Re: PCI sound cards and Chipsets from various manufacturers...

Posted on 2020-03-02, 20:18

by

by digger

in Marvin \ Sound

in Marvin \ Sound

That, or just plug in an old VGA card with good legacy VBE/VGA/EGA support in a PCI slot (with a PCIe to PCI adapter if necessary) and pass that card through to the DOS VM. 🙂 You could even keep your shiny modern TFT monitor connected to your primary modern graphics card and hook an old CRT monitor …

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Re: PCI sound cards and Chipsets from various manufacturers...

Posted on 2020-03-02, 19:31

by

by digger

in Marvin \ Sound

in Marvin \ Sound

Also we can expect removing CSM from UEFI and other legacy purification, maybe soon removing of real and V86 mode. So it's question how long will be possible to run DOS on real HW and if it will take effort for all sort of hacks instead of just improving virtualizers to better emulate SB and SVGA. …

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Re: Question about Sierra's EGA640.DRV dithering

Posted on 2020-03-02, 17:32

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by digger

in Marvin \ Video

in Marvin \ Video

Apparently the ATI Graphics Solution supports a 640x200x16 graphics mode as well. Re: Video Emulation on VGA?

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Re: Video Emulation on VGA?

Posted on 2020-03-02, 17:28

by

by digger

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Cool. 🙂 That means someone could theoretically write an "AGS640.DLL" driver to make the ATI Graphics Solution work through dithering with 256-color Sierra SCI adventure games. See Question about Sierra's EGA640.DRV dithering

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Re: Faux86 - an 8086 emulator for Raspberry Pi that runs bare metal

Posted on 2020-03-02, 07:07

by

by digger

in PC Emulation

in PC Emulation

An interesting solution, albeit a bit pricey.

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Re: Video Emulation on VGA?

Posted on 2020-03-01, 23:15

by

by digger

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Actually, one notable difference between Tandy graphics (and PCjr graphics, on which it is based) on the one hand and CGA and Plantronics Colorplus on the other hand, is that the former used part of the system's conventional RAM as shared video memory, whereas the latter had separate discrete video …

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Re: PCI sound cards and Chipsets from various manufacturers...

Posted on 2020-03-01, 18:01

by

by digger

in Marvin \ Sound

in Marvin \ Sound

Cool. So since the LPC spec doesn't define a standard connector, would it make sense to establish such a standard "LPC connector" for the tinkering community at this point? One that mandates that optional LPC features required for full ISA compatibility (LDRQ#, SERIRQ) to be implemented? With such a …

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Re: Video Emulation on VGA?

Posted on 2020-03-01, 17:43

by

by digger

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Apparently there is indeed a way to emulate Tandy 1000 video modes on some VGA cards. But it doesn't work with every game and it only works with certain VGA chipsets. See https://www.vogons.org/viewtopic.php?p=737096#p737096 As for emulating Plantronics Colorplus modes, why would anybody ever want …

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Re: Any good MS-DOS 80386/80486/Pentium(on slow system) games for testing Protected mode emulation and instructions?

Posted on 2020-03-01, 17:35

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by digger

in PC Emulation

in PC Emulation

The initial release of Comanche: Maximum Overkill ran in protected mode without using a standard DOS extender. It would refuse to run when EMM386 or QEMM was loaded. That version of the game might be a good test case. I remember reading somewhere that later revisions of the game used a more well- …

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Re: Aladdin (DOS) music - SB16 vs. SBPro vs. WSS

Posted on 2020-03-01, 17:29

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by digger

in Marvin \ Sound

in Marvin \ Sound

It's a shame that Aladdin didn't support the Gravis Ultrasound, given that the game used tracker music.

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Re: Question about Sierra's EGA640.DRV dithering

Posted on 2020-03-01, 17:22

by

by digger

in Marvin \ Video

in Marvin \ Video

Apparently, someone made a 640x200x16 Sierra driver for Tandy 1000 computers as well: http://www.vcfed.org/forum/showthread.p ... post279300 http://www.symphoniae.com/Tandy/tandy640.zip

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Re: Newly made PCMCIA sound card

Posted on 2020-03-01, 17:07

by

by digger

in Marvin \ Sound

in Marvin \ Sound

Cool project! 👍 But if you are going to recreate a PCMCIA sound card anyway, wouldn't it be better to recreate the New Media .WAVjammer? Apparently that's the only PCMCIA sound card (and thus the only sound card in general not requiring ISA DMA) that was ever natively supported in any DOS games: …

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Re: PCMCIA Sound Cards

Posted on 2020-03-01, 16:29

by

by digger

in Marvin \ Sound

in Marvin \ Sound

Abuse doesn't use the AIL/Miles Design library but the Human Machine Interfaces one instead, that's why there's no .dig files. The demo version doesn't support the Wavjammer, the full version does: setup_000.png The setup from Destruction Derby, a game using AIL/Miles, as an example of what it …

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Re: PCI sound cards and Chipsets from various manufacturers...

Posted on 2020-03-01, 15:56

by

by digger

in Marvin \ Sound

in Marvin \ Sound

I have not tried to buy the chip. Next time I am gonna mess with this stuff is when I hook up a CPLD or FPGA to LPC and PCI bus and create the ultimate ISA bridge. But for now my hands are full with some other things... That will be an awesome project! 🙂 Do you think this patent might get in the …

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Re: Faux86 - an 8086 emulator for Raspberry Pi that runs bare metal

Posted on 2020-03-01, 15:28

by

by digger

in PC Emulation

in PC Emulation

Me, too. GPIO currently has about 28 free i/o pins. PC/XT-Bus (8-Bit ISA) uses 62 pins. A simple form of ISA without DMA/IRQ lines might be possible, I suppose, if some of the special lines are faked. If not, a few I/O Port-Expander chips may help to overcome the limited number of pins. Ordinary …

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Re: Emulating MT-32 on an RPi2

Posted on 2020-02-17, 00:03

by

by digger

in MT-32 General

in MT-32 General

Hopefully don't sound too picky, but I am an audio centric person and the difference is pretty noticable to me. Even if I'm getting a little tearing or a frame rate drop, it's worth it. Aren't there quite a few high quality sound cards for the Raspberry Pi out there that connect through GPIO pins …

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Re: Faux86 - an 8086 emulator for Raspberry Pi that runs bare metal

Posted on 2020-02-16, 23:54

by

by digger

in PC Emulation

in PC Emulation

Cool project! And it's also interesting to find out about the existence of Circle. I had no idea a bare metal SDK existed for the Raspbery Pi family. Although it's cool to see bare metal software being developed for the Raspberry Pi, I wonder how much actual speed gain it would offer us over a …

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Re: How about a MR-BIOS ROM file repository?

Posted on 2020-02-16, 23:13

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by digger

in Marvin \ Software

in Marvin \ Software

I remember flashing an MR BIOS on an Intel Advanced/EV ("Endeavour") motherboard as an alternative for the AMI BIOS it originally came with. I remember downloading it from the MR BIOS website (or was it a BBS?) from a long list of aftermarket BIOS images for many motherboard types. It was an …

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Re: dynrec vs. secure platforms - opinions wanted

Posted on 2020-01-20, 14:25

by

by digger

in DOSBox Development

in DOSBox Development

jmarsh wrote on 2020-01-20, 00:32: Uh yeah, we were posting back and forth in the PPC dynrec thread here... Sorry about that. I guess I should have scrolled back a bit first.

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Re: Rudolph Loew apparently passed away in September 2019

Posted on 2020-01-19, 17:23

by

by digger

in Milliways

in Milliways

Would it be an idea to publish all the source code of Rudolph Loew's work to GitHub? If his code gets published there before the 2nd of February 2020, it will be archived in the GitHub Arctic Code Vault for future generations. What better way to preserve his legacy?

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