Texas Instruments 990 Operation Manual page 85

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945255-9701
Parameters:
format index
char string
Trace format index number; a number
from 0 to 3.
Character string describing the options
to be printed. The string contains from
1 to 27 characters.
Parameter default values: There are no default values. Both parameters are required.
Character string symbols: The character string symbol definitions and the associated trace
printouts are as follows:
Character Trace Output
P XXXX
I F-rnI
M
ST=XXXX
w
WP=XXXX
T BT=XXXX
C C=XXXX
N
(null)
x
X-XXXX
S
E SE=XXXX
B SB=XXXX
A SA=XXXX
R SR=XXXX
Description
Program counter. The program counter is printed for every instruction exe-
cuted. The program counter value is printed if anything else is printed even if
"P" was not specified (example 1).
Instruction and format. (Instruction formats are described in the Model 990
Computer TMS9900 Microprocessor Assembly Language Programmer's Guide,
Manual No. 943441-9701.) The instruction and its format are printed for each
instruction executed (example
2).
Status mask. The contents of the status mask which is placed in the user sta-
tus register is printed after each instruction executed (example
2).
Workspace pointer changes. When the user's workspace changes, the new
workspace is printed.
Targets for branch or jump instruction. Whenever a branch or jump occurs,
the target address of the branch/jump is printed.
CRU address. When one of the instructions that references the CRU
(LDeR.
STCR, TB, SBO, SBZ) is executed, the address of the first bit referenced is
printed. For example, for TB 2, the address is base (=R12)
+
2.
Null trace. No printout occurs. If any other characters occur in the string. the
null trace is overridden.
XOP level. When an XOP instruction is executed, the XOP level is printed.
Source. Refers to the source register. It is followed by an E, B, A or R.
Source effective address. This address is the memory location that the source
field addresses. It is printed for every instruction (example 2) that
has a
source operand.
Contents of source effective address before execution. The contents of the
source effective address before execution are printed for every instruction
(example 2) with a source operand.
Contents of source effective address after execution. The contents of the
source effective address are printed after each instruction with a source
operand is executed (example 2).
Contents of source workspace register after execution for Ts
=
3 (indirect
addressing with autoincrement). (Ts is the source addressing mode field in an
assembly language machine instruction.) The contents of the source register
is printed
if
an autoincrement is specified.
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