Re: FastDoom. A new Doom port for DOS, optimized to be as fast as possible for 386/486 personal computers!

Posted on 2023-05-26, 08:26

by

by Nemo1985

in Release Announcements

in Release Announcements

If there is no sound card installed then there is no need to disable sound and music, it's already disabled. The issue comes when a sound card is installed and sound or music device selected. Sound cards use interrupts in order to work, and that causes sound code to be executed whenever the sound …

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Re: FastDoom. A new Doom port for DOS, optimized to be as fast as possible for 386/486 personal computers!

Posted on 2023-05-26, 07:52

by

by Nemo1985

in Release Announcements

in Release Announcements

The Cyrix 486 architecture is a little worse compared to the Intel 486, there are multiple instructions that are slower, that's why is usually slower. And the difference between Intel and AMD 486 comes when AMD had to remove the ICE code, I've seen slower performance on those "N" cpu's. Also the …

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Re: FastDoom. A new Doom port for DOS, optimized to be as fast as possible for 386/486 personal computers!

Posted on 2023-05-26, 07:20

by

by Nemo1985

in Release Announcements

in Release Announcements

Intel doubled the L1 cache when they launched the DX4 chips. AMD (and I assume Cyrix as well) did not AFAIK, it was only with the 5x86 that the cache was doubled, which should explain the performance discrepancy. I didn't know. So we have Amd and Intel with the very same architecture but different …

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Re: FastDoom. A new Doom port for DOS, optimized to be as fast as possible for 386/486 personal computers!

Posted on 2023-05-26, 04:23

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by Nemo1985

in Release Announcements

in Release Announcements

Here are the tests with 486, I used the very same pc of last time(MB: Biostar MB-8433UUD-rev2, 256kb cache, 32mb, s3 virge dx 4mb) results in realticks (lower score more fps), used the switch as following fdoom -timedemo demo3 -*cpuswitch*: photo_2023-05-26_06-22-49.jpg I still don't understand why …

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Re: FastDoom. A new Doom port for DOS, optimized to be as fast as possible for 386/486 personal computers!

Posted on 2023-05-25, 16:05

by

by Nemo1985

in Release Announcements

in Release Announcements

Please @CODOR try this bugfix executable, I've tried it on my SB16 and it works now. BTW this executable includes a new configurable option, now it's possible to use render code for each CPU architecture. This allows for more performance on the selected CPU. The available command lines are: -umc486 …

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Re: SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod

Posted on 2023-05-15, 22:29

by

by Nemo1985

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Transistors are on the other side, what you see is the back. Thick wafer and luck. K7 had fragile thin weak wafers crumbing at the slightest twist of radiator. I saw multiple tens, maybe over a hundred broken AMD chips with slightly cracked corners. Intel socket 370 Coppermines were bulletproof. …

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Re: SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod

Posted on 2023-05-15, 22:01

by

by Nemo1985

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

What the explanation can be? I mean if there are transistors there it shouldn't work. The same was happening with socket 462 cpus with small chips on the die they still worked fine. Taking another look at the picture I also noticed that 2 capacitors are really in bad shape.

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Re: SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod

Posted on 2023-05-15, 16:56

by

by Nemo1985

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Impressive

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Re: A deceitful Pioneer slot in drive?

Posted on 2023-05-13, 14:59

by

by Nemo1985

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Not really deceitful tho...the DR-A14S (Pioneer branded) & the DR-704S (OEM) are the same base units but with different bezels, so firmware may be shared also - they even have the same (DR-AI4S headed) manual (which also covers the DR-714S) So it's a 36x? Why it doesn't read a full disc faster than …

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Re: A deceitful Pioneer slot in drive?

Posted on 2023-05-13, 08:27

by

by Nemo1985

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

This drive seems very old, as if it's from the 90s. I'm more familiar with the DVD models, also. Those were popular in the RPC-1 "scene" of firmware modders. Could well be possible that the firmware has no support for determining/setting drive speed. I had no luck with a DVD version, either. I see, …

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A deceitful Pioneer slot in drive?

Posted on 2023-05-12, 18:22

by

by Nemo1985

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I recently bought a Pioneer DR-704S: 001b.jpg but when I connected it to the computer it was identified as a DR-A14S, I searched for this model drive and it proved to be a not so reliable more recent Pioneer drive rated as 36x. 001.jpg So I took off the front panel and: 002.jpg Two buttons ah? It …

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Re: Shipping from US to Europe why so expensive?

Posted on 2023-05-07, 04:03

by

by Nemo1985

in Milliways

in Milliways

Well for 2 sticks of ram it would be the perfect solution... Hah... International registered mail. That would run $50+ Registered mail is meant to be able to track every single step of the way... a signature is required at every handoff and at delivery. First class international should be fine. For …

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Re: Shipping from US to Europe why so expensive?

Posted on 2023-05-07, 03:35

by

by Nemo1985

in Milliways

in Milliways

There is registered mail in the USA.... That requires signatures all along the way and is something like $10+. Have only used it like once or twice. USPS priority also comes with tracking. And if you ship through eBay, even first class has free tracking. Shipping overseas is quite expensive though. …

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Re: Shipping from US to Europe why so expensive?

Posted on 2023-05-07, 02:59

by

by Nemo1985

in Milliways

in Milliways

Interestingly here in Italy it's no problem, as long as it's the premium "registered" service (that used to be the only option for legal matters) as opposed to the basic tracking on priority* mail that's much more simplified and unreliable! * for quite a while it's actually become the basic postal …

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Re: Shipping from US to Europe why so expensive?

Posted on 2023-05-07, 00:52

by

by Nemo1985

in Milliways

in Milliways

Ebay will not accept a letter as safe shipment and will instantly reimburse the buyer Interestingly here in Italy it's no problem, as long as it's the premium "registered" service (that used to be the only option for legal matters) as opposed to the basic tracking on priority* mail that's much more …

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Re: Shipping from US to Europe why so expensive?

Posted on 2023-05-06, 18:24

by

by Nemo1985

in Milliways

in Milliways

since I get the warning that I will have to pay them when I receive the package... I think then it's not "eBay Global Shipping Program", because otherwise they will automatically collect the custom duties and it's insane IMHO, because they calculate the custom duties not just on the item price, but …

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Re: Shipping from US to Europe why so expensive?

Posted on 2023-05-06, 18:19

by

by Nemo1985

in Milliways

in Milliways

because as a seller you have to obligation to make sure that the stuff arrives in one piece. If they send it via letter they are responsible it gets destroyed in transit. Ebay will not accept a letter as safe shipment and will instantly reimburse the buyer, no matter whether it got really destroyed …

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Re: Shipping from US to Europe why so expensive?

Posted on 2023-05-06, 18:13

by

by Nemo1985

in Milliways

in Milliways

I don't know, the seller shipping option is: "eBay International Shipping" but it doesn't seem to be paid duties since I get the warning that I will have to pay them when I receive the package... Out of curiosity I checked from my side and a 250gr letter shipping cost is around €15, while the …

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Shipping from US to Europe why so expensive?

Posted on 2023-05-06, 17:00

by

by Nemo1985

in Milliways

in Milliways

I found some ram sticks from an american seller at a very nice price. The main problem is that the shipping cost is higher than the value of the package... Two sticks of ram shouldn't be that much cumbersome so a registered letter should be enough but the seller only ships them as package. Is it …

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Re: Problem with floppy 5.25"

Posted on 2023-05-05, 09:46

by

by Nemo1985

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It won't be an easy task even more if you can't identify what floppy drive it is. I hope some other vogonians will be able to help you. Deunan has come, you are in the best hands now 😀

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