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Re: ABIT AB-AH4 / AB-AH4T Write Back L1 Cache

Posted on 2023-03-03, 15:10

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have a QDI board with the same chipset and with 5x86 running at 3x50MHz. So this thread is very interesting to me. Question about the speedsys' graph - shouldn't we see the blue line (write speed) also represent difference between L1 and L2 cache "space" when write-back is enabled? Wow - are you …

Re: ABIT AB-AH4 / AB-AH4T Write Back L1 Cache

Posted on 2023-03-02, 20:39

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have a QDI board with the same chipset and with 5x86 running at 3x50MHz. So this thread is very interesting to me. Question about the speedsys' graph - shouldn't we see the blue line (write speed) also represent difference between L1 and L2 cache "space" when write-back is enabled?

Re: My Very Long Bus Adventure.

Posted on 2023-03-02, 18:39

in Marvin \ System Specs

in Marvin \ System Specs

Is the "Assign IRQ to VGA" also relevant to VLB graphics cards? That might also be one of the jumper's purpose.

Re: Opinion on running windows 95 on a 486DX4 100 with write back

Posted on 2023-03-02, 17:26

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have VLB based simple IO card doing DMA on my non-PCI 486. Is there any technical reason not to be able to do it even on ISA bus? It has DMA, too. (Maybe it just isn't as beneficial so in practice nobody's done it...) As i did find working drivers for this VLB IO card for DOS, i did confirm it …

Re: Opinion on running windows 95 on a 486DX4 100 with write back

Posted on 2023-02-27, 20:38

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

UDMA on a 486 is going to require a PCI IDE card unless you know of some 486 chipset that supports it for the onboard IDE? I have VLB based simple IO card doing DMA on my non-PCI 486. Is there any technical reason not to be able to do it even on ISA bus? It has DMA, too. (Maybe it just isn't as …

Re: Opinion on running windows 95 on a 486DX4 100 with write back

Posted on 2023-02-27, 19:46

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

As @douglar has mentioned many times, i also think this setup would work great even on lower speed 486s: Windows 95 (OSR 2.5, because why not?), without IE4 desktop update, with UDMA enabled. UDMA really is an important keyword on those machines! UDMA on a 486 is going to require a PCI IDE card …

Re: Opinion on running windows 95 on a 486DX4 100 with write back

Posted on 2023-02-27, 14:47

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

As @douglar has mentioned many times, i also think this setup would work great even on lower speed 486s: Windows 95 (OSR 2.5, because why not?), without IE4 desktop update, with UDMA enabled. UDMA really is an important keyword on those machines!

Re: How about a MR-BIOS ROM file repository?

Posted on 2023-02-27, 09:21

in Marvin \ Software

in Marvin \ Software

Does anyone have the MrBIOS image for the SIS85c471 chipset? I'm searching for it too. MR BIOS does exist for that chipset, but maybe lost forever... My googleing skills have not been enough... :( It would be absolutely amazing, if someone would have MR BIOS for SIS 85C471 based chipsets. …

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

Posted on 2023-02-26, 18:04

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

On a 86box VM, i tried out installation of Windows 95 D 1.6. Looks great! No massive amount of updates needed after installation of the OS. Gonna be my go-to approach from now on.

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

Posted on 2023-02-16, 07:42

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have also an enormous syringe of paste from aliexpress. Keyword is "GD900". Bought it few years ago after doing a bit of research. This is actually benchmarked by many people and shows very good results - especially for the price. Tech YES City as an example: https://www.youtube.com/watch?v= …

Re: Pentium MMX 233 aiming for the stars!

Posted on 2023-02-15, 13:34

in Marvin \ Video

in Marvin \ Video

My MX-400 has only VGA. And yes, I use it together with a very nice high refresh rate Sony Trinitron CRT. (CPD-G200p) IMG_20220401_200612.jpgIMG_20220401_200626.jpg With such memory it should be a MX200, or am I wrong? The card identifies itself as MX400, just like the sticker says. Maybe this is …

Re: Which sound card for a 386sx?

Posted on 2023-02-12, 19:14

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

In general, i've come to love ESS cards - no bugs, very valid FM synth and on games that are aware of it can do even more with that synth.

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

Posted on 2023-02-06, 20:21

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Love it too :) It's like a huge brick and it's in REALLY good condition for being this old. It looks amazing. I had some kind of similar 286 in my childhood as our first computer. It was not from an IBM... Can you make a picture from the back of the case? Does it have integrated FDD/HDD controller …

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

Posted on 2023-02-06, 10:18

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Over the weekend, took my 486 apart and once-and-for-all got it stable and fully functional. It's a VLB based machine, running at 3x50MHz. The io controller and S3 Trio32 are fine with 50MHz VLB bus, but for RAM i had to go from "Fastest" -> "Faster" -> "Slower" setting for timings, otherwise it …

Re: Windows 95A on a 386SX/Ryzen 9

Posted on 2023-01-23, 13:36

in Marvin \ System Specs

in Marvin \ System Specs

I can report that Windows 95A is working flawlessly on a Ryzen 9 configuration* Boot time is about 7 seconds with SATA drive in DOS mode. 3 min Youtube video with Windows 95 and some benchmarks I was able to copy the same Windows instalation on a 840MB drive and using an ISA - IDE card to boot it …

Re: Bought these (retro) hardware today

Posted on 2023-01-20, 15:09

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Just received an CT3670 AWE32 from one local auction. It came with 2x4MB SIMM memory sticks and it's been modified to have 2xRCA for line-in and 2xRCA for line out. Looks nice, to be honest... Was lucky to get it for about 16€ + 3€ shipping.

Re: Cystal clock 40mhz 386

Posted on 2022-12-04, 20:48

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

On close inspection of picture of your board and the one on theretroweb for identical board it really seems they have 80Mhz crystal while you got 40Mhz. If you get to replace the crystal it may be worth getting both 80Mhz and 90Mhz one for a small overclock. For higher OC cache faster than 20ns and …

Re: Slide-in standoffs for AT motherbaords - where to buy?

Posted on 2022-12-04, 19:55

in Milliways

in Milliways

Edit: they were the right ones for old 286/286/486 AT cases? Just to be 100% sure. Yes, exactly. The ones that actually hold the board in place (the "slide-in" part) instead of just letting pcb to rest on some flat surface. Keywords, that work for me, are "nylon", "standoff", "motherboard" in any …

Re: Slide-in standoffs for AT motherbaords - where to buy?

Posted on 2022-12-04, 13:54

in Milliways

in Milliways

I bought a pack of 50 or 100 from aliexpress some time ago, if i remember correctly. Just did a quick search with keywords "motherboard standoff", and on page 9, i found 50-pack of the ones that slide in. "50pcs Plastic Nylon Reverse Locking Circuit Board Support Hexagon Pillar Standoff for Hole 4. …

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

Posted on 2022-11-26, 16:30

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Got this! External SCSI SyQuest 230MB 3.5" drive. Full set, will archive the floppies unless they are already archived. For whatever reason, it also seems to include coincidentally 230MB MO disk. I have an internal 650MB MO drive - i wonder, if it would work with that? At last i got to it to check …

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