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

Posted on 2025-01-08, 11:07

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by ViTi95

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Yep, the Master Levels came with DOOM-IT. Maybe you could rename the FastDoom executable and use this launcher. I haven’t tried it myself (and it’s essentially not supported).

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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 2024-12-18, 18:38

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by ViTi95

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Yep I'm using MTGM.MID from Roland, is not perfect but better than nothing. Captura de pantalla_20241218_192925.png I'm not an expert in MIDI stuff, may be this the solution to the panpot problem @auron? BTW next release will also have Yamaha XG support Captura de pantalla_20241217_150245.png …

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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 2024-12-18, 12:43

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by ViTi95

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Oh, I didn’t know that the pan pot was reversed in the MT-32. I can fix that in the Apogee Sound System, as all MIDI commands are processed before being sent to the actual device. Are there any other MT-32 quirks or differences compared to the GM standard?

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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 2024-12-18, 06:02

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by ViTi95

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Original midi tracks are not modified in MT-32 mode, the difference is that the MT-32 is patched during FastDoom's initialization to behave like a General MIDI device.

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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 2024-12-17, 06:54

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by ViTi95

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Soooo a new release for #DOScember, changelog (1.0.6): - MIDI SysEx support (MPU401, LPT MIDI, RS232 MIDI and Sound Blaster MIDI) - Roland MT-32 support (via -mt32 command line parameter) - Roland SC-55 support (via -sc55 command line parameter) - Show song titles on MT-32 and SC-55 devices https:// …

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Re: Doom8088: Doom on a 286 / 8088

Posted on 2024-12-14, 13:28

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by ViTi95

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The FPU doesn't act as a true parallel coprocessor in 286, 386 and 486 systems, but it does on the 8088/8086 systems. It's possible to send FPU instructions to the 8087 and meanwhile execute more CPU instructions. The downside is that the 8087 is *very* slow, so you have to do very good planning on …

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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 2024-12-14, 13:02

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by ViTi95

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Really interesting! I was thinking of implementing wireframe rendering similar to the Doom-like clone for the Ti83+ (https://www.youtube.com/watch?v=nduMTX86Zl0), maybe it's a bit cleaner. Anyway, I still need to figure out a way to mix SysEx messages into the Apogee Sound System MIDI stream, it's …

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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 2024-12-09, 23:04

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by ViTi95

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FastDoom supports native RS-232 MIDI and I've enabled SysEx support also for it, so it's possible to test this way. Also a USB<->MIDI adapter is valid for testing. BTW here's a screenshot from an emulated environment (86Box + MUNT): FastDoom_MT32.png Currently, GM initialization via MIDI file works, …

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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 2024-12-08, 20:42

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by ViTi95

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Some news, I've successfully added SysEx MIDI message support to the Apogee Sound System. With this implemented, I've also added Roland MT-32 GM initialization. Currently, I can only test this on emulators, so is anyone willing to try out this new feature on a real MT-32? Thanks!

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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 2024-11-20, 10:26

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by ViTi95

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The performance impact is equivalent to adding an extra sound channel, as the digital music format is uncompressed and ready for direct mixing without additional processing. The major impact comes from the extra RAM usage, as the entire music file is cached in RAM. This eliminates the need for …

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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 2024-11-19, 19:30

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by ViTi95

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Just like that, copy the MUSIC folder to your FastDoom installation, and then select PCM in the music options in FDSETUP. Choose the KHz acording to the files installed (otherwise you'll have a very funny experience).

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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 2024-11-19, 17:13

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by ViTi95

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I've tried this on my Toshiba T2130CS (Intel 486 DX4-75, no L2 cache) with an OPL2LPT, there is some performance lost but it's very playable. https://bsky.app/profile/viti95.bsky.social/post/3lb36rimzls2l EDIT: 22KHz and 44KHz SC-55 music packs are now available. This time I had to upload them 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 2024-11-19, 07:48

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by ViTi95

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I'm going to upload higher quality (22KHz and 44KHz) versions of the PCM music pack, these will require more RAM available and CPU time, but will sound better for sure.

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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 2024-11-18, 21:44

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by ViTi95

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That's it, this pack is for PCM music option. It's digital audio, so you can play sound effects and music with a single Covox, or any device that can play digital sound effects.

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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 2024-11-16, 15:30

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by ViTi95

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I've added a PCM music pack ready to use, converted from Brandon Blume (@MusicallyInspired) Roland SC-55 recordings, in 11Khz quality: music_pack_sc55_11khz.7z

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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 2024-10-29, 20:14

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by ViTi95

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I've uploaded a bugfix release (1.0.3): - Optimized rendering of sky and player sprite in 320x200 and 320x240 modes - Added support for id Anthology versions of TNT and Plutonia - Removed -bfg command line (not supported officially) - Updated development environment script so it doesn't fail on …

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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 2024-10-29, 11:05

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by ViTi95

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I'm using the file size of the released DOS version for TNT and Plutonia (1996-06-10), which is the version I've tested with. Thanks for pointing this out; it's a good idea to add support for the id Anthology release (both versions will be supported in the next bugfix release).

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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 2024-10-10, 13:51

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by ViTi95

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But download please ☺️ I need to optimize it first before considering releasing it again. Right now, the conversion from 256 colors to EGA planar is done in C, and OpenWatcom is not smart at all. Here's a small benchmark I did comparing different modes on my 486 laptop (Intel DX4-75): Ultimate Doom …

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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 2024-10-09, 21:58

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by ViTi95

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@Cyberdyne I've spent some time trying to bring back the EGA 640x200 dithered mode, I think I've managed to get better colors. Here's a small demo: https://www.youtube.com/watch?v=jwoI0mlR2_M What do you think?

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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 2024-10-03, 13:16

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by ViTi95

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The last version with native EGA 640x200x16 mode was 0.9.4. I also liked the visual dithering, but the performance was far from good. To be fair, the actual EGA 320x200 mode runs at the native 640x200 resolution 😅.

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