IBM Releases MWave Winmodem Driver Under GPLFeb 13, 2001, 17:36 (9 Talkback[s])
(Other stories by Scott Courtney)
By Scott Courtney, LinuxToday
Many of the IBM ThinkPad 600E, 600, and 770 versions contain an MWave DSP (Digital Signal Processor) chipset which, among other things, emulates a Winmodem. IBM has provided a closed-source driver for this device previously, but the new version is released under GPL version 2.
The modem driver consists of a kernel module and a userspace application. Together, the two components emulate the Linux-standard serial port device (ttyS*) and a Hayes-compatible modem supporting the "AT" command set.
Previous versions of the driver, released under closed source licenses, remain closed source. The new, open source version supports kernels from 2.2.16 onward, according to the source documentation.