Re: Identify isa memory expansion card

Posted on 23 minutes ago

by

by mpe

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

If this is providing EMS memory I bet it is configuring the address of EMS frame window. Given by the manufacture date of the DS1292 I think the battery is pretty much guaranteed to be dead.

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Re: My 486 restarts when i start Doom

Posted on Today, 13:46

by

by mpe

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

You shouldn't need to replace the extender. Use whatever DOOM/Duke ships with. Also the DOOM does need neither XMS nor EMS so try to boot without HIMEM/EMM if you use one to avoid any rare compatibility issues. Try to disable the L2 cache if your motherboard has one. Check the board for any damage …

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Re: Identify isa memory expansion card

Posted on Today, 12:29

by

by mpe

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The markings on the left side (Spectrum, Inc.; DT55B) looks like a vendor name and model number to me 😀 Any reason to think it is not correct?

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Re: Same Model Soundcard Revisions?

Posted on Today, 11:16

by

by mpe

in Marvin \ Sound

in Marvin \ Sound

Often during that era manufacturers started with a first version rushed to get on the market. That included socketed chips, programmable logic, etc. Then in subsequent versions were designed to reduce manufacturing cost by increased component integration (as well as remove some bugs found). Nice …

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Re: My 486 restarts when i start Doom

Posted on Today, 10:33

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by mpe

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Try to set the safest values in BIOS setup. If still not working your motherboard is likely to blame.

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Re: Need some help on a motherboard.

Posted on Today, 09:26

by

by mpe

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

From 1995 book "Pentium Processors and Related Products" by Intel: Filename Screenshot 2020-02-25 at 09.25.06.png File size 286.29 KiB Views 39 views

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Re: Need some help on a motherboard.

Posted on Today, 08:07

by

by mpe

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Bus Frequency or Bus-to-core Frequency ratio according to Intel

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Re: Bought these (retro) hardware today

Posted on Yesterday, 14:05

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by mpe

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes. They are electrically compatible. That means soldering 30 * 4 = 120 pins. Which is quite a hassle considering you don't know if the board works or not. But who am I to tell you how to burn your own time 😀

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Re: Bought these (retro) hardware today

Posted on Yesterday, 13:14

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by mpe

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

H3nrik V! wrote on Yesterday, 11:28: Anybody knows what RAM to plug in? Is it just DIP chips, or is it SIP modules? You need SIPP modules for this one. In addition the bottom slot might be a slot for some proprietary RAM upgrade card. If you don't have any SIPPs you can always solder pins to a 30 …

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Re: Can someone identify this unknown motherboard?

Posted on 2020-02-23, 00:27

by

by mpe

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It should have alladin chipset.. But i dont know the maker or i dont have any manual for the jumper setting. Also dont know if there are chipset drivers ever released for this board. I think it is safe to assume that there is no such thing as "chipset driver" for this board. There is no I/O :) …

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Re: Bought these (retro) hardware today

Posted on 2020-02-22, 13:30

by

by mpe

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Bought this rather interesting combination of ISA multi I/O card and dual 12V fan. Never seen such combination before Filename DSC_5391.jpg File size 553.95 KiB Views 369 views

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Re: EISA Graphics / Video Cards

Posted on 2020-02-20, 16:16

by

by mpe

in Marvin \ Video

in Marvin \ Video

Yes. But SCSI Controllers or NICs are a different sort of animals. They communicate to the CPU differently than graphic cards do. They tend to benefit from bus mastering, burst mode, 32bit access, buffering, more advanced bus arbitration and other tricks EISA brings. For low-res video DOS tasks …

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Re: Any ISA sound card sound as good as the Gravis Ultrasound ?

Posted on 2020-02-19, 07:36

by

by mpe

in Marvin \ Sound

in Marvin \ Sound

There are several board revisions of CT1600. The earlier ones use OSC from the ISA slot. More recent ones have an extra oscillator onboard.

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Re: Any ISA sound card sound as good as the Gravis Ultrasound ?

Posted on 2020-02-17, 09:38

by

by mpe

in Marvin \ Sound

in Marvin \ Sound

It sounds good in a few games that support it specifically. E.g., Epic Pinball and Jazz Jackrabbit. Games with Gus HW mix support ( source ): Archon Ultra Crusader: No Remorse Crusader: No Regret Death Rally DOOM v1.2 or below Epic Pinball Extreme Pinball Jazz Jackrabbit The Lemmings Chronicles One …

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Re: Bought these (retro) hardware today

Posted on 2020-02-16, 09:46

by

by mpe

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

LewisRaz wrote on 2020-02-16, 00:19: https://i.ibb.co/ggdBNQn/IMG-2312.jpg […] Show full quote Nice one. The socket in the top right corner looks like a slot for Intel 485 TurboCache. I've never seen a module for these.

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Re: Any ISA sound card sound as good as the Gravis Ultrasound ?

Posted on 2020-02-15, 21:46

by

by mpe

in Marvin \ Sound

in Marvin \ Sound

OK. It was probably incorrect to say that there was no competition in wavetable chipsets in 92. There were some really good solutions especially in professional segment.

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Re: Any ISA sound card sound as good as the Gravis Ultrasound ?

Posted on 2020-02-15, 19:36

by

by mpe

in Marvin \ Sound

in Marvin \ Sound

What I see on some boards above is the IC376 which is the same chip as on the original WaveBlaster and predecessor of the EMU8000 (not an early version of it). There is no dispute that evolution of these early chips eventually lead to the EMU8000. I would rather say that the EMU8000 used some tech …

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Re: Any ISA sound card sound as good as the Gravis Ultrasound ?

Posted on 2020-02-15, 13:43

by

by mpe

in Marvin \ Sound

in Marvin \ Sound

I think Gravis Ultrasound is overrated. Its a cool Card with nice Features. But which software really use all of them ? only the Demoscene exploited the Card to full potential. properly a handful games too. That's actually quite an endorsement. Yes, it doesn't quite work as the SB alternative. It …

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Re: Any ISA sound card sound as good as the Gravis Ultrasound ?

Posted on 2020-02-15, 09:50

by

by mpe

in Marvin \ Sound

in Marvin \ Sound

GF1 is a 1992 chip. None of the other superior wavetable chipsets existed back then. just for the record, the EMU8000 chip existed in 1991, E-MU were putting them in all their synths before they made the wavetable card. The first version was 1988/1989 for the proteus/1. Wait a moment. Do you have …

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Re: Any ISA sound card sound as good as the Gravis Ultrasound ?

Posted on 2020-02-14, 21:58

by

by mpe

in Marvin \ Sound

in Marvin \ Sound

When bashing the GUS and comparing GF1 with other chipsets it is important to put things to the right context. GF1 is a 1992 chip. None of the other superior wavetable chipsets existed back then. The GUS was competing with OPL2/3 FM synthesis cards like SB Pro, SB16, etc and it was a night and day …

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