Re: XT/CGA laptop dissection

Posted on 2015-08-16, 16:03

by

by matze79

in Marvin \ System Specs

in Marvin \ System Specs

The Schematic is RGB Digital to Analog Signals so you can Input to a GBS 8220 Video Converter Board or AD724 NTSC/PAL Encoder. http://www.jammaboards.com/arcade_manuals/GBS-8220_CGA_to_VGA_HD-Converter.pdf You can even upgrade your laptop to backlight, by adding EL Foil if this is possible (Space …

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Re: Speedsys 4.78 weird MHz

Posted on 2015-08-16, 15:59

by

by matze79

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

This is just a Bug. Speedsys shows only 17Mhz but my DRx2 Cyrix 486 was running 50Mhz (2x25). Failling Powersupply killed cpu 😒

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Re: XT/CGA laptop dissection

Posted on 2015-08-11, 14:10

by

by matze79

in Marvin \ System Specs

in Marvin \ System Specs

Another Idea is using a AD724 RGB to NTSC/Pal Encoder Chip 😀 This Circuit combined with the AD724 Circuit.

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Re: Interference on simple AdLib clone, any ideas?

Posted on 2015-08-11, 14:03

by

by matze79

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes Audio Signal on Pin 3 of LM386, Second Connection to Ground. Check if there is Hum. If yes, bad. If no Hum is present, the LM386 needs better decoupling. The LM386 is known for weird Sound.. its better used for Doorbell 😀

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Re: Optimizing a 386: questions

Posted on 2015-08-10, 09:52

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by matze79

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The Trident used in this Machine will prevent the 386 from unleashing its Power in VGA. The 9000 is slow, a good choice for a 286 CPU or 8088/8086/V20/V30 in 8bit Mode. There are 32bit 1Mb Ram Versions of the Trident Card, which equal to ET4000/Cirrus Logic GD5422/GD5424. They where later …

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Re: RAM on a 286 motherboard

Posted on 2015-08-02, 18:05

by

by matze79

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I'm sure the -10 on your DRAM means 100ns 😀

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Re: Best PCI graphics card for AMD Opteron 180 system

Posted on 2015-07-27, 11:31

by

by matze79

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

feiopa: I use a 8400GS 256Mb PCIe in a Dual Coppermine on a PCIe to PCI Adapter, even a 8800GT 512Mb works 😀

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Re: Interference on simple AdLib clone, any ideas?

Posted on 2015-07-26, 10:52

by

by matze79

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Grab the Signal on Pin3 of LM386 and check if noise is present. This is unamplified Signal. The LM386 is a trashy amp.

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Re: How to enable cache on TI SXL-40 CPU?

Posted on 2015-07-25, 20:07

by

by matze79

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

http://www.philscomputerlab.com/cyrix-486dlc.html This tools should work for the TI CPU too.

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Re: Best DOS version for a late 486/early Pentium system?

Posted on 2015-07-25, 17:28

by

by matze79

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It has nice Utilities which automatic optimize your Startup Files and load everything it can up. But later MS came up with memmaker which does almost the same Job.

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Re: Best DOS version for a late 486/early Pentium system?

Posted on 2015-07-25, 15:35

by

by matze79

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

There is no Reason to keep a buggy Driver 😀 and no Problems with Himem.sys from 98. Maybe DSA1 makes trouble with more then 16Mb installed. Use eatxms Programm for Applications incombatible with more then 16Megs. Old himem.sys has 16Mb limit, so problem will not occur.

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Re: Best PCI graphics card for AMD Opteron 180 system

Posted on 2015-07-25, 08:01

by

by matze79

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Don't forget about these: http://www.sintech.cn/riser%20card/ST8010%20P … ser%20card.html

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ELSA Gloria II Pro - Driver Packages ?

Posted on 2015-07-25, 07:54

by

by matze79

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi, i have a ELSA Gloria II AGP-Pro Card running in a Athlon 700, its equiped with a NVIDIA Quadro (II?) Chip. i'm searching for the Original Driver Packages, i know there was a Original XP/2000 Driver from ELSA. And Drivers for 3DS MAX and other CAD Software. Does anyone own this Card and has the …

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Re: Best PCI GFX for P-III?

Posted on 2015-07-24, 17:56

by

by matze79

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

PCIe x16 to PCI Adapter and a lowEnd PCIe Graphicscard ~25W. Does not sound like a good idea, the GFX card might be too incompatible with Win98 games. I started this conversation by asking for the best, not the fastest number chrunching card. By the best, I am thinking of the fastest out of those …

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Re: Best DOS version for a late 486/early Pentium system?

Posted on 2015-07-24, 12:31

by

by matze79

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

MS-Dos 6.22 for combatiblity, with himem.sys and emm386 from Windows 98.

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Re: PS/2 to Microsoft Serialmouse Adapter Converter

Posted on 2015-07-24, 09:40

by

by matze79

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

maybe my Logitech Mouse is somewhat old 😀 could be that something doesnt behave correctly. Theoretical the Software could be rewritten to use the Logitech Drivers. This will give nearly twice the Speed.

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Re: PS/2 to Microsoft Serialmouse Adapter Converter

Posted on 2015-07-24, 09:27

by

by matze79

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

You can't have Perfect Tracking on a Serielle Mouse in High Resolution at 1200 Baud. Even 2400 Baud Logitech isnt that fast, i have a Serial Logitech Mouse and 1280x1024 is Painful. Who the Hell uses 1280x1024 on a Computer that doesnt support PS/2 ? :) The MS-Mouse was designed in 1983. There was …

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Re: Best PCI GFX for P-III?

Posted on 2015-07-24, 09:07

by

by matze79

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

PCIe x16 to PCI Adapter and a lowEnd PCIe Graphicscard ~25W. Most PCI Cards are cut down Versions 🙁 i flashed a MAC Radeon 7000 PCI to PC for my K6-2 Machine, because i couldnt find any PCI Version with a fast Memory Bus..

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Re: PS/2 to Microsoft Serialmouse Adapter Converter

Posted on 2015-07-23, 18:40

by

by matze79

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

https://www.youtube.com/watch?v=ZvfXvMzH19w A Video of the Version above. Showing Paint in 800x600 on Windows 3.1. Sorry for Quality, i try to make it better 😀

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Re: AMD K6-2/300 DOS Build

Posted on 2015-07-21, 20:37

by

by matze79

in Marvin \ System Specs

in Marvin \ System Specs

On K6-3, K6-2+ you can change Multiplicator on the fly. So you can underclock if its too fast. K6-2+ and K6-3/3+ are Mobile CPUs, AMD had launched its Athlon, and it ran too Hot for Notebooks. So they grabbed their old K6-2 Design and putted some L2 Cache on the DIE to make it faster, add a variable …

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