Inspect Registers (Ir) - Texas Instruments 990 Operation Manual

r~
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
~
945255-9701
Error message:
DPOO
An invalid hexadecimal number was input, or the
number input was greater than FFFF
16.
Application notes.' Modification of the Workspace Pointer (WP) register causes the registers that
would be displayed by the Inspect Workspace Registers (IW) command to change. The Modify
Registers command is used to establish the initial environment for a program executed with the
Execute User Program Directly (EX) or the Execute User Program under SIE or Trace (RU)
command.
Examples:
.MR
PC=2000 244
WP=OOOO A6
ST=OOOO
.MR
PC=0244
WP=OOA6 A2
ST=OOOO 2-
.MR
PC=0244 246
The first example changes the value in the PC register to 244
16
and the value in the WP register
to A6
16 .
The second example changes the WP register value to A2
16
and the ST register value
to 2
16 ,
The third example changes the PC register value to 246
16 ,
As in the second example, the user may press the space bar on the terminal keyboard if he does
not wish to modify a particular register. As in the third example, he may press the RETURN
key on the terminal keybo,ard after entering a new PC register value to terminate the command.
3.4.15 INSPECT REGISTERS OR). The Inspect Registers command displays the contents of
the user's registers- the program counter (PC), workspace pointer (WP), and status (ST)
registers for the current user program.
Syntax definition:
IR
The command is terminated by a carriage return.
Application note: The displayed register values are those values which are loaded into the
processor in response to an EX or RU command.
3-35
Digital Systems Division