Re: Why no 486 to 386 socket adapter?

Posted on 2017-08-25, 14:20

by

by gerwin

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I hope to reverse engineer and create a copy from this one... maybe even make a socket version... rather than QFP. Have you tested this to work? It is very interesting indeed. It seems to be a relatively simple device. But what is the deal with the two extra rows of contacts within the socket 3 …

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Re: Researching new Windows XP build

Posted on 2017-08-23, 22:00

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by gerwin

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Falcosoft wrote: Would you test your i3 with 16x multiplier to see how its TSC behaves? You can use my tool (it's only 4KB and no installation is required). Of course. Here are the results at 16.0x multiplier (Both cores enabled). Seems like good news right? Just that 1600 MHz is not particularly …

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Re: Researching new Windows XP build

Posted on 2017-08-23, 21:02

by

by gerwin

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The Ivy Bridge i5-3570K is about as fast as you can get without getting exotic (socket 2011). Fast, no hyperthreading, and the price has come down a lot. The main benefit of the i5-3570K might not be its speed but its underclocking potential. I have been reading that some XP games might not like an …

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Re: Tie Fighter floppy version VESA support (and Pentium)

Posted on 2017-08-23, 01:16

by

by gerwin

in Marvin \ Software

in Marvin \ Software

I don't know by head, but I wrote MCGA to differentiate from the 640x480 16 color mode which is also referred to as VGA. (this 16 color mode has nothing to do with TIE Fighter.) Most 320x200 games use https://en.wikipedia.org/wiki/Mode_13h, But some use 320x200 Mode-X. Not sure if Keropi is talking …

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Re: 386 upgrade kits and the Transcomputer 486HPi - Am5x86-160 anyone?

Posted on 2017-08-22, 22:26

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by gerwin

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Does it work with an Am5x86-133/160? It does... can set clock multiplier to x2, x3, and x4... ran it on one of the Forex boards I have kickin around... Interesting stuff. Are you sure you have that many multiplier options. AFAIK there is only one multiplier select pin ( R17 CLKMUL ) on the am486/ …

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Re: 486 VLB UMC-Chipset, what is it?

Posted on 2017-08-22, 18:59

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by gerwin

in Marvin \ System Specs

in Marvin \ System Specs

Good to hear that this topic was helpful for you. I suppose quite a few typical 486 problems and solutions were encountered during the tweaking of this 486. Makes me wonder, which problem did I miss out on. Well... Fake cache for example ;). If you have time, please share some more details and/or …

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Re: Tie Fighter floppy version VESA support (and Pentium)

Posted on 2017-08-22, 01:41

by

by gerwin

in Marvin \ Software

in Marvin \ Software

Floppy version is MCGA only: 320x200 pixels. It requires EMS memory. CD version can switch from 320x200 to 640x480. It is a protected mode game.

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Re: Batch scripting - Help with choice command

Posted on 2017-08-02, 17:15

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by gerwin

in DOSBox General

in DOSBox General

In an example I have here it is like this for keys 1,2,3,4,5,s,x: "CHOICE /C:12345sx /N" There are different implementations of 'choice' in Windows. Edit: removed attachment, did not notice this is DosBox specific.

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Re: VIA C3 Nehemiah vs. Coppermine(-128) and Tualatin

Posted on 2017-08-01, 22:45

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by gerwin

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The intel motherboard autodetects the CPU to fit with a 100MHz bus. See: SR440BX review on vogons On the MS6905 slotket, the only Bus speed related jumper is for forcing a 100MHz bus request. Three options: 1) Modify motherboard like I did. 2) Modify slotket to do the same (preferable) (3) …

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Re: SC8500 sound card - what does it do?

Posted on 2017-08-01, 22:33

by

by gerwin

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

There is also a "PowerWave 32 Pro" out there with just the CS9233 on it. That card's driver would be good to have. Found the PowerWave 32 Pro driver here: ftp://ftp.dyu.edu.tw/pub/Hardware/stuff/multimedia/PowerWave32/ Like I said, it is a midi-only ISA card based on the CS9233. The DOS driver name …

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Re: SC8500 sound card - what does it do?

Posted on 2017-08-01, 21:15

by

by gerwin

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

This SC8000 has quite a diferent chipset compared to any SC8500. Drivers are badly needed for both of the cards but it seems impossible to find them. I always wondered if it would be possible to make a standalone SAM9233/CS9233 DOS initializer tool. By maybe running the Terratec Maestro 32/96 driver …

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Re: PS/2 to Microsoft Serialmouse Adapter Converter

Posted on 2017-08-01, 14:03

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by gerwin

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

tabm0de wrote: But sadly im not that good with electronics so it would be nice if there is like a "stupid" instructions where stuff goes ( the right way also ), or it could be something i have missed in this forum. I made an illustration that may help, it is halfway page 8 of this topic. Here it is …

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Re: Pentium 4 with ISA

Posted on 2017-07-30, 00:00

by

by gerwin

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The way I understood it; Creative labs could not get a SB16 software emulation ready. Put their bets on the AWE64D with SB-Link instead, then urged motherboard makers to support the SB-Link interface. Around that time they sued and then bought Ensoniq. Ensoniq had their AudioPCI with legacy software …

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Re: Pentium 4 with ISA

Posted on 2017-07-29, 12:11

by

by gerwin

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

You may be talking about something different. I meant to say that at full processor speed the SB16 emulation was fine. Then disabling L1 cache on such a fast system gives a 486 like system speed, which is useful in DOS. It is with L1 disabled that the SB16 emulation became garbled.

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Re: Pentium 4 with ISA

Posted on 2017-07-29, 02:13

by

by gerwin

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Some PCI sound caveat, that I could not find in my quick reading of this topic. I had this Athlon XP on a VIA motherboard with a SB-Live! PCI soundcard. The SB16 emulation actually worked, until you tried to disable the L1 cache for a CPU slowdown; then the SB16 emulation gave garbled output. …

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Re: CT1920 AWE32 Upgrade, Music volume

Posted on 2017-07-28, 23:23

by

by gerwin

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The analog circuitry of this card is on an analog 'island' on the PCB, which has a different ground plain. On the picture that is on the top right. You can see there is one small chip bridging over to this area, which should be a DAC (8 legs). Then between the DAC and the Jackplug is another chip …

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Re: Pentium 4 with ISA

Posted on 2017-07-28, 22:38

by

by gerwin

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Some PCI sound caveat, that I could not find in my quick reading of this topic. I had this Athlon XP on a VIA motherboard with a SB-Live! PCI soundcard. The SB16 emulation actually worked, until you tried to disable the L1 cache for a CPU slowdown; then the SB16 emulation gave garbled output. Pretty …

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Re: SetMul - Multiplier control for VIA C3 / AMD K6 Mobile / Cyrix 5x86

Posted on 2017-07-24, 13:54

by

by gerwin

in Release Announcements

in Release Announcements

lvader wrote: Unlike other Pentiums, here it changes the multiplier on the fly 3x Multi to 2x Multi without reboot? Had not tried that, but that is neat!

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Re: SetMul - Multiplier control for VIA C3 / AMD K6 Mobile / Cyrix 5x86

Posted on 2017-07-04, 15:29

by

by gerwin

in Release Announcements

in Release Announcements

@m5215tx The CPU is not unstable, since an unstable CPU would have locked up. What particular SetMul switch causes the problem, is it the downclocking or the disabling of caches? Note that this SetMul tool is experimental, it is based on CPU options mentioned in the old datasheets and observations …

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Re: Doom 'MBF' for DOS, Maintenance release 2.04

Posted on 2017-07-04, 00:22

by

by gerwin

in Release Announcements

in Release Announcements

Thanks for continuing this, 20 years later!!! .... Lee Killough Hey Lee!, good to see you signed in to vogons and dropped by here! We communicated briefly some months ago. I don't think I mentioned that here. So Welcome, and thank you as well. I can only appreciate the efforts and skill you put in …

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