System Debug Reference Manual (32650-90888)

150 Chapter4
System Debug Command Specifications :-Exit
ENV
This variable contains the name of the tool that is being run. It is either
'dat' or 'debug'.
PROMPT STR (io) rw
Current user prompt. It is defined as a quoted string with the same syntax
and options as the WL command. The default prompt is:
'cmdnum " (" pin ") " mode progname " " filter "> "'
The variables in the prompt are evaluated each time the prompt is
displayed.
PSEUDOVIRTREAD BOOL (misc) r d
This variable is TRUE if the last virtual access came from a
pseudomapped file. Otherwise, the access came from virtual memory.
PSP U32 (nmreg) r d
Previous SP. This is not really a register; it is computed based on the
current SP and size of the current frame.
PSTMT BOOL (misc) rw *
When PSTMT is set, the NM disassembler interprets certain LDIL
instructions as statement numbers, as generated by some of the language
compilers. The default value is TRUE.
PSW U32 (nmreg) r dM
Processor status register (alias for IPSW and CR22). Refer to the IPSW
environment variable for a complete description of this variable.
PW LCPTR (win) r
The address (as a logical code address) where the (current) program
window is aimed.
PWO SPTR (win) r
The offset where the (current) program window is aimed.
PWS U32 (win) r
The SID (NM) or SEG (CM) where the (current) program window is aimed.
Q U16 (cmreg) r dm
This is the CM Q register. The value in this register is relative to the CM
DB register.
QUIET_MODIFY U16 (io) rw *
When this variable is FALSE (the default value), all modifications to
registers and memory cause the current value of the item to be displayed.
If the variable is set to TRUE, all modifications are performed quietly.
Quiet modifications are useful in macros and breakpoint command lists.
R0 U32 (nmreg) r d
NM register 0; the constant 0 (zero).