Re: Colorimage Tseng ET4000AX weird colorful pixels top of screen when transitioning between different screens and effec

Posted on 2022-12-19, 09:24

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by ViTi95

in Marvin \ Video

in Marvin \ Video

I've seen a similar behaviour on Trident cards when there is a palette change without waiting for the VSync. I'm pretty sure it's the same issue, nothing you can do about as is a problem on the video chip design.

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Re: FastDoom. A new Doom port for DOS, optimized to be as fast as possible for 386/486 personal computers!

Posted on 2022-12-16, 09:33

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by ViTi95

in Release Announcements

in Release Announcements

While developing optimizations for Potato mode i've just discovered a bug that I think it hasn't been documented and exists since... 1994 (!!) It just happens that Heretic has a rendering bug on R_DrawSpan (which is ASM optimized and it's much faster compared to Doom R_DrawSpan). It basically …

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Re: MUS-1099 GameBlaster Sound Card

Posted on 2022-12-13, 07:28

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by ViTi95

in Marvin \ Sound

in Marvin \ Sound

Me too 😁 Filename 20221213_082515.jpg File size 215.14 KiB Views 1033 views File comment Game Blaster clone

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Re: which dos soundcards with onboard wavetable could remap instruments to mt-32 presets?

Posted on 2022-12-09, 11:47

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by ViTi95

in Marvin \ Sound

in Marvin \ Sound

I use MIDI Commander (https://code.google.com/archive/p/midicom/), and yeah the MT-32 compatible mode is the C/M.

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Re: FastDoom. A new Doom port for DOS, optimized to be as fast as possible for 386/486 personal computers!

Posted on 2022-12-09, 01:30

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by ViTi95

in Release Announcements

in Release Announcements

It's fully working on DosBox-staging, both old and new models of IBM CGA cards are supported. The 512 color mode doesn't require perfect timing cycles, so it should work on any emulator / computer (with the IBM CGA obviously). I still have to try on real hardware since my IBM CGA card composite …

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Re: FastDoom. A new Doom port for DOS, optimized to be as fast as possible for 386/486 personal computers!

Posted on 2022-12-08, 17:15

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by ViTi95

in Release Announcements

in Release Announcements

Those ports use the Allegro library for sound, that's another option. But any optimization or support for new sound card has to be redone for this library. About limit-removing, only unlimited sprites are included right now, I've also developed unlimited visplane support but won't be released until …

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Re: FastDoom. A new Doom port for DOS, optimized to be as fast as possible for 386/486 personal computers!

Posted on 2022-12-08, 09:20

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by ViTi95

in Release Announcements

in Release Announcements

Hi @noshutdown! 1. is it fully demo compatible with vanilla doom? Latest release it's as compatible with Vanilla Doom as possible, any bug related to desync on demos will be studied and fixed. 2. will there be a 160*100*256c mode? that is, 256 color version of FDOOMC16 and FDOOMC16. For CGA cards …

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Re: which dos soundcards with onboard wavetable could remap instruments to mt-32 presets?

Posted on 2022-12-07, 09:47

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by ViTi95

in Marvin \ Sound

in Marvin \ Sound

Yamaha DB50XG, DB60XG and NEC XR385 also have a MT-32 compatible mode (TG300B mode, enabled via MIDI commands). Ok I know those aren't soundcards per se, but can enable any soundcard with wavetable header to be MT-32 "compatible" Here are multiple recordings I did in the past: Monkey Island intro: …

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Re: DOS32AWE - DOS/4G compatible DOS Extender with Sound Blaster AWEUTIL MIDI synthesizer support for Protected mode,V

Posted on 2022-12-02, 07:36

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by ViTi95

in Marvin \ Sound

in Marvin \ Sound

Does anybody know how DOS32AWE fixes the VIAFMTSR thing? It's driving me crazy understand how it works, and what exactly makes it to crash.

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Re: DOS sound libraries (like AIL) - midi, digital, mods?

Posted on 2022-11-25, 12:34

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by ViTi95

in Marvin \ Software

in Marvin \ Software

I've been using Apogee Sound System for FastDoom as a external library, and ended up including the whole library in the game code and hand optimize it, also add support for new devices and remove not needed code for the project. No tracker-style music support though. Edit: Maybe you can take a look …

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Re: FastDoom. A new Doom port for DOS, optimized to be as fast as possible for 386/486 personal computers!

Posted on 2022-11-23, 07:38

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by ViTi95

in Release Announcements

in Release Announcements

One think will be amazing, i dont know how difficult will be to implement is AudioCD. If i dont remember bad, Ultimate Doom soundtrack is something like 50-55min longer and Doom 2 70-75, perfect to fit in a cdrom Mmmm interesting idea, I've never worked with the MSCDEX but will take a look into it. …

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Re: FastDoom. A new Doom port for DOS, optimized to be as fast as possible for 386/486 personal computers!

Posted on 2022-11-18, 19:46

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by ViTi95

in Release Announcements

in Release Announcements

SF2 support would be amazing though ... Seems quite rational to me, considering there are already separate binaries for every video mode imaginable. I'm still looking for a way to dynamically link code on runtime, in order to reduce the number of executables and reduce the executable size itself as …

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Re: FastDoom. A new Doom port for DOS, optimized to be as fast as possible for 386/486 personal computers!

Posted on 2022-11-18, 18:30

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by ViTi95

in Release Announcements

in Release Announcements

Hah, nice - should be fun to see which IBM CGA model (old vs. new) produces more suitable colors for the Doom palette. Perhaps it's even possible to 'cheat' a bit by modifying the target Doom palette so it matches up better with these colors. On real hardware it can be difficult to get reliable …

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Re: FastDoom. A new Doom port for DOS, optimized to be as fast as possible for 386/486 personal computers!

Posted on 2022-11-18, 01:15

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by ViTi95

in Release Announcements

in Release Announcements

Thanks to VileR I've been able to create a new mode for IBM CGA cards: the 512 color composite mode (80x100). Still haven't tested on a real CGA card with composite output, but this is how it looks on DosBox-Staging. The resolution is too low, but OMG those colors... still can't believe this is what …

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Re: FastDoom. A new Doom port for DOS, optimized to be as fast as possible for 386/486 personal computers!

Posted on 2022-11-10, 01:26

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by ViTi95

in Release Announcements

in Release Announcements

VGA 640x480x2 -> No need for it as already exists Mode-Y EGA 640x350x16 -> Wrong aspect ratio so, so I'm pretty sure I won't develop it. Also EGA cards are so slow that so much resolution won't get high frame rates AT&T 640x400x2 -> I don't have any hardware that supports this mode so I'm not going …

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Re: Retro Software Development?

Posted on 2022-11-08, 22:55

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by ViTi95

in Marvin \ Software

in Marvin \ Software

If all people want to do is ask questions for their own projects then currently milliways works. It doesn't really work for me, because there's so much else going on in that forum I rarely ever look at it - I can't keep up with all of the new posts. If there was a forum related to software …

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Re: DOS32AWE - DOS/4G compatible DOS Extender with Sound Blaster AWEUTIL MIDI synthesizer support for Protected mode,V

Posted on 2022-11-08, 12:59

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by ViTi95

in Marvin \ Sound

in Marvin \ Sound

Hi! One question, how do you fix the VIAFMTSR issue? I want to modify DOS32A which I include in FastDoom, I have tried modifying my OPL code to avoid crashes but to no avail.

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Re: Programming on DOS/Windows 95/98

Posted on 2022-11-08, 08:51

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by ViTi95

in Marvin \ Software

in Marvin \ Software

Right now I develop for DOS under Linux and Windows, cross-compiling with OpenWatcom v2 + NASM. For testing DosBox-X + 86Box + real hardware. Debugging is still a problem for me, as it is really unstable. And usually do scripts in Python if I have to do some preprocessing, as is really easy to use …

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Re: FastDoom. A new Doom port for DOS, optimized to be as fast as possible for 386/486 personal computers!

Posted on 2022-11-07, 19:40

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by ViTi95

in Release Announcements

in Release Announcements

Time for a new release! FastDoom 0.9.1: * Creative Music System (Game Blaste) music support by @Tronix286 * New EGA 160x200 (16 color) mode FDOOMEW1.EXE, fast on 8-bit ISA cards * New EGA 320x200 (14 color) mode FDOOME14.EXE, much faster on 8-bit ISA cards compared to FDOOMEGA.EXE * Updated FastDoom …

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Re: Retro Software Development?

Posted on 2022-11-04, 16:13

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by ViTi95

in Marvin \ Software

in Marvin \ Software

Honestly, for my purposes at least, I'm not sure that would work. A lot of the discussion I'd like to have around retro programming has less to do with specific projects I'd have checked into a repository, and more random technical details. Like for instance, right now I'm trying to figure out if a …

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