20.4. Linux-on-the-mainframe device drivers
Earlier in the book, we mentioned the I/O subsystem and the fact that you can attach a variety of devices to Linux on the mainframe. This section details how the Linux I/O approach was accommodated on the mainframe as well as lists the various device drivers available. For more detailed descriptions of the device drivers, see the Device Drivers and Installation Commands book from IBM.
20.4.1. Common I/O layer
Linux was originally designed for the Intel-based PC architecture, which uses two cascaded programmable interrupt controllers (PIC) that allow a maximum of 15 different interrupt lines. All devices attached ...