| BWTWO(4) | Device Drivers Manual (sun2) | BWTWO(4) | 
bwtwo —
bwtwo0 at obmem0 addr 0x700000
bwtwo0 at obio addr 0x0
bwtwo is a memory based black and white frame
  buffer. It supports the minimal ioctl's needed to run
  X.
| June 10, 2016 | NetBSD 10.1 |