System information

Console Commands
A-14
VAX 4000 Model 108 User Information
>>> EX /INSTRUCTION /N:5 1000 ! List it.
P 00001000 D4 CLRL R0
P 00001002 D6 INCL R0
P 00001004 D1 CMPL S^#05,R0
P 00001007 12 BNEQ 00001002
P 00001009 11 BRB 00001009
P 0000100B 00 HALT
>>> DEP PR$_SCBB 200 ! Set up a user SCBB...
>>> DEP PC 1000 ! ...and the PC.
>>>
>>> N ! Single step...
P 00001002 D6 INCL R0 ! SPACEBAR
P 00001004 D1 CMPL S^#05,R0 ! SPACEBAR
P 00001007 12 BNEQ 00001002 ! SPACEBAR
P 00001002 D6 INCL R0 ! CR
>>> N 5 ! ...or multiple step the program.
P 00001004 D1 CMPL S^#05,R0
P 00001007 12 BNEQ 00001002
P 00001002 D6 INCL R0
P 00001004 D1 CMPL S^#05,R0
P 00001007 12 BNEQ 00001002
>>> N 7
P 00001002 D6 INCL R0
P 00001004 D1 CMPL S^#05,R0
P 00001007 12 BNEQ 00001002
P 00001002 D6 INCL R0
P 00001004 D1 CMPL S^#05,R0
P 00001007 12 BNEQ 00001002
P 00001009 11 BRB 00001009
>>> N
P 00001009 11 BRB 00001009
>>>