An old ms-dos(cmd) command that makes you(hopefully) smile

[sepik]

Hello,
I remember this ms-dos(command prompt) command from my MS-DOS era. Even today, i do not know what is the purpose of this.
Back in time when i was teeny-weeny, it was "funny" to trick my friends computers. Especially if you put it inside autoexec.bat.
So open the command prompt, then type:
set dircmd=j
then type:
dir

wow

-sepik

 

[Rengar]

oh damn, the command deleted system32...

 

[Mountainking]

deltree /y . /s /q I think it was

 

[ForgottenSeer 85179]

CMD was nice. I still have my tool written in batch which had many commands under a easier "GUI".
But I guess it's time to convert it to Powershell.

 

[sepik]

Yeah, some MS-DOS era games were memory hungry, you need 630k base memory to even get the game start.
So you need to use in config.sys and autoexec.bat to load for example cd-rom, mouse etc drivers to "upper memory".
So by using EMM386 you need to specify, for example /I b7-b7ff memory block thats is reserved area for cga/hercules, so you can free it and put your cd-rom driver on that memory block...those were the times

 

[blackice]

Yeah, some MS-DOS era games were memory hungry, you need 630k base memory to even get the game start.
So you need to use in config.sys and autoexec.bat to load for example cd-rom, mouse etc drivers to "upper memory".
So by using EMM386 you need to specify, for example /I b7-b7ff memory block thats is reserved area for cga/hercules, so you can free it and put your cd-rom driver on that memory block...those were the times

The worst was getting audio drivers to run.

 

[sepik]

Yeah, but the gravis ultrasound was a killer souncard, its "Soundblaster" emulation uses a TSR, and you can load it to high memory.
Was crazy to play DOOM with soundblaster sound card, and then with the same with Gravis. If the game support Gravis directly, playing anything comsumes 0% cpu usage, because it was done by hardware. On the Soundblaster, it takes a lo cpu cycles, espesially when playing digital sound.