| ZX(4) | Device Drivers Manual (sparc) | ZX(4) | 
zx —
zx* at sbus? slot ? offset ?
zx is a memory based color frame buffer, with
  graphics acceleration and overlay capabilities. Its control registers, colour
  lookup table and pixel memory can be mapped into a user process address space
  by using the mmap(2) system
  call. The zx driver supports the minimal ioctl's
  needed to run X(7).
| February 17, 2017 | NetBSD 10.0 |