NetBSD/arm26 experimental snapshot, 2000-04-07.

This directory contains a kernel and bootloader for NetBSD/arm26 as of
2000-04-07.  They are by no means fully functional, but the system gets up
as far as running user processes.  To use it:

gunzip netbsd.gz, since BBBB can't handle gzipped kernels.

Put netbsd and BBBB on a filesystem accessible to RISC OS (preferably
local).

*SetType BBBB BASIC

Reboot RISC OS, holding down keypad-* (and shift if you have Boot
configured) to get a Supervisor prompt.

Change to a 256-colour screen mode (eg *echo <22><15>).  The rasops drivers
are currently broken at any other depth, and anyway this kernel only has
8-bit support compiled in.

Run "*bbbb".  The RAM disk (md0) contains an init which will enter an
infinite loop spawning and reaping processes which do nothing.  Ctrl-Alt-Esc
will get you DDB.  Root on et (Ether1) devices might work, but I doubt it.

Supported hardware:

ARM2, ARM250, ARM3 CPU.
4Mb -- 8Mb RAM.
Arc keyboard, mouse, RTC.
On-board video, but no mode changing and only 8-bit mode.
Maybe Ether1.
Maybe D.T. Software IDE.
Bugger-all else.


Oh, and dmesg is a small BBC BASIC program to pull out the kernel message
buffer after a reboot (preferably before starting the desktop) and save
it in dmesg/out.