Re: Legend of Kyrandia

Posted on 2021-04-11, 22:10

by

by SScorpio

in DOS

in DOS

GOG has the singular advantage of being legitimate. As I said, linking to abandonware sites is frowned upon here. (I would have doubts about whether "ExoDOS" is necessarily a high-quality archive, but I can't say I've seen it myself.) ExoDOS isn't really a preservation archive, but it's thousands …

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Re: Legend of Kyrandia

Posted on 2021-04-10, 23:31

by

by SScorpio

in DOS

in DOS

I expect it ought to be possible to make an xdiff file patch between the GOG version and the older version, and thus avoid having to link to abandonware websites (which tends to be frowned upon) – assuming it's not just a matter of adjusting a preference somewhere. The issue is the GOG version is …

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Re: Connecting Roland MT-32 to Modern PC?

Posted on 2021-04-10, 15:15

by

by SScorpio

in Marvin \ Sound

in Marvin \ Sound

You can and it has nothing to do with any soundcard unless you are piping the MT-32's output back into a link in on a PC to do mixing there rather than an external mixer. Some people might find extremely minor differences, but with how much a real MT-32 costs there's not really any reason to use one …

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Re: Ultima VII Frame Limiter Patch

Posted on 2021-04-08, 11:25

by

by SScorpio

in Milliways

in Milliways

Awesome work. I wonder how many hours have been lost over the years with people trying to tweak this into a playable state with slowdown tools and the like.

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Re: OPN music on an ISA sound card?

Posted on 2021-03-21, 18:50

by

by SScorpio

in Marvin \ Sound

in Marvin \ Sound

The Falcosoft MIDI Player has OPL3 GM emulator VSTi which includes source. I believe the OPL3 implementation is based on DOSBOX OPL2/3 and Nuked OPL3 implementations. https://www.vogons.org/viewtopic.php?f=5&t=48207 There's also FMMIDI which plays MIDI files on an emulated Yamaha YM2608 (OPNA). …

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Re: Has this 486 L2 cache registered OK?

Posted on 2021-03-18, 22:58

by

by SScorpio

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

WazMeister wrote on 2021-03-18, 22:39: Right, it says 128kb now.. Is that right? Moved jumpers around and added more. That should be correct now. The manual lists UB43 as the Tag with UB48 as Dirty SRAM (schematic has it as ALT), so 32KB x 4 = 128KB, 32KB TAG, 32KB ALT.

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Re: Has this 486 L2 cache registered OK?

Posted on 2021-03-18, 20:57

by

by SScorpio

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

weedeewee wrote on 2021-03-18, 20:50: FYI , UM61256 32K x 8-Bit High Speed CMOS SRAM Great catch, not all model numbers have their size in them.

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Re: Has this 486 L2 cache registered OK?

Posted on 2021-03-18, 20:53

by

by SScorpio

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

https://photos.app.goo.gl/gi87ZjJ4aWdh8PwH9 What are those schematics of? Are they for your motherboard? The middle schematic lists jumpers to set cache sizes. For people to you help, what model and revision is your motherboard? Take a few more pictures, one of the full MB, and then photos of each …

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Re: 2001 Dream PC project

Posted on 2021-03-17, 22:11

by

by SScorpio

in Marvin \ System Specs

in Marvin \ System Specs

btw, mobo trays are awesome, you use them as a test bench, and when happy just slide them in from the back and you're done, so convenient! Why dont they make such cases anymore? Some business-oriented machines still have them. I'm just glad many consumer cases still have rear cutouts behind the CPU …

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Re: Running an Am5x86 at 5v?

Posted on 2021-03-17, 12:00

by

by SScorpio

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Done some probing with the multimeter without a CPU installed. On a VCC pin: When set to 3.3v the board gives 3.52v. When set to 4.0v the board gives 4.03v When set to 5.0v the board gives 5.11v On the VRM (my board has a single VRM on the right side when looking down on the board from the VLB end …

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Re: Running an Am5x86 at 5v?

Posted on 2021-03-15, 15:26

by

by SScorpio

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

If you mean the voltage then you can measure between any VSS and VCC pin (highlighted blue and red below) on the picture below. This is the pinout as you see in the socket. S4 on the pinout is the VOLTDET pin. I believe it needs to be grounded by connecting it to one of the VSS pins for the voltage …

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Re: Running an Am5x86 at 5v?

Posted on 2021-03-15, 14:03

by

by SScorpio

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have a later revision M919 that has the proprietary cache slot and had the same issue getting an AMD 5x86 133 running on it. I found the same thing in that the chip doesn't seem to get hot. Supposedly there is a pin in the CPU socket you can ground which on supported boards will switch the …

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Re: 486 Won't boot, not a Beeb

Posted on 2021-03-06, 17:22

by

by SScorpio

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

You may need to desolder the keyboard connector and visually follow each trace and check them for continuity. The biggest issue I see is the power connector being right there and it may obscure your ability to visually follow some of the traces. It's not uncommon for what looks like a trace running …

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Re: "new" (baby) AT based computer... what to choose?

Posted on 2021-03-06, 17:12

by

by SScorpio

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

IMO it looks like you have a gap between the 286 10Mhz and the 386 DX40. Using the turbo switch on the DX40 might resolve the issue, but there are games where that DX40 is just too fast. Your P233MMX on the other hand can be slowed down to cover everything down to that DX2-66. If you don't want to …

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Re: Good value PC for Win98 - evading the RETRO TAX

Posted on 2021-03-06, 17:00

by

by SScorpio

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Quite a shame there isn't an easy way to install two graphics cards on a single old MOBO and just plug the monitor to whichever you need! If one was PCI you can plug both a PCI and AGP card in and Win98 will work. I remember games having selectors for which graphics adapter to use which made a lot …

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Re: Good value PC for Win98 - evading the RETRO TAX

Posted on 2021-03-06, 03:12

by

by SScorpio

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The cheapest FX5500 model with a 128-bit memory is this one: https://i.imgur.com/alXBgEZ.png the price is roughly 8$. How's that? good enough? My 5500 FX is also passively cooled though it has a larger heatsink than that one. For $8 it's worth a try. If you mod the inf file so the 5500 is …

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Re: Good value PC for Win98 - evading the RETRO TAX

Posted on 2021-03-05, 16:50

by

by SScorpio

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Depending on if you want real DOS mode sound support versus running through Windows then MB chipset matters. But Athlon64s can run Win98 and are cheap around here, I recommend going Socket 754 for Win98 versus Socket 939. Prices vary by region but I've got MB + CPU + RAM shipped for under $50 USD. …

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Re: WP32 McCake : MT32 compatible waveblaster board

Posted on 2021-02-26, 12:56

by

by SScorpio

in Marvin \ Sound

in Marvin \ Sound

It wont require hard MPU. It's a Waveblaster compatible card. So it just goes into the wavetable header. You just need a card that has one without bugs, thats not that hard to find. You still need either a HardMPU or to run SoftMPU for some games that require an intelligent MPU401 interface. The …

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Re: WP32 McCake : MT32 compatible waveblaster board

Posted on 2021-02-26, 12:39

by

by SScorpio

in Marvin \ Sound

in Marvin \ Sound

Won't this still require hardmpu / softmpu for games that need it for a real mt-32? Not to mention you still need a card with otherwise bug-free midi. Yes, all of that with the addition of needing a clear-sounding input on the card since the audio out will be routed through the sound card. …

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Re: WP32 McCake : MT32 compatible waveblaster board

Posted on 2021-02-24, 22:00

by

by SScorpio

in Marvin \ Sound

in Marvin \ Sound

Love this project! Feature request time! Will there be ways to cycle ROMs for munt (CM32L, old MT32) as well as load different sound fonts from within DOS like you can with MDF and a midi PC emulator? These are already features of MT32 Pi. NM: I keep thinking this is going to run MT32 Pi, which is …

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