transfer modes up to PIO Mode 3 or MWDMA 2. No bus master DMA. Bases cycle times on system bus clock, i.e. PIO 3 should run at PIO 4 on …
Re: 386 DX40
Posted on 2020-03-23, 21:15
But what should I do with the other two jumpers next to IDE100 and IDE101 (IOCHRDY and IDEDIS). And how do I select IRQ 15, I close all the other jumpers (IRQ10-IRQ14) or I just close IRQ 15 jumper? Does anyone know a dos software that helps me scan the hardware I have and if the system sees the …
Re: Micro ATX 486 - what's the degree of interest?
Posted on 2020-03-23, 21:04
[...] Just a very small comment, as I don't really want to particpate in this thread :D: The initial posting was about having a test platform for 486-cpus, because many people still have some cpus, but no mainboards. So an AMD Elan board makes zero sense for that. The original post was for a board …
Re: Micro ATX 486 - what's the degree of interest?
Posted on 2020-03-22, 19:47
Perhaps an interesting angle on the FPGA front. I took a better look at my smallest 486 board today - a Digital Logic MSM586SEG It's PC/104 board, so 90x96mm. Why is this interesting? It's based around the AMD Elan 520, so basically an Am5x86 with build-in SDRAM memory controller and PCI bridge, …
Re: Compaq Prosignia 3080 / 486DX33
Posted on 2020-03-22, 19:42
OSkar000 wrote on 2020-03-22, 15:25: I copied the CD over the network 😉 That's cheating.
Re: Slowing down my first computer + Turbo & Case Questions
Posted on 2020-03-22, 19:31
But you can test it by yourself: 1) Configure optimal settings and disable Turbo (via jumper on the mainboard) and run a benchmark. 2) Use same BIOS configuration, but disable L1 cache (= internal cache, L2 cache does not matter with L1 disabled) and run a benchmark. I guess it is in the same range …
Re: Slowing down my first computer + Turbo & Case Questions
Posted on 2020-03-22, 19:21
Thanks. I will give the 100MHz a whirl! Can you tell me what exactly the Turbo button does? I can't even find such basic information about this, and I think this is my 4th post asking for any kind soul to chime in lol. I've googled a ton and it's always generic info like turbo button/mode "increase …
Re: 386 DX40
Posted on 2020-03-22, 18:25
Hey. Looks like my hobby is defined. I am a retro computer geek. I already wrote something about my Double Pentium 3 with Voodoo 5. Now I am playing with an old one. I never had something like that in my life. My first computer was actually Celeron 300A. So at first, I was quite scared of that …
Re: DS1287A
Posted on 2020-03-22, 17:37
the difference is the presence of the RCLR pin. The A part can be used anywhere that the non-A can since you have an A part already, grab an A from digikey https://www.digikey.com/product-detail/en/maxim-integrated/DS12887A/DS12887A-ND/956873 I don't have an A part already, I was only interested. …
Re: DS1287A
Posted on 2020-03-22, 14:43
maxtherabbit wrote on 2020-03-22, 02:06: Why not just buy a brand new DS12887+ from digikey? Anybody knows the difference between DS12887A+ and DS12887+ ?
Re: Compaq Prosignia 3080 / 486DX33
Posted on 2020-03-22, 14:27
OS = Dos 6.22 and WFW 3.11 The installation program I'm reffering to is the setup for the soundcard on the CD I got with it so it should be the original drivers from 1995. Disabling the IDE-port on the card is on the list of things that I should do but I have to figure out how to do it first. As …
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