Re: Gravis Ultrasound GUS PNP/PNP PRO ram extender "for sale" questions...

Posted on Today, 12:13

by

by Tiido

in Marvin \ Sound

in Marvin \ Sound

It shouldn't take much effort to conjure up the missing address line to get 16MB 30pin SIMMs to work, but it won't be a plug in solution but something requiring an actual modification...

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Re: MP32L - Lite version of MP32 : Pi based MT32 synth

Posted on Yesterday, 11:40

by

by Tiido

in Marvin \ Sound

in Marvin \ Sound

This is an EUwide thing, everyone is gonna pay...

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Re: AMD 5x86 100MHz or i486 66MHz?

Posted on 2021-06-17, 09:07

by

by Tiido

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

You can make the 100MHz run at 66MHz with change of multiplier jumper, there is option to have 2x or 3x. It should give performance similar to a 66MHz DX2 while being much less hot since that CPU is 3.3V and not 5V.

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Re: Help identifying a cap on QDI Titanium IB+ motherboard

Posted on 2021-06-11, 16:40

by

by Tiido

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

That capacitor needs to be 6.3V or higher and as large capacitance that you can fit there. Original was probably 470 or 1000µF

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Re: The comprehensive list of all modern reproductions of vintage sound cards

Posted on 2021-06-10, 22:28

by

by Tiido

in Marvin \ Sound

in Marvin \ Sound

Right, yes though it is nearly directly compatible with only some minor differences having to do with test register(s) and timer but actual synthesizer part side of things is same (and pinout is same too).

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Re: T-04YBSC-A, new YMF71x based sound card + SETYMF utility

Posted on 2021-06-10, 13:45

by

by Tiido

in Marvin \ Sound

in Marvin \ Sound

Yes, just like with almost every other sound card that has gameport that has no extra MIDI connectors. I have a gameport MIDI cable that has extra DB15 connector for connecting a gamepad/joystick in addition to two DINs.

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Re: Orpheus Soundcard: a new DOS soundcard with SPDIF/OPL3/MPU support

Posted on 2021-06-08, 19:52

by

by Tiido

in Marvin \ Sound

in Marvin \ Sound

ESCD is stored in the BIOS chip, it might be worth to try to flash a fresh BIOS image using something like uniflash which will not try to preserve anything of the original BIOS content.

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Re: The comprehensive list of all modern reproductions of vintage sound cards

Posted on 2021-06-08, 18:43

by

by Tiido

in Marvin \ Sound

in Marvin \ Sound

YM2151 is OPM and has nothing to do with OPL. It is very similar to OPN though but nothing on PC can use it. IBM Music Feature card does have 2151 as a MIDI device but this card won't be compatible since it isn't exposing it as a MIDI device but a direct access part. Some emulation or VGM playback …

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Re: Tiny Vortex86-based DOS gaming PC - weeCee

Posted on 2021-06-08, 15:04

by

by Tiido

in Marvin \ System Specs

in Marvin \ System Specs

There is a chance tha there must be some configuration done on the chipset to make the ISA bus see all addresses. On one PC104 module using AMD elan520 chipset I had to make a little utility to conf ISA to see more Io ranges or many things didn't work. I recall that by default it only forwarded 2xx …

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Re: The comprehensive list of all modern reproductions of vintage sound cards

Posted on 2021-06-07, 10:05

by

by Tiido

in Marvin \ Sound

in Marvin \ Sound

I would think the list should contain all the recently made hardware that is explicitly designed to be used with the retro hardware with their software environments. I imagine primary purpose of this list is more or less to easily see what is available with intent to actually get and use these …

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Re: BRAND NEW KDS 19 inch monitor MAJOR problems

Posted on 2021-06-04, 21:36

by

by Tiido

in Marvin \ Video

in Marvin \ Video

Monitor (or any other mains powered device) is absolutely not the first thing to muck around with especially with no prior electronics and/or soldering experience... You'll first want to acquire all the right tools and supplies, learn to properly use them. Then you will be able to swap out parts …

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Re: Sound Blaster AWE32 not detected - IO address

Posted on 2021-06-04, 14:27

by

by Tiido

in Marvin \ Sound

in Marvin \ Sound

That dent on the oscillator could be the reason. Chances are EMU8000 is misbehaving when it is receiving no clock and causing rest to misbehave too. The Oscillator is 45.158400MHz (44100 * 1024), it shouldn't be difficult to find a compatible replacement since it is a standard frequency.

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Re: The worst motherboards you have had to work with

Posted on 2021-06-02, 14:30

by

by Tiido

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

If it was a motherboard feature there wouldn't be a whole new sub-family of DRAMs. The whole point of EDO DRAMs is that they hold their output between !CAS cycles, saying that doesn't happen or has no effect in the situation seems to imply that one is not familiar at all with the details of …

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Re: Best Windows 95 OSR2 & 98SE Service Packs

Posted on 2021-06-02, 14:12

by

by Tiido

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The icons are in SHELL32.DLL IIRC, you can swap out the file for old one.

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Re: The worst motherboards you have had to work with

Posted on 2021-06-02, 13:56

by

by Tiido

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have two 16MB sticks, with identical electrical layout, with same kind of 4x 4M chips with identical internal oganization and refresh requirements, and the only difference is one stick has EDO and other has FPM DRAMs on them. One works with a typical 486 board, other fails the POST, It is not a …

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Re: Best Windows 95 OSR2 & 98SE Service Packs

Posted on 2021-06-02, 11:59

by

by Tiido

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

As far as 98SE goes, the 3.x line of service packs should be completely avoided, it is full of files from later windowses, replacing ones of 98 itself. A lot of software will break due to it. There are older ones, 2.1 for example, that will install all the official updates with a few unofficial ones …

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Re: The worst motherboards you have had to work with

Posted on 2021-06-02, 08:33

by

by Tiido

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I am skeptical of the "doesn't work with EDO" I think it's like "Doesn't work with PC-100" ... it's just that higher density DRAM more common on the newer standard and it's those the board doesn't support. EDO is more than just something that can work faster (PC66/100/133). EDO outputs data long …

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Re: Going to try getting digital audio (S/PDIF) out of an SC-88VL and maybe an SC-55

Posted on 2021-06-01, 18:22

by

by Tiido

in Marvin \ Sound

in Marvin \ Sound

I2S has come to mean the LRCLK+BCLK+SDATA combination, but yes, there are different formats available on those signals that are not what the link originally was meant to carry. Philips format (the real I2S), Left Justified (almost same as Philips but lacks a dead cycle before MSB) and Right …

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Re: Going to try getting digital audio (S/PDIF) out of an SC-88VL and maybe an SC-55

Posted on 2021-06-01, 07:50

by

by Tiido

in Marvin \ Sound

in Marvin \ Sound

The problem is the way data is output, Japanese love to use right justified formats, where you must capture all the bits or you are missing the MSBs and nothing supports formats other than RJ16 pretty much. Only with Philips I2S or Left Justified format do the LSBs get dropped, so you can support …

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Re: Going to try getting digital audio (S/PDIF) out of an SC-88VL and maybe an SC-55

Posted on 2021-05-31, 09:23

by

by Tiido

in Marvin \ Sound

in Marvin \ Sound

At least it works again ~ I have used DIT4096/4192 successfully. But there's need to do format coversion since nothing supports the 18bit output and that's what the extra parts are doing on the links. Direct connections should still work, just without proper fromat conversion you'll have garbage …

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