Holtek HT-IDE, User Manual

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Stack
This command displays the contents of the stack buffer. (Fig 6-4) The
maximum stack level of the
µ
C for the current project is displayed on this
window (in Fig 6-4, the maximum stack level of HT48100 is 2). The
growth of the stack is numbered from 0. The number is increased by 1 for
push operations, i.e. for CALL instructions or interrupts, and decreased
by 1 for pop operations, ie. RET or RETI instructions. The top stack line
is highlighted. In Fig 6-4, the first line marked with 00: is the top stack
line. After executing a RET or RETI instruction, the return address in the
top stack will be popped, and the line above is highlighted as the new top
stack line. If there is no line above the popped line, then no line will be
highlighted. The format of each stack line is:
stack_level: program_counter source_file_name
(line_number)
where the stack_level is the level number of the stack, program_counter
is the hex return address of the calling procedure or the program address
of the interrupted instruction, source_file_name is the complete name of
the source file containing the calling or interrupted instruction, and
line_number is the decimal line number of the instruction after the call
instruction or interrupted instruction in the source file.
Fig 6-4
HT-IDE User’s Guide
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