Re: Boxedwine (Wine on multiple platforms)

Posted on 2020-11-27, 19:30

by

by jmarsh

in PC Emulation

in PC Emulation

FWIW, early 2000s/win98 era safedisc protection is pretty easy to bypass assuming the .bin files contain full 2352 byte sectors. It uses a different read command to check for its "bad" sectors, so all you need to do is manually verify the requested sector's CRC and return a read error if it doesn't …

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Re: PowerPC Dynamic Recompiler (patch)

Posted on 2020-11-27, 02:59

by

by jmarsh

in DOSBox Development

in DOSBox Development

It's based on DOSBox SVN. There are other changes required to get a working wii build.

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Re: What game are you playing now?

Posted on 2020-11-26, 20:45

by

by jmarsh

in Milliways

in Milliways

Surprisingly, vpool tests a lot of basic CPU emulation edge cases. I saw balls do a lot of crazy stuff while testing the DOSBox x64 dynrec...

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Re: What game are you playing now?

Posted on 2020-11-25, 22:43

by

by jmarsh

in Milliways

in Milliways

GL_NEAREST_MIPMAP_NEAREST makes everything nearest neighbor filtered, that includes the mipmaps being drawn in place of full sized textures when you stand far away. I know this. But OpenGL allows different filtering options for magnification vs. minification. GL_NEAREST_MIPMAP_NEAREST is only a …

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Re: What game are you playing now?

Posted on 2020-11-25, 20:58

by

by jmarsh

in Milliways

in Milliways

Does it use the same setting for both enlarging and reducing? I always prefer playing old games with nearest filtering for enlarging, linear for reducing.

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Re: hdd replacment - sd card, cf card or scsi

Posted on 2020-11-25, 20:47

by

by jmarsh

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Given SIV is a Windows utility it should and does use the Windows header files. It should be obvious these are what should be checked rather than none Microsoft Windows header files. Further whenever I make an error in a post I correct it and feel others should do the same. Then maybe you should …

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Re: hdd replacment - sd card, cf card or scsi

Posted on 2020-11-25, 11:09

by

by jmarsh

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

No, 0x0E is PARTITION_XINT13_EXTENDED which SIV reports as "Xint13 Extended". Partition Definitions from winioctl.h #define PARTITION_XINT13 0x0E // Win95 partition using extended int13 services Given Win95 originally didn't support FAT32 (and the fact that FAT32 has its own types), it should be …

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Re: hdd replacment - sd card, cf card or scsi

Posted on 2020-11-25, 07:58

by

by jmarsh

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

There must be some slight difference between different partitioning/formatting tools that the FC1307A either likes or does not like . Offset from beginning of disk may be one of them or not . FAT16 has several possible partition table IDs: 04: FAT16, < 32MB 06: FAT16, >= 32MB 0E: FAT16, >= 32MB, …

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Re: Hero's Quest/Quest for Glory I: keep dying in the graveyard.

Posted on 2020-11-25, 07:33

by

by jmarsh

in DOSBox Games/Apps

in DOSBox Games/Apps

Capture video with DOSBox, open in virtualdub, export to animated GIF...

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Re: SD Card to IDE Adaptor issues with FIC Slot 1 motherboard.

Posted on 2020-11-24, 08:58

by

by jmarsh

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Partition and format it on the machine you intend using it with, via the adapter. Make sure the first partition is FAT32.

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Re: How to retrieve the content of an old backup made of 4 rar files

Posted on 2020-11-24, 08:35

by

by jmarsh

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

patrmich wrote on 2020-11-24, 08:17: On such recent computer, I cannot use Winrar as the trial period has expired. Is this a troll post?

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Re: SD Card to IDE Adaptor issues with FIC Slot 1 motherboard.

Posted on 2020-11-24, 07:11

by

by jmarsh

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The FC-1307 adapters are notorious for acting like this. They rely on detecting a specific type of FAT32 or NTFS partition as the first on the disk to initialize their emulated C/H/S values, or else they won't work correctly until sector 0 is rewritten.

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Re: Blues Brothers character select *VERY* slow in DOSBOX *SOLVED*

Posted on 2020-11-24, 06:44

by

by jmarsh

in DOSBox Games/Apps

in DOSBox Games/Apps

Technically that's not correct though, STI doesn't enable interrupts on real hardware until the instruction after STI has executed. So there may be cases where STI is followed by LSS or similar which can malfunction if interrupts are immediately serviced.

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Re: Blues Brothers character select *VERY* slow in DOSBOX *SOLVED*

Posted on 2020-11-24, 00:44

by

by jmarsh

in DOSBox Games/Apps

in DOSBox Games/Apps

Bumping this because I've come across a related issue. Some games exhibit major slow down while polling port 3da in a loop, when running under the dynrec core. Examples: - Pizza Worm fade-in/fade-outs - Keen 4 &5 at their story screens (with the scrolling text) - Descent credits screen - Fallout 1 …

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Re: Divide error ?....

Posted on 2020-11-21, 19:34

by

by jmarsh

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Jorpho wrote on 2020-11-21, 19:14: Were you going to say something about a "Divide error?..." Or did you write your thread subject incorrectly? He's a bot. Exception occurred during subject generation, obviously.

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Re: Name of CD-ROM drive

Posted on 2020-11-19, 05:24

by

by jmarsh

in DOSBox General

in DOSBox General

Copy code to clipboard 1 devHeader.SetName ("MSCD001 ");

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Re: iPad Windows Alternative ?

Posted on 2020-11-17, 14:02

by

by jmarsh

in Milliways

in Milliways

sf78 wrote on 2020-11-17, 12:09: The last one for me is the total lack of support for WebM. Apple, creators of mov/mp4, not willing to support a competing format created (/adopted/reappropriated) by Google? Who would have thought!

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Re: Bought these (retro) hardware today

Posted on 2020-11-16, 05:35

by

by jmarsh

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Fun fact: Alphas are the reason Windows insists (to this day) that memory mappings be aligned to 64KB boundaries instead of 4KB, natural page size of x86 (and nearly every other architecture) and thus infuriating every emulator developer working on systems that make use of a MMU.

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Re: Boot command

Posted on 2020-11-12, 12:45

by

by jmarsh

in DOSBox Development

in DOSBox Development

Was the disk an image file mounted with imgmount?

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Re: What if Intel made a new 64-bit 386 or 486. . .

Posted on 2020-11-12, 06:23

by

by jmarsh

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It allowes execution of clean 16-Bit code, just as the 286 Protected Mode did. No it doesn't. The byte register encodings for long mode are different from 16-bit/32-bit mode, some combinations of operations simply aren't possible. Even using compatibility mode, it is not valid to use small (16-bit) …

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