Tektronix TMS 600 SAB-C167 80C167, Instruction Manual

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Acquiring and Viewing Disassembled Data
2–4
TMS 600 SAB-C167 80C167 Microcontroller Support Instruction Manual
Table 2–2: Meaning of special characters in the display
Character or string displayed Meaning
m The instruction was manually marked as a program fetch
**** 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.
# Indicates an immediate value
t Indicates the number shown is in decimal, such as #12t
In Hardware display format, the disassembler displays certain cycle type labels in
parentheses. Table 2–3 shows these cycle type labels and gives a definition of the
cycle they represent. Reads to interrupt and exception vectors will be labeled
with the vector name.
Table 2–3: Cycle type definitions
Cycle type Definition
Used to indicate that the write operation is being performed
Used to indicate that a high byte data write operation is
being performed
Used to indicate the RESET state of the microcontroller
The combination of control bits is unexpected and/or
unrecognized
Used to indicate a memory read
Used to indicate an instruction fetch that the microcontroller
did not use
Used to indicate that an operand is displayed as an
extension
Used to indicate that a low byte data write operation is being
used
Computed cycle types.
Hardware Display Format