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Re: VSBHDASF: Fork of VSBHDA with Soundfont support

Try executing "jemmex novcpi" before running Doom, that should fix some issues with protected-mode executables EDIT: I’ve done more testing with my eBox 2350MX. Using the /MV to limit voices or changing /PS has little to no effect. I’ve also tested a smaller SF2 (just under 1 MB), and there’s no …

Re: VSBHDASF: Fork of VSBHDA with Soundfont support

I've tested the new MMX executable, it's a bit faster, but there are still huge slowdowns. Also changing IRQ 5 to IRQ 2 didn't make any difference. I guess this cpu is not fast enough EDIT: It might be a good idea to add a command-line parameter to select a custom frequency for MIDI rendering in …

Re: VSBHDASF: Fork of VSBHDA with Soundfont support

Finally, I tested it on my eBox (Vortex86MX @ 933 MHz with 512 MB RAM). It works, but there are random performance hiccups. For example, FastDoom with 2GMGSMT.SF2 (the 2 MB soundfont from the AWE32) runs perfectly fine at 35 FPS, but occasionally the game slows down to 2-3 FPS. Sometimes it even …

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

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:// …

Re: Doom8088: Doom on a 286 / 8088

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 …

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

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 …

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

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, …

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

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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