System Debug Reference Manual (32650-90888)

Appendix D 555
Reserved Variables/Functions
typeof func : str returns type of an expression
u16 func : u16 coerces an expression to U16 type
u32 func : u32 coerces an expression to U32 type
unwind env : u16 automatic unwinding enabled
user func : user coerces an expression to a USER LCPTR type
vainfo func : any information about a virtual object
vars env : u16 number of variables that can be defined
vars_limit env : u16 absolute sum limit of "vars" and "vars_loc"
vars_loc env : u16 number of local variables that can be defined
vars_table env : u16 current sum of "vars" and "vars_loc"
version env : str version ID for DAT/DEBUG
vtor func : u32 virtual to real
vtos func : lptr virtual to secondary storage address
vw env : lptr current virtual window address (lptr)
vwo env : sptr current virtual window address (offset part)
vws env : u32 current virtual window space
win_length env : u32 number of lines on display terminal
win_width env : u32 number of columns on display terminal
x env : u16 CM X register (Index Register)
zw env : u32 current real memory window address
Table D-1. Predefined Environment Variables and Functions
Name Type Description