memswitch —
get or set x68k memory switch
  
    | memswitch | [ -h] [-n]
      variable ... | 
  
    | memswitch | -wvariable=value ... | 
The memswitch command gets or sets the x68k memory
  switch stored in the non-volatile static ram.
The first form shows the current values of all the variables of
    the memory switch.
The second form shows the current values of the specified
    variables. If the -h flag is specified, a brief
    descriptions of the variables are displayed. The -n
    flag suppresses printing of the variable name.
The third form sets or modifies the specified variables to the
    given value.
In the fourth and fifth form, the whole memory switch part of
    non-volatile SRAM is saved to, or restored from the specified file,
    respectively.
  - /dev/sram
- non-volatile static memory control device
Thememswitch command first appeared in
  NetBSD 1.5.