PCPPI(4) | Kernel Interfaces Manual | PCPPI(4) |
When associated with an attimer(4) device, it is possible to change the pitch of the sounds emitted through pcppi.
The pcppi driver provides its child devices with the ability to output simple tones through the PC speaker. The speaker(4) and midi(4) devices use this to synthesize sounds. The isabeep(4) and sysbeep(4) devices are helpers which the pckbd(4) driver uses as a substitute for a “keyboard beep”, because the PC keyboard hardware doesn't provide this.
March 22, 2005 | NetBSD 6.1 |