README revision 1.2
1 1.2 cgd $NetBSD: README,v 1.2 1994/10/26 09:08:31 cgd Exp $ 2 1.1 glass 3 1.1 glass NetBSD/sun3 supports the following busses: 4 1.1 glass 5 1.1 glass Bus: 6 1.1 glass obio - Devices on the motherboard, accessed by having their "registers" 7 1.1 glass mapped into the kernel's virtual address space 8 1.1 glass obctl - Devices on the motherboard accessible only via the 'CONTROL' space, 9 1.1 glass and supporting instructions on the m68k. 10 1.1 glass obmem - Devices on the motherboard that are mapped into main memory 11 1.1 glass by the hardware. Only true of some framebuffers. 12 1.1 glass mainbus - An imaginary bus on which obio, obctl, obmem, and the prom device 13 1.1 glass all reside. 14 1.1 glass 15 1.1 glass Devices supported: 16 1.1 glass 17 1.1 glass 'obio' Bus: 18 1.1 glass Device Type Description 19 1.1 glass --------------------------------------------------------------------------- 20 1.1 glass zs CHAR zilog 8530 serial ports; used for serial ports, keybd, mouse 21 1.1 glass le IFNET lance ethernet driver 22 1.1 glass 23 1.1 glass 'obctl' Bus: 24 1.1 glass Device Type Description 25 1.1 glass --------------------------------------------------------------------------- 26 1.1 glass idprom CHAR makes idprom contents accessible in user-space 27 1.1 glass 28 1.1 glass 29 1.1 glass The 'prom' device is just wierd as it isn't a real device, but enough 30 1.1 glass wrapping so that the prom input/output routines can be used to make 31 1.1 glass the prom's idea of the console both a tty, and a console in the netbsd 32 1.1 glass sense. 33 1.1 glass 34 1.1 glass prom CHAR prom-based tty and console support 35 1.1 glass 36
Indexes created Mon Sep 14 00:24:24 UTC 2026