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Re: DOS file size limit

Posted on 2022-05-15, 04:05

in DOS

in DOS

I've been confused by, and trying to solve this problem for years now. It seems the DOS 7.1 Kernel does not support 4GB-1 (long. unsigned files), but it will support both FAT32 partitions (max filesize 4GB -1) and also 64-kb cluster sizes on FAT16 partitions which means those partitions can also ( …

Re: my compact flash experience is a dud

Posted on 2022-05-11, 11:11

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Also possible would be DoubleSpace/DriveSpace. Sound like nonsense these days, I know. But it would take care of small files in a better way. Remember, each file on FAT takes up between 512B - 4KB, even if the content is merely a few Bytes. DriveSpace could improve performance at some point, also ( …

Re: Dosbox SVN r4019 + savestates Build (Alpha)

Posted on 2022-05-04, 20:51

in DOSBox Patches

in DOSBox Patches

It's probably a 32-bit build, install the 32-bit SDL libraries.

Re: Proper DOSBox resolutions to use on a 4K monitor

Posted on 2022-05-03, 11:49

in DOSBox General

in DOSBox General

openglpp restricts the output size to be an exact integer multiple of the input, with borders around the remaining output. If you don't want borders use a different mode.

Re: DOSBox ReelMagic Fork

Posted on 2022-04-21, 09:51

in DOSBox Development

in DOSBox Development

1) but there are still a couple of distorted lines at the bottom of the picture. Do you think they could be cleaned up? If the original hardware setup does not do this then yes probably it can be cleaned up. I'll look into this. To me that looks like very typical VHS head switching noise (from the …

Re: Wolfdale Pentium

Posted on 2022-04-13, 08:17

in Marvin \ System Specs

in Marvin \ System Specs

Be very careful that the CPU heatsink doesn't bend/warp the board when it's attached. For some reason those boards are especially susceptible.

Re: replacing Z Drive contents possible?

Posted on 2022-04-11, 06:08

in DOSBox Development

in DOSBox Development

They're internal commands because they modify the internal state of the command interpreter program. You can't expect a completely different COMMAND.COM to be able to change anything about the currently running shell.

Re: replacing Z Drive contents possible?

Posted on 2022-04-11, 02:23

in DOSBox Development

in DOSBox Development

You won't be able to change the prompt like that for DOSBox. It's running its own built-in version of COMMAND.COM (the DOS shell/command interpreter) and you're trying to use unsupported commands from MSDOS. If you want to run real MSDOS in DOSBox, set up a HDD image and install MSDOS on it.

Re: New Monkey Island game in the works

Posted on 2022-04-05, 13:29

in Milliways

in Milliways

At least some people remember MI3 was a thing... MI4 doesn't even get a mention. If a new Monkey Island game doesn't feature Murray, it's not a MI game as far as I'm concerned.

Re: DOSBox ReelMagic Fork

Posted on 2022-03-30, 04:14

in DOSBox Development

in DOSBox Development

DOSBox Pure (https://github.com/schellingb/dosbox-pure) is the most recent fork to implement savestates but it also has a lot of other modifications and is designed to run under retroarch. Trying to use it as a base would probably add several layers of unnecessary complexity.

Re: DosBox and CGA

Posted on 2022-03-17, 21:31

in DOSBox General

in DOSBox General

SVN is far more stable than 0.74-3.

Re: AT Keyboard connector inductor bad?

Posted on 2022-03-09, 03:33

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Would suggest making sure the resistance of the fuse is close to zero.

Re: AWEUTIL.COM divides by zero

Posted on 2022-03-09, 01:15

in Marvin \ Sound

in Marvin \ Sound

"Divide by zero" is interrupt 0. Often programs that end up here haven't actually triggered a division error, but accidentally perform an indirect jump to address 0 due to stack/memory corruption.

Re: CF card is detected but FDISK won't even run

Posted on 2022-03-09, 01:01

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Accessing the card using a CF reader uses different addressing (LBA) than what a 386 BIOS would use (C/H/S). Without knowing how the drive is configured in the BIOS, what the error message was or even which filesystem the card is formatted with (FAT16/FAT32), there's not a lot to go on here. DO NOT …

Re: What kind of VGA is that ?

Posted on 2022-03-07, 13:23

in Marvin \ Video

in Marvin \ Video

Pretty sure the same chipsets were used in Toshiba laptops back in the day. An external monitor connected to the VGA port had to be activated either with a special keypress or in the C&T windows software.

Re: Problem with file .bat when i try to send input from CMD to DOSBox.exe

Posted on 2022-03-06, 23:35

in DOSBox General

in DOSBox General

This is a very roundabout (and hacky) way of doing things (using an external program to send keypresses to the DOSBox application) when DOSBox already supports individual config files and startup commands. Not to mention batch files. A case where everything looks like a nail when you're holding a …

Re: Dosbox as self sustaining OS?

Posted on 2022-03-06, 23:29

in DOSBox General

in DOSBox General

Daniel3D wrote on 2022-03-06, 14:38: No. It can run XP just fine. But DOSbox is sluggish. That's why I try to cut away excess stuff. Then changing the OS won't matter. Most of DOSBox's time is spent emulating the CPU, with no calls to the OS.

Re: Dosbox as self sustaining OS?

Posted on 2022-03-06, 12:24

in DOSBox General

in DOSBox General

DOSBox doesn't just emulate DOS, it emulates an entire PC. If your machine can't run windows XP at a decent speed it won't be able to handle DOSBox, regardless of the OS you run it under.

Re: Illgal GRP4 Call 5

Posted on 2022-03-04, 04:12

in DOSBox General

in DOSBox General

Post the contents of the LEMM3D.cue file, and also tell which version/build of DOSBox you're using.

Re: DOSBox ReelMagic Fork

Posted on 2022-03-04, 04:04

in DOSBox Development

in DOSBox Development

Good to know thanks! The s-video thing adds to my thought on an OpenGL shader being able to help smooth out the video a bit. While using a shader is an option (especially with SVN trunk, which already supports rendering via shaders - the main reason I suggested looking into it), have you attempted …

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