- Set the correct adapter address in RPB for Unibus devices.
- Repair the disk read routines for HP disks. ROM routines do not work
on HP disks, therefore use a small home-written routine.
- Use the RPB for passing boot device info up to kernel, instead of the
old BSD "hack" with an encoded longword (see sys/reboot.h for details)
- Instead of separate drivers for all devices, use the HW-provided ROM
routines as much as possible.
- Add filesystem support for CD9660 also (now when there is space).
- Make everything compile with WARNS=1.
The boot block is now <7K in size and have support for UFS, CD9660 and USTAR.