Re: Getting the most memory out of a 286: which memory manager?

Posted on 2020-01-24, 03:30

by

by kjliew

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

...the vast overwhelming majority of ISA EMS/XMS cards do not support mapping physical memory into the UMA They don't, but the 64KB EMS Page Frame itself is memory, which can provide 64KB of UMB as long as there no one else is using true EMS then. I don't think it is possible for QRAM or any 286 …

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Re: Problematic Windows games list

Posted on 2020-01-23, 06:22

by

by kjliew

in Windows

in Windows

I am all for early Windows games to be played on emulation such as DOSBox and QEMU. Both emulators can achieve equivalent CPU performance of Pentium 2/3 300MHz with today's state-of-the-art CPU/GPU configuration. QEMU KVM/WHPX has the CPU performance equivalent of over 1GHz of Pentium 3. Some of the …

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DJGPP faulty keyboard handler

Posted on 2020-01-19, 03:17

by

by kjliew

in Marvin \ Software

in Marvin \ Software

I don't remember if I have shared this information somewhere. Since this place has folks interested in DJGPP DOS32 programming, let archive the info here. At some point in time when DJGPP improved its libc for being more POSIX compliant by adding programmable keys for SIGQUIT and SIGINT, it broke …

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Re: QEMU 3Dfx Glide Pass-Through (WHPX/KVM works!!!)

Posted on 2020-01-18, 03:12

by

by kjliew

in Release Announcements

in Release Announcements

The latest QEMU 4.2.0 has an updated audio engine with new APIs. All the existing audio backends have to be ported for the new audio APIs. The only common backend between Windows and Linux is SDL audio, but it only works for SDL1.2 and has been broken for SDL2 due to the preference of float32 audio …

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Re: Best video card/cpu combo to play Blood (1997) in 800x600

Posted on 2020-01-16, 17:57

by

by kjliew

in Marvin \ Video

in Marvin \ Video

QEMU 3Dfx can run Blood 3Dfx 800x600 at 80+FPS on any cheap Intel laptops from the past 5 years. Even if you dislike 3Dfx mode, the VESA software rendering has no problem at 60FPS in with accelerated QEMU even at 1024x768.

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Re: QDOS 3Dfx port: music volume and video resolutions

Posted on 2020-01-10, 05:29

by

by kjliew

in Marvin \ Software

in Marvin \ Software

@kjliew, I understand 640x480 is the max on my Voodoo1. I was not trying to increase to 800x600, I was trying to lower it to 320x200. Any time I set -width 320 my game screen was 320x480; and if I set -height 200 it seemed to be ignored. I was able to run QDOS 3Dfx at 320x200 in QEMU. It is using …

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Re: QDOS 3Dfx port: music volume and video resolutions

Posted on 2020-01-09, 03:34

by

by kjliew

in Marvin \ Software

in Marvin \ Software

Now I don't need to drop to 320, but it still doesn't answer the question why 3Dfx mode is stuck at 640x480 (or at least 480 height). You mentioned you have a Maxi Gamer Voodoo1, 640x480 is the max resolution for Voodoo1. 800x600 can only be achievable if the game does not use z-buffer, but QDOS …

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Re: Large HD images (DOSBOX)

Posted on 2019-12-24, 00:01

by

by kjliew

in DOSBox Patches

in DOSBox Patches

The other patches at: https://www.vogons.org/viewtopic.php?f=41&t=34642#p674876 are also currently broken I just updated the rebased patch. It should work with current SVN tip. Is the 64 bits offsets for fseek() required for dosbox to mount (> 2gb, 8gb or less) raw FAT32 images that windows95 will …

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Re: MechWarrior 2: Titanium on Windows 10 (with MechVM) does not work?

Posted on 2019-12-14, 19:08

by

by kjliew

in Windows

in Windows

Emulation can now handle this game pretty well through Win98SE guest environment (DOSBox, QEMU, PCem). This saves the hurdle of hunting down unofficial patches and allow the game to be played on anywhere Windows 10/Linux. The emulation also has the option to run the game at absurd speed 😁

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Re: 3DFX Voodoo Banshee on DOS can't work

Posted on 2019-12-02, 22:08

by

by kjliew

in Marvin \ Video

in Marvin \ Video

EDIT: It seems you must copy the glide2x.ovl file to the games directory which is the same as what is in your Windows directory. Version 1.03-DX6 of the Voodoo3 driver seems to work fine with the Voodoo Rush patch. You could also check out other's suggestion. Extract the GLIDE2X.OVL from the exact …

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Re: 3DFX Voodoo Banshee on DOS can't work

Posted on 2019-12-02, 20:59

by

by kjliew

in Marvin \ Video

in Marvin \ Video

If you really have to have pure DOS, then I am afraid that your choice of Voodoo Banshee isn't all that great for compatibility. Voodoo1 is the best and guaranteed compatibility. Voodoo Rush and Voodoo2 come next. Banshee/V3+ onwards are problematic. Searching around, there were past discussion …

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Re: 3DFX Voodoo Banshee on DOS can't work

Posted on 2019-12-01, 18:35

by

by kjliew

in Marvin \ Video

in Marvin \ Video

I want to run games on DOS, no dos mode or dos box or emulation. Win98SE DOS box != DOSBox != emulation. Some late DOS games actually run better this way (eg. PYL, Nascar Racing 2 etc.), with the benefits of 32-bit protected mode drivers for CD-ROM and mouse. And the VxD drivers provide seamless …

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Re: 3DFX Voodoo Banshee on DOS can't work

Posted on 2019-12-01, 00:32

by

by kjliew

in Marvin \ Video

in Marvin \ Video

There were past threads discussing different versions of GLIDE2X.OVL that the recent versions, even for Voodoo1/Voodoo2, did not work under real DOS, but they worked under Win98 DOS box. It applied for the latest 3Dfx Win9x driver for Vooodoo1 3.01 and Diamond Monster3D version 4.10.01.1600. …

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Re: UMBARIES.SYS, UMB driver for i420EX chipset

Posted on 2019-11-28, 05:25

by

by kjliew

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Everything should have been managed by HIRAM, I just add code to enable UMB in the chipset. For my case, it's i910/915GM on ASUS EeePC. My enabled UMB range is D000-E3FF which turns out to be 81,936 reported by DOS MEM, too. I think HIRAM plays some tricks with INT2Fh and uninstalls itself when …

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Re: VIA AC'97 Sound Blaster drivers for MS-DOS?

Posted on 2019-11-27, 23:20

by

by kjliew

in Marvin \ Sound

in Marvin \ Sound

Alright, look like Sigmatel C-Major AC97 WDM driver also include SBEMUL and SWMIDI in the INF. And, it also setup BLASTER=A220 I5 D1 T4 P330 in Win98SE DOS box. I was able to get PCM/wave working for games, so that was sound effects through SBPro emulation. However, I couldn't get game music working …

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Re: DOS 6 22 vs DOS 7.1

Posted on 2019-11-27, 20:51

by

by kjliew

in Marvin \ Software

in Marvin \ Software

In my opinion, Win98SE DOS (aka DOS 7.1) is a better DOS overall because it supports more DOS internal components in UMB out-of-the-box. DOSMAX is a hack, by the way. However, FAT32 is the most critical feature for most to reducing disk slack space. Even if you don't use partition over 2GB, the …

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Re: How to Enable EMM on Win98?

Posted on 2019-11-27, 20:32

by

by kjliew

in Marvin \ Software

in Marvin \ Software

If your DOS games work under Win98SE DOS box, then you can have EMS support without EMM386 driver in Win98SE DOS box by adding the following line to [386Enh] section of SYSTEM.INI. NoEMMDriver=OFF Hence, you don't need to worry about finding free UMA for EMS page frame, and you get the benefits of …

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Re: UMBARIES.SYS, UMB driver for i420EX chipset

Posted on 2019-11-27, 19:18

by

by kjliew

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The main issue is that LOADHIGH / LH command fails in MS-DOS 7.x, things just freeze. In MS-DOS 6.22 and FreeDOS everything works perfectly. DEVICEHIGH in CONFIG.SYS works perfectly also. I'm not sure what produces that problem. I could replicate with HIRAM also which can act as UMB provider when …

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Re: VIA AC'97 Sound Blaster drivers for MS-DOS?

Posted on 2019-11-27, 04:53

by

by kjliew

in Marvin \ Sound

in Marvin \ Sound

So the 9x/ME SBPro and MIDI emulation was not sound card driver dependent. Yes, they wasn't, which in theory gives *free* SBPro compatibility for all AC97 solution within Windows DOS box, say Win98SE or WinME that supports WDM Audio. However, it was very strange that *NONE* of the AC97 vendor …

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Re: Bret Johnson's USBMOUSE - high loss of conventional memory

Posted on 2019-11-27, 04:33

by

by kjliew

in Marvin \ Software

in Marvin \ Software

There is no bios option to get USB mouse working in DOS. Are you sure? Usually, the USB legacy emulation for keyboard/mouse works as a whole, if the USB keyboard works, so does the mouse. You still need to load a standard DOS MOUSE driver (Microsoft/Logitech/CTMOUSE etc.), the BIOS emulates the USB …

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