OPENCP will run under Windows XP if you use the VDMSound SoundBlaster Emulation. This program will emulate a SoundBlaster in the CMD Box of Windows XP which is routed to your native soundcard, which can be of any type supported by WinXP.
After you have installed VDMSound you have to start a command line box (e.g. Start Run cmd), change to the folder where VDMSound was installed and run dosdrv. Then the SB emulation is set up for the current CMD box. Then you have to change into the OPENCP folder and can start OPENCP normally.
To use the graphic modes you have to disable the VESA extensions in the cp.ini file. Please set the uselfb option to no. You can also use our optimized WinXP cp.ini.
Note that version of VDMSound will crash if you try to use any of the graphic modes (oscillator, graphic spectrum analyzer, note dots etc.).