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

Posted on Yesterday, 00:20

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by ViTi95

in Release Announcements

in Release Announcements

New release! FastDoom 0.8.9 https://github.com/viti95/FastDoom/releases/tag/0.8.9 Changelog: Added new video modes. Huge thanks to @Frenkel (DoomWorld) !! FDOOMC36.EXE => FastDoom CGA 80x100 (122 pseudocolors) FDOOMV36.EXE => FastDoom VGA 80x200 (122 pseudocolors) FDOOMATI.EXE => FastDoom ATI Small …

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Re: Post your 386 Speedsys results here

Posted on 2022-01-25, 12:57

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by ViTi95

in Marvin \ System Specs

in Marvin \ System Specs

EVE Energy ER14250, I guess the previous owner replaced the battery with this new one.

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Re: Post your 386 Speedsys results here

Posted on 2022-01-24, 22:46

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by ViTi95

in Marvin \ System Specs

in Marvin \ System Specs

New board arrived, an Opti 495SLC 1.1 hybrid 386/486 motherboard. It came originally with a 486DX 33MHz, but I've downgraded it to an AMD 386DX 40MHz. Also added 256Kb of fast 15ns cache, Cyrix 87DLC FPU, a Trident TGUI9440 VLB and a VLB Io controller (based on the Promise PDC20230c).

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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 2022-01-24, 13:21

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by ViTi95

in Release Announcements

in Release Announcements

... 1) The forceXX commands are case sensitive, so it's more correct to use "-forceHQ". Everything else is fine. EDIT: "-logTimedemo" is also case sensitive 2) Default configuration is the best one, as close as posible to the original Doom. Just remove the .cfg and let the game create one (or 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 2022-01-20, 10:17

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by ViTi95

in Release Announcements

in Release Announcements

I'll try it on my Hercules cards when my vacation finish. In my testings PCem is much more accurate than DosBox, DosBox-X is a little bit better but again less accurate than PCem.

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Re: VL-ISA Card jumper settings help

Posted on 2022-01-13, 15:15

by

by ViTi95

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Some information on the J8 and J9 pins: http://www.ryston.cz/petr/vlb/pdc20630.html

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Re: CGA text mode emu - Run your favorite CGA game in 80x50 text mode

Posted on 2022-01-07, 09:21

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by ViTi95

in Release Announcements

in Release Announcements

Using half width characters you can double the resolution vertically or horizontally (80x100, or 160x50), maybe it makes the screen look better. It will be a little bit slower, but for sure will look better!

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Re: Bought these (retro) hardware today

Posted on 2022-01-05, 18:49

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by ViTi95

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

New keyboard, don't know what system is for. Has serial (?) connector. Has some back serial numbers: - AK/W2 - M61 - RF63 - P68 - 97801-131 - S26381-K49-V380

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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 2022-01-05, 11:58

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by ViTi95

in Release Announcements

in Release Announcements

Small update: I've just discovered what made text mode 80x50 (and 80x100) screen flicker on some video cards. Older video cards use 8256 bytes per video page on 80x50 mode, while some new video cards use 8000 bytes per video page. For example: - 8000 bytes/page: Voodoo Banshee and later cards, …

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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 2022-01-01, 23:26

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by ViTi95

in Release Announcements

in Release Announcements

In my testings DosBox flickers when the video card is an EGA. This is due to EGA cards not supporting the 80x50 mode, those can only address 80x43 characters (the plane size is smaller, happens on both DosBox and real cards) I'll try if setting the plane size to 4096 fixes the problem with the …

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Re: Bought these (retro) hardware today

Posted on 2022-01-01, 15:42

by

by ViTi95

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Ulticom (DGM&S) ISA V35, 530 Pretty interesting card, I wonder if it's usable as an accelerator card.

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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 2022-01-01, 15:19

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by ViTi95

in Release Announcements

in Release Announcements

That line of code gave me lot's of headache. The theory is that each video page uses 4096 bytes, but using that displacement the screen flickers like crazy. I had to guess that value by trial and error, and it works on almost every VGA card i've tested. Don't know exactly why it works. The only …

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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 2021-12-22, 16:50

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by ViTi95

in Release Announcements

in Release Announcements

Just tested and merged the PR, everything is working fine! I guess it's better to make the FDSETUP program a 32-bit executable (Doom won't run on 16-bit real mode, so there's no need for 286 or 8086 support), and have the possibility to build it with either DJGPP or Watcom. The main idea is to be …

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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 2021-12-22, 08:16

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by ViTi95

in Release Announcements

in Release Announcements

Don't worry about that modebw.wad message, B&W modes try to load it automatically. If someone create a PLAYPAL/COLORMAP better fitted for those modes, just add them to file modebw.wad and it will load automatically. @ujav What monitor and video card are you exactly using? I'll create add an issue to …

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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 2021-12-21, 16:11

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by ViTi95

in Release Announcements

in Release Announcements

Doom is much easier to port to PlayStation and Saturn as those consoles have 32-bit registers, and have the same basic requirements as Doom (a framebuffer, lot's of RAM bandwidth and a fast CPU). The SNES version had to be written from scratch having 16-bit registers in mind, Doom for 286 would be …

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Re: BIOS needed for Octek VL-COMBO

Posted on 2021-12-18, 15:21

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by ViTi95

in Marvin \ Video

in Marvin \ Video

Tested the XTide ROM (386 8kb version) with the Promise controller, it went from 5.5 Mb/s using the DOS driver to 6.6 Mb/s without the driver. Not bad, I guess the CF is on the limit of it's performance.

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Re: BIOS needed for Octek VL-COMBO

Posted on 2021-12-17, 07:54

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by ViTi95

in Marvin \ Video

in Marvin \ Video

That is some impressive performance 😮. I'm waiting to receive some eeprom to test XTide. It is required to use the DOS driver with XTide? Or XTide enables all the good stuff?

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Re: Fun thread: Things you thought you knew but were soooo wrong..

Posted on 2021-12-15, 11:48

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by ViTi95

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Back in the past I thought that BIOS upgrades were safe...

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Re: Evergreen 486 SuperChip - settings for DIP switch?

Posted on 2021-12-15, 11:44

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by ViTi95

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I'm pretty sure the 16-bit data bus is the major bottleneck here. This is what I found in my testings developing FastDoom, it requires lot's of RAM bandwidth (the textures and sprites are really big, that's why having L2 cache helps a lot). A 386DX is at least 50% faster compared to a 386SX in this …

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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 2021-12-15, 07:53

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by ViTi95

in Release Announcements

in Release Announcements

... Mind if I put everything required to make cross-builds work into the same pull request? ... Yeah, cross-building support is great so feel free to add it in the pull request ... So bottom line is, seems NASM may not be a good choice after all if you want to guarantee the project can be built …

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