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On an Oracle VM VirtualBOX version 3.2.12 machine running under MS-Windows Vista Home Premium SP2, I tried out DEBUG of FreeDOS (printing a character on screen with DOS service 02h, and printing a string on screen with DOS service 09).

The output was in both cases very different from that of DEBUG of MS-DOS 6.00.

So for those who, like me, didn't yet now, be warned: FreeDOS is absolutely not 100% compatible with MS-DOS.

SBS wrote:On an Oracle VM VirtualBOX version 3.2.12 machine running under MS-Windows Vista Home Premium SP2, I tried out DEBUG of FreeDOS (printing a character on screen with DOS service 02h, and printing a string on screen with DOS service 09).

The output was in both cases very different from that of DEBUG of MS-DOS 6.00.

So for those who, like me, didn't yet now, be warned: FreeDOS is absolutely not 100% compatible with MS-DOS.

its actually quite incompatible in many cases. imo, FreeDOS is a joke. and it almost seems to have gotten worse over the years. i just use DR-DOS 7.03 when i need DOS.