Tektronix Socket 7 TMS109A, Instruction Manual

Page: 56 / 113

Acquiring and Viewing Disassembled Data
2–10
TMS 109A Socket 7 Microprocessor Support
The default display format shows the Address, Data, Data_Lo, and Control
channel groups for each sample of acquired data. The Data and Data_Lo groups
are shown in one column.
The disassembler displays special characters and strings in the instruction
mnemonics to indicate significant events. Table 2–2 shows these special
characters and strings, and gives a definition of what they represent.
Table 2–2: Meaning of special characters in the display
Character or string displayed Meaning
#
The pound sign is used to indicate an immediate value. This
is somewhat dependent upon the target microprocessor
assembler notation.
> There is insufficient room on the screen to show all available
data.
&
The instruction was manually marked as a program fetch.
»
This instruction fetch cycle has been manually marked by the
user (TLA 700).
t This indicates the given number is in decimal. Example: #12t
(for 0xC in hexadecimal)
****
Indicates there is insufficient data available for complete
disassembly of the instruction; the number of asterisks
indicates the width of the data that is unavailable. Each two
asterisks represent one byte.
*
A single asterisk at the beginning of the instruction implies
the cycle is an out–of–order fetch. It is located in the first
character to the left of the mnemonic.
c
A lower–case “c” is used to indicate a cache invalidation
cycle. It is located in the second character to the left of the
mnemonic.
– A dash “–” is used to indicated that this cycle was issued by
the “other” microprocessor, (Primary, or Dual, based on user
selection).
( FLUSH ) The instruction has been flushed from the microprocessor’s
internal instruction queue.
(16) or (32)
Indicates that the fetch is from a 16- or 32-bit code segment
size, and disassembled accordingly. If the mnemonic fills the
entire column width, the (16) or (32) will not be displayed.
SMM
Indicates a System management mode cycle.
(MMX)
Indicates an MMX instruction; appears at the end of the
mnemonic.
(3DNow!)
Indicates an 3DNow! instruction; appears at the end of the
mnemonic.