$NetBSD: README,v 1.2 1994/10/26 09:08:31 cgd Exp $ NetBSD/sun3 supports the following busses: Bus: obio - Devices on the motherboard, accessed by having their "registers" mapped into the kernel's virtual address space obctl - Devices on the motherboard accessible only via the 'CONTROL' space, and supporting instructions on the m68k. obmem - Devices on the motherboard that are mapped into main memory by the hardware. Only true of some framebuffers. mainbus - An imaginary bus on which obio, obctl, obmem, and the prom device all reside. Devices supported: 'obio' Bus: Device Type Description --------------------------------------------------------------------------- zs CHAR zilog 8530 serial ports; used for serial ports, keybd, mouse le IFNET lance ethernet driver 'obctl' Bus: Device Type Description --------------------------------------------------------------------------- idprom CHAR makes idprom contents accessible in user-space The 'prom' device is just wierd as it isn't a real device, but enough wrapping so that the prom input/output routines can be used to make the prom's idea of the console both a tty, and a console in the netbsd sense. prom CHAR prom-based tty and console support