Stephen Tell <tell_at_cs.unc.edu> at the Linux-Laptop list: "The MWave chip on your 390 (and my thinkpad 600) isn't really a winmodem in the worst sense of the word - it is a programmable DSP chip, so the the Pentium CPU doesn't have to do all of the signal processing work as I understand it does some "winmodems" that are simply analog-to-digital converters with telephone jacks on back. See the petition for IBM support of MWave on Linux , the kernel source ../linux/Documentation/sound/mwave (after April 1999) and the modem section of TP600. Also IBM Mwave ACP LinModem Support (Binary).
Back to Survey of Internal Modems in Laptops.