Leolo wrote: EDIT: It seems that you can also use that command on FAT32 drives. I haven't personally tested it, though. I don't think this works. The FAT32 file system requires the SFN entries to store the usual file info (starting cluster, file size, attributes, ...), not just the short name.

BTW, I can't use hxldr32.exe because the documentation says it doesn't work with DOSBox: HXLDR32 isn't compatible with DosBox. This is due to a bug in DosBox's emulation of DOS int 21h, ax=4B01h. Boot a floppy image with DOS inside DOSBox instead of using the Int21 emulation. Then at least HXLDR32 …

wd wrote: Use KEEN1 to KEEN9 Well, Keen 7 to Keen 9 got never released :-P

You could consider the so-called "OpenDOS" from Caldera as Shareware, though... 😁

DOS.

I want to repeat that: even more easy, close At least: Wouldn't closing DOSBox (possible with error message) be better than hanging?

Hi, although you possible don't care: Neither Interrupt 19h, nor Interrupt 18h nor jumping to the address 0xF000:0xFFF0 from within DOSBox does the trick to "reboot" (for DOSBox: just restart or, even more easy, close) the machine. Both Interrupt 19h and Interrupt 18h just return. For Interrupt 18h, …

But changing the output to display 02 should be possible. This is what I requested, yes. Nice!

Hello, The DOSBox shell's VER command displays both the major and minor DOS version as decimal number without leading zeros. This could cause confusion because the command "VER SET 6 2" doesn't set the version to 6.20 as one might expect but instead to 6.02. The problem here is that, using only "VER …

Hello, This code is found inside dos.cpp: case 0x37: /* Get/Set Switch char Get/Set Availdev thing */ switch (reg_al) { case 0: reg_al=0;reg_dl=0x2f;break; /* always return '/' like dos 5.0+ */ case 1: reg_al=0;break; case 2: reg_al=0;reg_dl=0x2f;break; case 3: reg_al=0;break; }; LOG(LOG_MISC,LOG_ …

Now I got it, thanks. Anyway, my debugger always shows data and code 😀

Doubt any game uses that. Why is that function called with 0xff anyways? Is that freedos specific? (drdos had something there iirc) It's actually the FreeDOS or DOS-C (the FreeDOS kernel) "Get ASCIIZ version string" service, not available for other DOS and a working installation check for FreeDOS. …

Hello, Testing some of my DOS software, I noticed one program that called the DOS-C/FreeDOS service Interrupt 21.33FF always hanging the Box. (Without "boot"ing some different OS into the Box.) Looking into the stderr.txt and the dos.cpp source file I now know that the Box terminates on unknown …

Which data is that? More important: Is it constant for most DOSBox versions? (Yeah, I could grab a few and test it myself, but if someone else already knows it...) And how many byte is this structure?

Type in "ver" for programs run in DosBox. What about someone running another COMMAND.COM inside DOSBox? It would return it's version on "ver", not the DOSBox version. get vesa mode information it contains some words about dosbox Indeed this helps, thanks. Using Interrupt 10.4F00, one can get DOSBox …

Hello, I'm a Assembler programmer writing some small DOS software (just for fun). I would like to know if there's any way to detect if I'm running in DOSBox. Recently I viewed the 0.72 source (I'm able to read and understand most C code) but didn't find anything like this yet. Best would be if the …